Creating HFS Disks and Images Under Snow Leopard 10.6 — #14

Post #14 by Gorgonops

Source Forum	68kMLA
Category	Troubleshooting
Post Date	Thu, 17 Sep 2009 - 15:38
Original URL	https://68kmla.org/bb/threads/creating-hfs-disks-and-images-under-snow-leopard-10-6.18580/

Post

Now for the bad news. SheepShaver mounts the device but immediately gives me the old "This Mac Cannot Recognize This Disk ... Do You Want To Initialize" Then it gives me only one visible choice: "ProDOS OK" I can also select another position on the drop bar with nothing. I have not yet initialized the disk because it otherwise shows up on my Snow Leopard desktop as a perfectly readable HFS volume, and under Panther, a fully interactive HFS volume. Again I have not tested it on a vintage Mac yet. However, when I launch Disk First Aid under SheepShaver's 8.6, the ZIP drive shows up with a garbage name: "p!.. IȦ̇̃ ᴂ". Choosing "erase" also only produces ProDOS OK, or the blank option. Attempting to erase other volumes produces the choice of HFS standard. So I'm not sure where the problem lies.

EDIT: Some good news. I put in a ZIP disk which was formatted HFS on a vintage Mac. The ZIP disk that did not show up properly was formatted HFS under Panther.

Evidently the disk must be pre-formatted HFS standard in order for SheepShaver to mount it or erase it.

Can you post the output of "diskutil list" for the disk that didn't work? Seeing you say that the one that didn't work was formatted under Panther makes me think I know what's wrong.

(In my first post about doing this with a USB stick, I mentioned I had to force Disk Utility to repartition the disk with an "Apple Partition Map" partition table. USB sticks of course by default have a DOS MBR partition table, and merely "formatting" the disk with Disk Utility kept the MBR style partition table. With the MBR table when I tried to mount the stick in Sheepshaver I got exactly what you did, that prompt about formatting it "ProDOS OK". I'm willing to bet your "bad" ZIP disk has an MBR partition table on it.

That of course would never happen on a disk formatted under OS 9 or earlier.)