Missing disk on reboot - Monterey Issues https://forums.softraid.com/macos-issues-2-2-macos-issues-2-2-monterey-issues/missing-disk-on-reboot/ SoftRAID Discussion Board en-US Tue, 28 Apr 2026 12:46:41 +0000 wpForo 60 RE: Missing disk on reboot https://forums.softraid.com/macos-issues-2-2-macos-issues-2-2-monterey-issues/missing-disk-on-reboot/#post-14862 Tue, 01 Mar 2022 17:42:31 +0000 If only one disk is missing, this means the disk was hanging. Perhaps if you looked at the enclosure, one disk light was solid on.

I would put a SoftRAID disk label on that disk. See if it happens again. If it does, swap the disk to another slot, and see if the hang follows the disk or the slot. then you have a clue which is failing.

]]> Monterey Issues SoftRAID Support https://forums.softraid.com/macos-issues-2-2-macos-issues-2-2-monterey-issues/missing-disk-on-reboot/#post-14862 Missing disk on reboot https://forums.softraid.com/macos-issues-2-2-macos-issues-2-2-monterey-issues/missing-disk-on-reboot/#post-14861 Tue, 01 Mar 2022 17:37:42 +0000 I had an issue where on rebooting the mac it said I was missing a disk. I know this has something to do with the Thunderbolt controller not starting correctly.  After shutting everything down and rebooting it was fine it just took a couple of minutes to rebuild the missing disk, it's still a scary thing to see.  Is there any way to prevent this error on a reboot, should I always completely switch off the Thunderbay before a reboot or is this issue being worked on?  Thanks!

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