Whenever I try to resize my OSX partition on my SDD from 251GB to 210GB, I get this error:
Couldn’t modify partition map because file system verification failed.
- Booting into recovery mode and trying from disk utility there (repairing and partitioning)
- Booting into single-user mode and running
fsck -fylike seemingly every website suggests
but whenever I try to do this in any situation, I still get this error. This is frustrating because AFAIK only OS X knows how to resize an OS X partition.
How can I get around this?
- Apple Diagnostics gave no errors.
- I first had this error when I had filevault (full disk encryption) turned on. I have since turned off FileVault and repaired any errors I caused by trying to partition the encrypted disk with Disk Utility in recovery mode. I have checked again that FileVault is off, and it is.
$diskutil list /dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *251.0 GB disk0 1: EFI EFI 209.7 MB disk0s1 2: Apple_HFS Macintosh HD 248.4 GB disk0s2 3: Apple_Boot Recovery HD 1.7 GB disk0s3 $ diskutil cs list No CoreStorage logical volume groups found