Disk Utility First Aid says 'invalid btn_btree.bt_key_count' on APFS volume
Before APFS, when I did a SuperDuper backup I used to regularly click Repair Disk in Disk Utility to check the health of my drives and see if anything needed repairing.
After updating to APFS I no longer do this, because I got the impression APFS has many integrity checks and other features that make that unnecessary. However today, just for fun I tried running "First Aid" in Disk Utility on my primary drive, which has been on APFS for some time. To my surprise it showed an error: Code:
Verifying file system. As suggested I booted into Recovery Mode and ran First Aid - but it just reports the same error again, and gives no sign of attempting to repair anything. So my question is: do I need to worry about this error? Or, based on the fact that First Aid says "exit code is 0" and "Operation successful", and does not attempt any repairs, do I not need to worry about it? I realize this is not strictly a SuperDuper question - but I think you've acquired some knowledge of APFS, so I was hoping you might have some insights :cool: Thanks for any pointers. |
Unfortunately, the insight is "APFS repair doesn't work well yet". Hopefully it's not causing any errors - it sounds like it isn't.
You could, of course, check your backup, reformat and restore to "fix" it... |
Thanks Dave, that is very helpful.
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