Hybrid CDs on Big Sur
audvare at gmail.com
Wed Mar 9 04:40:29 UTC 2022
> On 2022-03-08, at 18:49, Sriranga Veeraraghavan <sriranga at berkeley.edu> wrote:
> I have some older CDs that appear to be master with a Mac (HFS/HFS+) partition and a Windows (FAT32?) partition.
> Under BigSur (on M1), Finder and DiskUtility only seem to want to mount the Mac partition on these CDs and don’t seem to provide a way to access the Windows partition.
> I’ve been able to access the Windows partition by running on Linux running under an emulator, but this is somewhat clunky.
> Does anyone know of a way (perhaps through a port in macports) to mount the Windows partition on a hybrid CD?
You should be able to use /sbin/mount_cd9660 to mount the area seen by Windows (ISO9660 with Joliet).
sudo /sbin/mount_cd9660 -r /dev/... mount-point
To make an image:
dd if=/dev/... of=x.raw conv=notrunc bs=2048
Also try installing cdrtools and using the 'readcd dev=/dev/... -clone f=x.raw' command.
Both of these may result in a proper image that has the ISO9660 filesystem and the HFS. You should be able to mount the ISO9660 file system with the image with /sbin/mount_cd9660 just the same.
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