![]() PC Exchange is an extension that allows mounting of DOS floppies, and Stuffit is the default archive tool for Macs. I had a floppy image laying around called "PC_Mac.img" which contains a HFS floppy with PC Exchange and Stuffit installed. Rosetta Floppyīoth the System 7 bootloader environment and the A/UX install lack MS-DOS floppy support, but it's fairly simple to add. You can use the A/UX startup settings to disable the startup fsck if you want, then it can autoboot, but I just leave it on manual boot. However, you can simply type "launch" and it will boot just fine, the issue is if the system ever crashes, see my note about keeping backups! Also note that you can launch directly into single user mode by running "launch -S". I currently haven't found any way to fix that issue, if you have suggestions let me know! I only found two references to this issue for A/UX, one was an ancient newsgroup post about installer issues, and one was in the 68kmla thread, both went unresolved. There's some documentation in the install and local admin docs. Note that the A/UX Startup shell is not a proper Unix shell, it just sort of pretends to be, you can't use any normal programs except the builtins, the only text editor is "ed", which is barely an editor at all. It seems it's unable to get an exclusive lock on the partition for A/UX for some reason. Running fsck on the actual SCSI node (/dev/dsk/c0d0s0) also failed in the same way. The error was: NO WRITE ACCESS to /dev/default. In A/UX Startup, the fsck command failed to execute properly, meaning the automatic boot failed. ![]() After that, the system would boot up to A/UX Startup, which is a small System 7 install only designed to run the A/UX startup. There I ran "Update" on both the SCSI drives, which seems to place a driver file in the first partition of each drive. Once booted I hot-inserted the SD card, and launched HD SC Utility. I fixed it by pulling the SD card on first boot (which means SCSI boot isn't possible), and booting off a System 7.5 Disk Tools floppy. I suspect this is because the disk image was made on a Quadra 950 and not something older. My IIfx gave a sad mac 21 error, which is documented in the GitHub but the proposed fix did nothing. Seems like a good place to add information Local System Administration & Installation Guide were very useful Has some debugging info as well, including getting ssh running Original thread where the scsi2sd image was made The following links are/were useful for me: URL Reflashing the SD card will almost certainly be faster than even a single fsck pass. With a 16 GB card it only takes around 5 minutes to dump an image, and it compresses fairly well. These are used for System 7.5 on the 2 GB drive, and a spare HFS partition + A/UX /users partition on the 4 GB drive.Īny useful information you find here: feel free to re-post or add to Wikis etc.Īn initial warning: old Unix systems are awful at handling filesystem errors - my advice is to pop the SD card out and image it periodically. The scsi2sd configuration in the GitHub worked fine, and I decided to make two extra drives at 2 GB and 4 GB since I used a 16 GB card. This procedure is identical to how you flash e.g. I don't have a modern Mac so I used Win32 Disk Imager to write the card, and it worked well, writing a 16 GB image takes around 20 minutes with a UHS-1 card. ![]() I decided to use A/UX 3.1.1 with the pre-made scsi2sd image, the image documentation is here: I had some issues, so I decided to document them and collect some links etc.Īpple A/UX was either an attempt build a high performance advanced upgrade to the companies existing System software, or a cash grab to get US government contracts which required Unix/POSIX compliant OSes on their computers. I dug out the old Mac IIfx from storage and had some fun getting A/UX running on it.
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