hmmm
Bloc de code:
diskutil resizeVolume disk0s2 900g jhfs+ TEST 0b
Resizing to 900000000000 bytes and adding 1 partition
Started partitioning on disk0s2 Macintosh HD
Verifying the disk
Verifying file system
Volume was successfully unmounted
Performing fsck_hfs -fn -x /dev/rdisk0s2
Checking Journaled HFS Plus volume
Checking extents overflow file
Checking catalog file
The volume Macintosh HD could not be verified completely
File system check exit code is 8
Restoring the original state found as mounted
Error: -69803: Couldn't modify partition map because file system verification failed; please verify and repair each volume individually and then try again