OJBs Web Site: Tip

Note: You are currently viewing my old web site. There is a new version with most of this content at OJB.NZ.
The new site is being updated, uses modern techniques, has higher quality media, and has a mobile-friendly version.
This old site will stay on-line for a while, but maybe not indefinitely. Please update your bookmarks. Thanks.

(Up to OJB's Mac Tips List Page)

Verify Disks from Terminal

Find the disk to repair using: diskutil list
Make a note of the disk you want to work with (in the IDENTIFIER column)
The disk name will be in this form: /dev/diskID
For example: /dev/disk3s1

To verify the disk, type: diskutil verifyVolume /dev/diskID
Where /dev/diskID is the ID you identified above
the verify might take a while. When complete a message stating if everything is OK
will appear, or it might say repair is necessary.

To verify a disk instead of a volume, use the verifyDisk option instead

To repair a volume, use: diskutil repairVolume /dev/diskID
To repair a disk, use the repairDisk option.
Note that you cannot repair the boot disk, boot form another disk first.