Performing Disk Repairs on OSX without Install Disk

I dont travel with my OSX install disk (seriously, who does?) and found myself in a situation where i needed to repair my macbook pro’s hard drive using said installation disk.

There are two options if you find yourself in a similar position:

  • Start in safe mode: Hold shift down during start up (performs a simple disk scan)
  • Start in single user mode and run fsck: hold down command+s during start up and run the following command in the terminal prompt when ready: /sbin/fsck -fy

You’ll find more details on this apple support page

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