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<blockquote data-quote="Randy B. Singer" data-source="post: 1951396" data-attributes="member: 190607">To my knowledge, there are no repair routines that you can run from the command line beyond what is available using Apple's (included with the Mac OS) Disk Utility.&nbsp; However, if you insist on using the command line you will need to do so booted into a special mode:- Startup your Mac into Single User Mode by holding down Command+S during startup.- At the prompt type in:fsck -fy- Keep on running FSCK until you get: &quot;The volume (name) appears to be OK&quot;- Type:reboot...to leave Single User Mode.See:How to repair a Mac storage device with Disk Utility<a href="https://support.apple.com/en-us/102611" target="_blank">How to repair a Mac storage device with Disk Utility - Apple Support</a>What concerns me is your use of exfat.&nbsp; I don't know how effective Disk Utility is with disks&nbsp; formatted as exfat.I&nbsp; had hoped that you would have the option of using the commercial product Disk Warrior, which can often perform miracles, but unfortunately it doesn't work with exfat formatted disks:Disk Warrior ($120)<a href="https://www.alsoft.com" target="_blank">ALSOFT - Makers of DiskWarrior.</a></blockquote>

[QUOTE="Randy B. Singer, post: 1951396, member: 190607"] To my knowledge, there are no repair routines that you can run from the command line beyond what is available using Apple's (included with the Mac OS) Disk Utility. However, if you insist on using the command line you will need to do so booted into a special mode: - Startup your Mac into Single User Mode by holding down Command+S during startup. - At the prompt type in: fsck -fy - Keep on running FSCK until you get: "The volume (name) appears to be OK" - Type: reboot ...to leave Single User Mode. See: How to repair a Mac storage device with Disk Utility [URL='https://support.apple.com/en-us/102611']How to repair a Mac storage device with Disk Utility - Apple Support[/URL] What concerns me is your use of exfat. I don't know how effective Disk Utility is with disks formatted as exfat. I had hoped that you would have the option of using the commercial product Disk Warrior, which can often perform miracles, but unfortunately it doesn't work with exfat formatted disks: Disk Warrior ($120) [URL='https://www.alsoft.com']ALSOFT - Makers of DiskWarrior.[/URL] [/QUOTE]

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