Does anyone know how to change the UUID of a Volume? The background for this question is that I have a duplicate UUID issue:
/Volumes/OldMacHD with a UUID of XYZ. I have
/Volumes/Mirror1 with a UUID of XYZ (same UUID! I bet that's because OldMacHD USED to be part of this mirror). I got these UUIDs via:
diskutil info /dev/thatdisknumber | grep UUID
I’d like to change the UUID of
I discovered by chance the
hfs.util utility, since these are HFS volumes after all. The man page for
hfs.util says that if you issue the
-s flag, this changes the UUID. However, if you type
hfs.util all by itself, it doesn’t show you the
-s option at all, just every option besides that! Grr. I tried it anyway:
sudo /System/Library/Filesystems/hfs.fs/hfs.util -s /dev/disk4 (the raid volume).
Nothing happens. No error message, no success message. UUID exactly the same. I tried it while the volume was unmounted.