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First aid high sierra volume could not be unmounted
First aid high sierra volume could not be unmounted












Could it be a hardware issue? : M.2 NVMe SSD Enclosure Adapter Tool-Free, USB C 3.1 Gen 2 10Gbps.Ī: M.2 NVMe SSD Enclosure Adapter Tool-Free, USB C 3.1 Gen 2 10Gbps, 6Gbps SATA PCIe M-Key(B+M Key), RGB Aluminum Case Support UASP Trim for SSD Size 2242/2260/2280 : Electronics This drive and enclosure are only about 12-13 months old, too. I could go to a Mac shop, but that would burn quite a few hours, and I’m wondering if they just use the apps above and charge me the same price… Haven’t checked prices on any of these either. I’ve never used DiskWarrior, but it has a good rep. These could be Chinese or who knows what, so I’m reluctant to try them unvetted. iBoysoft: Fix APFS fsroot tree is invalid in macOS Ventura/Monterey/Big Sur.Stellar: Fix APFS fsroot tree is invalid error on macOS.

first aid high sierra volume could not be unmounted

Other sites recommend recovering files and then reformatting using apps like these: Googling, most people just say reformat and restore from backup, but it seems her backups may have been failing for a while, so I’m not sure how current the data is. Trying to repair the boot drive in that mode shows it’s fine and there was nothing to fix.

first aid high sierra volume could not be unmounted

Tried booting into Recovery Mode (M1 MacBook) and then repeating the process there, but no difference.

first aid high sierra volume could not be unmounted

When you try First Aid on that drive, it gives a bunch of errors, such as those shown below. My daughter’s external SSD with a ton of media on it won’t mount anymore.














First aid high sierra volume could not be unmounted