68kMLA Classic Interface

This is a version of the 68kMLA forums for viewing on your favorite old mac. Visitors on modern platforms may prefer the main site.

Click here to select a new forum.
SCSI2SD 32gb SD
Posted by: just.in.time on 2019-01-05 15:29:52
Is it possible to use a 32GB microsd card in a 5.0b SCSI2SD and have it appear as one ~32GB drive under Mac OS 8.1 PPC?

i have a spare SD card left over from an rPi upgrade. Normally I just use 8gb sd cards and partition them into 2gb sections. But it would be nice to have one big disk if possible.

Posted by: netfreak on 2019-01-05 15:56:17
8.1 introduced HFS+ which doesn't have the 2GB limitation if I'm not mistaken. Only downside would be nothing below 8.1 can read it.

Posted by: Cory5412 on 2019-01-05 23:06:38
Plain HFS also doesn't always need to be partitioned to 2GB sections. The actual limit depends on specific OS-and-machine combinations.

Details are here: 






Posted by: just.in.time on 2019-01-06 11:32:13
Thanks @netfreak and @Cory5412. Based on that link I went ahead and formatted the MicroSD card using a USB adapter on a Beige G3 running 10.4.11 with the following settings:

1 HFS (Mac OS) Extended Partition

-entire disk allocated to said partition (~32gb)

-Apple Partition Map radio button under Options...

”Install MAC OS 9 Disk Drivers” checked as well

Also used scsi2sd-util to set the adapter to recognize as a 32GB drive instead of 2GB.

When it completed I popped it back into my 6100 (with Sonnet G3). OS 8.1 had no issues working with and booting from it. 🙂

1