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Running File System Check (fsck) on OS X |
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You can optimize OS X by running File System Check. This will search for file system errors and make the corrections needed.
To run OS X File System Check:
1. Click on Apple menu – Restart
2. At the chime or right when the screen shuts off, press and hold Command + S to startup in Single User mode.
3. At the command prompt local host:/ root# / type the following:
/sbin/fsck –fy
4. Press the Return key. This executes the File System Check and allows any repairs needed. Notice the display indicating what is being checked (HFS Plus volume, Extents Overflow file, Catalog file, multi-linked files, Catalog hierarchy, volume bit map, volume information).
5. If errors are found, you’ll see notices during the check or the message FILE SYSTEM WAS MODIFIED. Run the File System Check command (/sbin/fsck -fy) again until all errors are repaired and you see the message The volume Macintosh HD appears to be OK.
6. At the command prompt local host:/ root# / type the following:
reboot
It is good practice to run File System Check once per month and before any system update to help keep your Mac error-free!
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