I have a MacBook Air running macOS Catalina 10.15, upgraded from an older version.
There's only a few 10s of megabytes free on the disk, but deleting files and emptying the trash doesn't change the amount of free space.
- looking for time machine snapshots that can be deleted, but there do not seem to be any (
tmutil listlocalsnapshots /System/Volumes/Datadoes not show any snapshots to remove)
running disk utility first aid after booting in recovery mode on the Macintosh HD - Data partition. This produces an error...
Checking snapshot 1 of 2 (com.apple.apfs.purgatory.115b2) error: btn: invalid key order (1) oid 1742762 / oxid 0 / level 2 / flags 0x1 previous key: [...] current key [...] next key [...] snapshot invalid the volume /dev/rdisk1s1 could not be verified completely```
disabling SICP using
csrutil disableand rebooting
- running fsck in single user mode:
fsck -fwhich yields:
error: container /dev/rdisk1 is mounted with write acessbut trying to
umount /dev/rdisk1tells me that /dev/rdisk1 is not currently mounted.
fsck -f /dev/rdisk1s1produces the same message.
- same with running
fsck_apfs -f /dev/rdisk1s1
I'm about at my wits end here. Anyone have suggestions for further things to try?