Cannot Partition Disk with Disk Utility

disk-utilityerrorpartitionsnow leopard

I can't seem to partition my disk with Disk Utility or with the Terminal command (see screenshots).
Something also happened to my other partition running Mavericks, where it just turned into an "empty name" partition, but still runs fine. Any help would be much appreciated

Best Answer

You could try booting into internet recovery (hold Command+Option+R during boot) once there open disk utility and try partitioning again.

Related Solutions

Deleting a partition in Disk Utility fails. (Error: -69879)

Never mind - problem solved.

Turns out that the whole drive's partition table cannot be modified if one partition has encryption on, since CoreStorage is on. (The one that I had on was the encrypt feature for Time Machine.)

Disk Utility hangs prior to resizing partition

Yeah I do encounter this problem sometimes also, but I don't know why is it happening. For some verifying and repairing solves the problem, but for those that doesn't get solved, the command line tool diskutil often does the job.

You can just use

diskutil resizeVolume $1 $2

where

$1 is the Mount Point or Disk Identifier or Device Node of the disk you are trying to resize (obtained with diskutil list).
$2 is the size in decimal with suffix of B, S(512 byte blocks), K, M, G, T, P, or percentage of the current size(%).

e.g. diskutil resizeVolume disk0s6 100G will resize the volume disk0s6 to 100 GB.

Best Answer

Related Solutions

Deleting a partition in Disk Utility fails. (Error: -69879)

Disk Utility hangs prior to resizing partition

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