Using a SCSI2SD adapter to setup your 68k Macintosh

SCSI2SD adapter card
SCSI2SD adapter card

I recently purchased a SCSI2SD V.5 adaptor (3.5″ and 2.5″) to replace a failing 1980s SCSI HD, and realized once I had it set up I could “image” the Micro-SD card to make boot-able images anyone could use.

So, similar to my entry on setting up using a floppy disk, and setting up using an Iomega Zip Drive, I created boot images for System 6.0.8 and System 7.5.5 for setting up an SD card for use with SCSI2SD. Note, this is one of many, many options available to you for booting your classic Macintosh.

I’ve added an entry to my site with details of how I’ve set up a 32GB SD card for use in my Macintosh LC 475 with my Apple IIe card (4 ProDOS partitions)


  1. Your classic 68k Macintosh turns on, and is prompting you to insert a disk.  If your 68k Macintosh does not turn on, or does not show the insert disk icon, you may need to do some repair work before you proceed.
  2. You have a SCSI2SD adaptor, you MAY be able to use these images with a Compact Flash card of the correct size and a CF2SCSI adapter, if you can, let me know.
  3. Your classic 68k Macintosh supports an internal SCSI hard drive, and/or an external SCSI hard drive, although you will need to have an enclosure or an external adapter for your SCSI2SD adaptor so to use it externally.  Note, for Powerbook systems that only support 2.5″ SCSI drives, a Powerbook Edition of the SD2SCSI adaptor can be used to replace the internal drive.
  4. You have a SD or MicroSD card you plan to use with your SCSI2SD adaptor.

Quick Start

These steps are a summary of the information in the sections below

  1. Confirm your 68k Macintosh system has a SCSI port (most do)
  2. Download my 2GB System 6.0.8 or System 7.5.5 drive image (compressed to around 40Megs), remember not all 68k Macs support all system versions, System 7.5.5 is the most supported but requires 2MB ram minimum.
  3. Download my SCSI2SD v3/v4/v5.x config files, select the right one (1/2GB and plus/not plus), load it in the SCSI2SD setup software, and write to your SCSI2SD adapter (settings stored on the adapter, NOT your card), may work with v.6.x but I’m not sure (see section 3 for settings)
  4. Use balenaEtcher (Windows) or DD (linux/mac) to write my drive image file to an SD card
  5. Insert the SD card in to your SCSI2SD, connect to your Mac and boot, NOTE: for the Plus the SCSI2SD needs to be connected to a power source to work, USB power is the easiest.

1. Determine if you can use this method

This method will work for the majority of 68k Macintosh computers except: The 128K, 512K*, 512Ke*.  These three 68k systems do not support internal or external SCSI.  You will need to use one of the other setup methods I’ve previously identified, with the best option being buying and using Floppy-Emu to boot from 400KB SS SD floppy disk images. * There are some rare 3rd party upgrades that add a SCSI port to 512K systems.

This will work for the Macintosh Plus, but there is some extra work, see section 5 below.

2. Selecting your bootable drive image

I’ve created drive images (bit-by-bit copies including the boot drivers and partition table) containing the minimum versions* of System 6.0.8 and System 7.5.5, and several utilities and drivers.   I haven’t created any image files larger than 2GB, I’m assuming if you have a card larger than 2GB you plan to setup your SD card as multiple drives (see Section 3.2 below). That’s what I did for my LC 475.

You will need to:

  1. decided which System version you want to work with, I’ve created another entry that lists which System Versions are support by which 68k Macintosh Computers
  2. download the latest 1GB or 2GB drive image from my downloads page (~40MB compressed)
  3. upgrade the minimal System 6.0.8 and/or System 7.5.5. installations on my images to the full version, I can’t include the full versions on my images due to copywrites held by Apple. Note, you can skip this step, the minimal versions will boot, but if you do it now you won’t have to do it later.
  4. add any other applications/games you want to my image using the same method as what you used to get the full versions of System 6.0.8 and/or 7.5.5. on to the image.

Optional, if you don’t want to to use one of my images, you can create your own, or initialize your SCSI2SD in your Macintosh:

  1. You could create a drive image from an existing drive
  2. Create a image using SoftMac
  3. Create a image using MAME
  4. use some other method to boot, e.g. boot from a floppy, CD, etc. then initializing your SD card in your vintage Macintosh.

3. Configuring your SCSI2SD adapter

You will need to configure your SCSI2SD adapter based on the size of SD or microSD card you plan to use.  Since I do NOT have a SCSI2CF adapter I can’t provide any guidance for you, or know if you even have to do anything.

Remember to save the configuration to a file. It is NOT stored to your SD CARD, it is stored on the SCSI2SD adapter. If you switch between cards with different configurations you will need load the save config file, or manually enter the proper drive sizes for the card before using it, or the “drives” will get corrupted

  1. Format the SD card you plan to use, if you are using windows I suggest doing a full format vs. a quick format to make sure the card is wiped clean and has no errors.
  2. Download the correct setup software from CodeSRC, make sure you get the correct software based on your version of the adapter v3/v4/v5 vs. v6.   The software is available for Windows 32, Windows 64, Linux and Macintosh OS X.
  3. Run the setup software
  4. Insert the SD or microSD card in to your SCSI2SD adaptor
  5. Connect the USB cable from your computer to your SCSI2SD adaptor

3.1. Setting up Device 1 using my images

If you don’t want to manually set this up, you can download my SCSI2SD config files for my 1GB and 2GB images, the .zip file also includes the config files for the Macintosh Plus with the required extra settings (see section 5). To use download, unzip, and in the SCSI2SD-util choose file -> load -> and select the .xml file for the image you are using. The config file is set up everything for Device 1 with SCSI ID 0.

  1. Select device 1
  2. Set the sector size to 512
  3. Set the sector count size based on the size of the image file, e.g. my 2GB image file is 1,971,322,880, so the sector count is 1,971,322,880 / 512 = 3850240
  4. The device size should auto adjust, e.g. for the 2GB image file the size is 1.84 actual GB (a MB, GB etc. should be a multiple of 1024, but for marketing reasons storage uses a multiple of 1000)
  5. You should be able to leave the rest of the settings as the default unless you have a reason to change the values (see Figure 1)
  6. Select save to device
    • If you get the message “Save Failed” you’ve set the total sector size of your Device to be larger than what your card can hold.
  7. Once saving is complete disconnect the USB cable from the SCSI2SD adapter
  8. Eject the SD card from the SCSI2SD adapter go to section 4.

3.2. If you want to setup your SD card as multiple drives:

For this example I’m going to use a 16GB SD card (15,794,700,288 bytes) (see Figure 2), and my 2GB image file (1,971,322,880 bytes) for my SCSI device 0.

  1. Follow the steps from section 3.1 above to setup device 1 based on the size of the image file you selected as your SCSI device 0.
  2. Select Device 2 (Figure 3)
  3. Select Enable SCSI Target
  4. For SD card start sector, select Auto
  5. For this example, because I used 1,971,322,880 bytes for device 1, I now have 13,823,377,408 bytes left to work with, which is equal 26,998,784 sectors.
  6. Putting 26998784 sectors in to the sector count give me a Device 2 with a size of 12.874 GB (Figure 3).
  7. If I wanted Device 2 to be smaller I’d reduce the sector size, and use the remaining sectors in Device 3 (and optionally 4)
  8. I suggest that you leave about 50 to 100MB empty (100,000 to 200,000 sectors) un-allocated at the end of your SD card to prevent future issues if you want to backup and restore the contents of your SD card to a different SD card.  As I mentioned earlier the available space on these cards isn’t standard, and can vary by 50 to 100MB.
  9. Once you’ve finished setting up the Device tabs, press the Save to device button.
    • If you get the message “Save Failed” you’ve set the total sector size of your Device(s) to be larger than what your card can hold.
  10. Once saving is complete disconnect the USB cable from the SCSI2SD adapter
  11. Eject the SD card from the SCSI2SD adapter go to section 4.

4. Copying the image file to your SD, microSD or CF Card

Use balenaEtcher (Windows) or DD (linux/mac) to write my drive image file to an SD card. Once your done, insert the SD card in to your SCSI2SD adapter, connect the adapter to your classic Mac’s SCSI bus, and you’re ready to go. (see notes for Macintosh Plus below)

If you don’t know how to use DD, I’ve created a separate blog entry on how to use DD on Windows, Linux and modern Macs to both write images to an SD card and other media, and create images from the contents of an SD card or other media.

If you used option 3.2 above and created more than one “drive” on your SD card, you’ll need to initialize and partition the additional drive(s) once you’ve booted from the first drive on your 68k Macintosh. If you plan to use any System older than System 7.5.2 do not create partitions larger than 2GB.

5. Extra Steps for the Macintosh Plus

The Macintosh Plus doesn’t fully implement the SCSI standard, to get your SCSI2SD adapter to work you may need to provide extra power to the adapter through it’s USB port.

Also under the SCSI2SD card’s general settings:

  • Enable Unit Attention = OFF
  • SCSI Selection Delay = 0
  • Respond to short SCSI selection pulses = ON

Thanks to Huxley Dunsany for pointing out the settings, and James Thomson for confirming they worked on a 2nd system.

6. Another Option for setting up your SCSI2SD

Remember you could always start with one of my images set as SCSI 0, but once you have your SCSI 1 drive setup how you want, go back in to the SCSI2SD config software, and switch the SCSI IDs, so that my image becomes SCSI 1 (or later) and your newly created, partitioned drive becomes SCSI 0 (your boot drive).   This will let you create a SCSI 0 boot drive partitioned exactly how you want.

55 thoughts on “Using a SCSI2SD adapter to setup your 68k Macintosh

  1. Thank you very much! I can confirm that the instructions worked on macOS High Sierra and I was able to boot my Macintosh SE without a floppy. I should mention that dd took quite a while for me, around 3 hours.

  2. I’m getting an error from Chrome when I attempt to download these images: is dangerous, so Chrome has blocked it.

  3. Hi. This looks great, and I’m really looking forward to trying it out. Just our if curiosity, once this is set up, is there a way to write additional software to the SD card? There is lots of software one can download, but I’ve no way to write it to a floppy, so I’d love to be able to just write it directly to the SD card. Thanks!

  4. I have the 5.1 board, and am running into issues getting the Mac (SE HDFD) to recognize the SCSI device. Is there any tips/tricks needed to get this going beyond setting the size & ID for the devices? Which firmware version(s) have you been successful with?

  5. Another thing to do with the card: update the vendor/product/revision info so it masquerades as an Apple-original device (eg, the SEAGATE ST225N rev 1.0). The fields are case-and-position sensitive, so you can’t just drop in the names any old way (below, replace asterisk with a space):
    vendor: *SEAGATE
    product ID: **********ST225N
    revision: 1.0*

    With this config, the native Apple SC HD application will recognize the drives; you don’t have to use patched versions, etc., on those old machines that would otherwise ignore them.

    • Thanks for point this out, I’ve used the patched version of Apple SC HD for so long I didn’t even bother trying to spoof a compliant drive.
      Did you get this working with your Mac SE HDFD?

  6. Hi Steve – would this work with a color classic with an LC575 board? Would I be able to do an external install or would I be better off with an internal install for this configuration?


    • Hi CT, not sure, have you modded you CC to 640×480? If so it should see your CC as an LC575 and work. For internal vs. external that’s up to you, when I had it installed in my un-modded CC I was using it internally.

  7. Hey! Thanks for these guides, it was a great and complete set.
    I like your 2GB image and would like to use it as a ‘starting point’. It seems quite complete. Two questions:

    1) Is the RAM affected by the networking stuff on it or can that be further slimmed down?
    2) Assuming I want to have several drives, the first one being your image and the others being simply empty 2GB drives for storage. I have SCSI2SD v6 and a Mac Classic II. How can I achieve this?

    Thanks for your efforts!

    • Hi Daniel,
      1. the networking stuff isn’t enabled by default so there shouldn’t be an impact on your RAM. It’s on the image but would need to be installed.
      2. You can write one of my images to the first part of your SD card, then set up the remaining parts of the card as additional drives following the instructions in section 3.2 of this post.

  8. I wanted to start by first saying THANK YOU for these amazing guides and downloadable disk images – you’ve made it possible for me to get my Mac Plus running nicely with my new SCSI2SD, and I’m really grateful!

    I did want to suggest a small addition to your guide – there are some details specific to the Mac Plus which caused me *days* of headaches, thinking I was missing something or doing something wrong. According to Codesrc (in a page which weirdly never came up for me in Google searches on this topic): “The Mac Plus is troublesome as it’s bootrom code doesn’t follow the SCSI standards. The SCSI standards recommend a SCSI selection abort timeout of 250ms, but the Mac Plus bootroms quit before even 1ms has expired.”

    Make sure “Enable Unit Attention” is OFF
    Change SCSI Selection Delay to 0
    Enable “Respond to short SCSI selection pulses”

    Until a kind person on the 68kMLA forum pointed that out to me, I was going in circles to the point of almost giving up – the Mac Plus would “see” the SCSI2SD, but only when I would boot from a floppy, and even then it was unstable and any software I tried to run from the SD card would lock up almost immediately. Making the changes noted above resolved everything instantly.

    Anyway, thank you again, and I hope the info I’m sharing here helps someone else!

    • Hi Huxley,

      Could you go into more detail about how your SCSI2SD for the Macintosh Plus ?
      Which disk image did you use ? I have copied the 2 go system 6.08 image but the Mac Plus is not seeing the SCSI2SD at all. There is no orange led showing up on boot so the Mac Plus isn’t seeing it.
      Please tell me exactly what options you have checked and unchecked in the SCSI2SD setup utility. Thanks. James

  9. Hi,
    answering to Jim:
    “I have the 5.1 board, and am running into issues getting the Mac (SE HDFD) to recognize the SCSI device.”

    I was planning to buy one, and I’ve seen the Mac SE is supported only by the v.6 board.


    • Wait….what?? V5.1 doesn’t support the Mac SE? Is that why I’ve spent days trying to get this thing to work…and failing?

      • I read that the 5.1’s termination is now software-controlled (using scsi2sd-util), I’m assuming you enabled it? The only other thing I’d suggest (if you haven’t tried already) is treating your SE as a Mac Plus and try providing usb power to your SCSI2SD adapter. See step 5. Extra Steps for the Macintosh Plus.

      • Going through the same thing right now (trying to get a v5.5 external enclosure working on a Mac SE). Did you ever find a way to make this work?

  10. Hi Steve,

    Thank you for your reply. I have now managed to get the SCSI2SD card to work with my Macintosh Plus.
    I have a version 5 card which is smaller in physical size than the version 5.1 or version 6 cards. I have it plugged directly onto the DB-25 SCSI port on the rear of the Mac Plus using the internal IDC 50 pin to external DB-25 adapter designed by Michael McAllister. You also need to use a 25 pin male to male gender changer though so that you can plug it in directly into the rear of the Macintosh Plus. The problem I was having was that the SCSI2 SD card was not receiving any terminator power over the external SCSI bus so was not powering up at all. I then plugged it in via USB to power it up. I restarted the Macintosh Plus and it booted straight away ! Something to bear in mind is that the Macintosh Plus boots from ID 6 first so for the fastest boot time I would set the boot drive to ID6.
    Apparently there is a simple diode and resistor mod which can be done to the Mac Plus which will enable it to provide SCSI terminator power as standard. I have been trying to find out more details about this mod but am having trouble finding anything. If anyone is aware of or has the technical details to perform this mod please do share it with this thread. Thank you once again for providing the bootable disk images.

    • Turns out that the Mac Plus, Mac Portable, 100-series PowerBooks, 500-series PowerBooks, and the PowerBook 1400 don’t supply SCSI termination power. So I’m assuming if you are using a SCSI2SD adapter with any of these you’ll need to provide power through USB.

      For the mod I found:
      Simple 4.7ohm resistor, and a regular 4001 diode from the 5V rail to the termination pin of the DB25 connector.

  11. Hi Steve, followed your tutorial for creating disks for using with SCSI2SD. I have a 16GB card and since we were supposed to limit to 2GB I wondered how I could use the remaining 8GB, since the tool only let you setup 4.

    Then I realized we’re actually creating virtual disks, right? Meaning while it would be good for the first to be 2GB to match your image, the rest don’t necessarily have to and I could partition them later into 2GB partitions?

    I first tried to do the install myself from “floppies” (I have a Floppy Emu) but I was not successful, at some point it asks me for disk 1 again and just cancels the installation saying an error happened and my disk was left untouched… Maybe my install floppy images are bad at some point??

    I just tried your 2GB image, writing it to the card under Windows with the recommended tool (why is it still seen as 16GB though? Is it because the “virtual disk” information only exists on the SCSI2SD device and it just reads and writes to/from the appropriate places? Anyway, writing the 2GB image file, and my LC III booted up 7.5.5 just fine!

    Anything you could recommend to learn about the OS? I have never installed one of these in my life (or really used old macs in the past either).

    One thing I need to figure out which I don’t find on your image is the memory control panel to enable 32-bit addressing and that the OS stops using all my mem (I expanded the LCIII with 32MB for a total of 36MB)


    • Hi Walter, from your message it looks like you got to the point where you were able to boot. Congratulations.
      For your question about the memory control panel. I was only able to include a minimal version of 7.5.5 on my image (copywrite). But I do have another page on my site that explains how to update my images with the full version. See
      I updated this post to more clearly explain that the images can/should be updated before they are copied over.
      Yes, you are right about the virtual disks. Each of my images acts as a physical “disk” and using SCSI2SD each disk gets it’s own SCSI ID. You can set up the remaining space on your SD card using the SCSI2SD control panel however you wish up to a max of 3 other “drives”, each of those “drives” can be larger than 2GB. E.g. a 8GB drive that you partition in to 4 2GB partitions.
      For learning about the OS, I’m not sure, I first learned about using these back in the 90s, so I’ve never really looked for how to guides, I’ve been more focused on keeping a couple alive 🙂

  12. I struggled through setting up my first SCSI2SD Board ina IIsi. Once I figured out what I was doing and set it up successfully, I was able to do a second IIsi in about an hour. I am now trying to do a G3, and am having a bear of a time getting the G3 to recognize more than 4 GB of the second partition. I have a 512 GB SD card installed. Everything is configured correctly and at first it recognized both of my partitions, 1 @ 2 GB and the second @ 500 GB. I made the small partition for the OS (8.6) and Apps and left the other for everything else. Everything was going great until I tried to install Retrospect (Backup Software). Then the G3 crashed and upon restart told me my large partition was unreadable and asked to initialize it. I figured why not, there’s nothing on it? So I did. It at first wouldn’t do anything at all because “Disk First Aid can not make changes to an unsupported drive.” I have the patched version of Drive setup and Lido 7, so I eventually did get it reinitialized. But, even though Disk first aid “sees” 500 GB of free space, it will only allow me to have a 4GB partition. I can’t enlarge it. I am stuck. I don’t know what to do. I have OS 8.6 installed, so the 2 GB partition limit doesn’t apply. Any ideas?

    • Hi Victoria, I mainly play with old 68k macs. If you haven’t already, you might want to try posting on the 68kMLA forums for help…

      One thing I can suggest is do a full format/verify of the 512GB card to make sure there isn’t any defects. I’ve had issues before that turned out to be a bad card. I personally haven’t used a card of that size with a SCSI2SD, I don’t think there is an upper size limit, but I’d have to check.

  13. Hi,

    Wanted to thank you so much for this incredible resource that you have put online. Immensely helpful. I set up my SCSI2SD on my Mac SE/30 and I downloaded your 500MB 7.5.5 disk image and dd’d it on to an 8GB SD card and it booted up on the SE/30 like a dream! Flawless.
    However, I was wondering, I created a disk image (High Sierra sees it as a textedit document?) of the full version of 7.5.5 using basiliskII and it boots up without any problems in basiliskII.
    But when I try to DD this file to an SD card and put in the SCSI2SD in the SE/30 no dice.
    Likewise, if I try to boot your disk images in to basiliskII then it doesn’t boot up either.

    So I was wondering what is the difference between my disk image that I created in emulation with basiliskII and your disk images and why can the SE/30 only read one and basiliskII can only read the other?

    Would greatly appreciate any insight, I am by no means an IT expert, simply a hobbyist (SE/30 came out 5 years before I was born haha..)

  14. Hi Steve,

    Thank you for your invaluable documentation efforts!:)
    However, I’m struggling to make this work on my Quadra 700. After switching IDs (from the 1.9GB scsi2sd disk where I’ve copied your OS755 image and successfully booted from, to the 1.6GB disk I’ve initialized and partitioned using the patched HD SC Setup and to where I’ve installed OS 8.1).

    After switching IDs, making ID 0 the disk with the OS8.1. installation, I either get a “bus error” after the OS starts loading or it just hangs if I try to boot with extensions disabled.

    Any ideas? I have a very standard Quadra with 64MB of memory. No additional cards installed. 100% stable running OS 7.6.1 from its original IBM SCSI drive.

    Thank you in advance.

    • I actually haven’t tried installing anything later than 7.5.5 yet, I might be able to test in a week or so, I’m currently finishing up some entries relating to the MacPlus. I’ve had a few requests to create a pre-made System 8.1 and System 7.6.1 images, but I haven’t looked in to the legalities of doing so, I know I can have minimum versions of 6.x and 7.x because they were often include on bootable disks and CDs, but I don’t know if that is the case for the later Systems.
      For your SCSI2SD settings, based on your descriptionI’m assuming that you started with:
      Device 1 = SCSI 0 = my 7.5.5 image
      Device 2 = SCSI 1 = disk you initialized and installed OS 8.1 on.
      You then changed Device 1 to SCSI 1, and Changed Device 2 to SCSI 0.
      One thing you could try instead, switch back to the originally SCSI ids, and then you the utility I include called: System Picker. See if it lets you select the OS 8.1 system folder, if it does, you should be able to set it as the default system to start with.

    • You can also try using Basilisk to create your own OS8.1 image.
      You’ve already got my OS755 image.
      Make a copy of it.
      For Basilisk set the downloaded image as drive 1, and the copy as drive 2, make sure the enable “My Computer Icon is checked”
      Boot Basilisk, delete the System folder of the 2nd drive.
      Install OS 8.1 to that 2nd drive
      Exist Basilisk
      Write the updated copy to your SD card using DD or some other binary writer.
      Your device 1, SCSI 0 should now have a bootable 8.1 drive.
      This is similar to the process I describe here:

      • Hi.

        Thanks a lot for your answer. I did end up upgrading your OS755 image to OS81 in Basilisk. It worked like a charm!;) I still have a smaller 1.6GB SCSI 1 but won’t touch it for the time being.

        Next steps:
        – setup LAN using an m0437 (LEDs blink but DHCP or fixed IP don’t seem to work; router doesn’t even show a new MAC address; I had the same behaviour with OS7.6.1 but was hoping that OS8.1 would solve it).
        – setup Personal LaserWriter 300 (can’t find drivers for it; “” only has an empty folder for this printer)

        Challenges after challenges!:)


        • I’m currently working on a networking post for my ASANTE scsi2ethernet adapter.
          I’ve not had any luck with DHCP, I had to manually set the IP of my mac, manually set the gateway IP (usually your main router), and the DSN, I used google’s For my router it only dynamically assigns IP addresses from 100 to 255. So any fixed IP I use has to be below 100, so I use
          Even with when connected and working (I use FTP) I don’t see any of my connected Mac’s listed as one of the connected devices in my router. I’ve got networking working for my Plus, SE, LCIII, LC475 and Colour Classic, under 6.08 for the Plus and SE, and 7.5.5 for the rest.

  15. got it working with Performa 475. I was able to access 2 “drives” on the SDcard from the classic mac.
    Now I’d love to write files from my current Mac (Mojave) to those hard disk images on the SDcard.
    So I inserted the SDcard to Mac and at least one of the disk-images came up. I can read files but I can’t write files to it.
    Am I doing something wrong? Scared is not write protected. DO I need to go through the SCSI2SD utility?

  16. Hi Steve,
    Thanks again for your blog. Really enjoy the detail and the read. I’ve been trying to get a Mac Plus working with a SCSI2SD v5.5 – and am having no luck. I’ve tried multiple configurations, even making sure to get the right settings in the General and Device settings area. That includes: Enabling Termination (since I have a v5.5), Descreasing the Selection Delay to 0, Disabling Unit Attention, and turning on “Respond to Short Selection Pulses”. I’ve also tried using various combinations of Vendor and Device ID names – SEAGATE, ST250 – complete with the requisite spacing in names depending on the manufacturer and ID mandates it.

    I noticed that you’ve been using the Floppy EMU and SCSI2SD with your Mac Plus’es and are currently experimenting with your Assante device. I’m assuming you have managed to reliably get the SCSI2SD working on the Mac Plus. Could you share your General and Device settings that you got to work with it?

    I thought I read in one of the earlier comments, that the device likely won’t boot from anything but a physical floppy boot disk initially – but I’m hoping I’m mistaken – because all I have is a 6.03 boot disk with a version 2.0 of the Apple HD SC Setup.

    Would appreciate any insight into the settings that I might have missed, or advice.


  17. Thanks. Interestingly, I see in your settings that you elected to stay with the default Vendor and Product ID. I believe only the patched version of the Apple HD SC Setup tool would work with that. I noticed in the threads that some users had to try using a very specific Vendor and Product ID, E.g. – SEAGATE, or QUANTUM depending on the version of the Setup tool.

    At any rate, I tried quite a few different configurations, and could never get it to work. Someone pointed out the monitor tool up on the codesrc site which supposedly allows for a self test. On my boardthe SCSI option showed up as FAIL. McMaster (the creator of the SCSI2SD) suggested that the main utility would be better for diagnosis with the debug self-test – but never provided instructions on what to look for in the log – so I only have the monitor tool to rely on.

    I bought the SCSI2SD v.5.5 – so it connects directly to the DB25 port. I do have the device hooked up to an external micro USB power adapter supplying 5v.

    Alex over at Inertial Computing has said he’d send me out another replacement board, so I’ll have to wait and see if that clears up some of the problems I had before getting it to work. I’ll report back once that comes in.

    • Hi Vincent, hopefully you get it working, I use the patched version of Apple HD SC, so I’ve never bothered with trying to match my settings to an apple approved drive.

      • I got a replacement SCSI2SD from Inertial – and I did a test right away with the scsi2sd-monitor.exe – and it passed (compared to the original).

        I also got impatient and ordered a FloppyEmu from Steve Chamberlain – and I got that working a few days ago – so I used that to boot – and the Apple HD SC 7.3.5 patched version detected the new SCSI2SD right away (versus the bad board – hate to think how much time I wasted trying to get that to work). It hung on Initializing disk…verifying format – for quite a while. At least 5 minutes – but finally completed.

        I did eventually get the system with the SCSI2SD up and running, but oddly, never managed to get a copied image using your instructions to work. Not sure why. I had to initialize the SCSI2SD SD card by booting off the FloppyEmu HD20 image.

  18. I have the Macintosh SE (800k,20mb) M5011. The HDD is replaced with SCSI2SD V5.1 Adapter. Steve’s 6.0.8 image, config xml and BalenaEthcher with a Lexar 2GB SD worked and it booted into desktop.
    I just want to say that I ran into several issues with Sandisk , Kingston SD cards. For some reason there seem to be certain SD Brands that work with the 5.1 adapter and SE.
    Now I’m going to copy all software, games onto Steves image and update the SD to make the MAC ready for gaming, productivity and the vintage nostalgia.

    • Can you be more specific… I am sourcing a scsi2sd for a regular SE and have been hearing reports that only version 6 of the board supports the regular SE. Are you saying all of those people with issues more than likely had issues due to the sd card brand ?

  19. Hi

    I’m using the scsi2sd v5.0a, and and had set up all pero per the quick start, and using a 2GB SD, I used balenaetcher to flash the SD

    But when I try to boot, my Mac se 30 doesn’t boot

    Could you please advice what I’m doing wrong ?


    • Which image did you use the System 6.0.8 or System 7.5.5?
      Is the SCSI2SD attached internally or externally?
      If external, have you tried providing power to it via USB?
      Was your SE/30 working with a hard drive before?
      Is there a different card you can try? The sizing of SD cards isn’t standard so my 2GB image may not fit on you 2GB SD card, although I would have thought that balenaetcher would have thrown an error if that was the case.

      • Hi Steve

        My scsi2sd is internal, I used the 7.5.5 image on a 2GB Sd card

        I also tried on a 16gb SD and same issue 🙁
        I test the Mac with an old HD and it boot

    • That’s normal. My image files are HPS formatted, so Balenaetcher can’t understand what’s in the file, but it can still write it to the SD. You have scsi2sd v5.0a, have you updated it with the latest firmware? I know some people have had issues with the SE/30 for some reason, and various things have fixed the problem, e.g. updated firmware, using the Mac Plus settings, different SD card, providing power through USB etc.

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