If you need to reinstall Mac OS X 10.1, you should back up data and erase the affected hard disk or partition prior to installation.

Boot to recovery partition. Erase the OS partition using Disk Image. Reinstall Mavericks. Go to the App Store to install all the available updates.

Reinstalling Mac OS X on a Partitioned Hard Drive. The Mac OS X Lion operating system includes a recovery utility that you can use to reinstall the operating system if necessary.

Reinstalling OS X 10.1 after Security Update MacFixIt readers remain largely stumped as to why Apple warns against reinstalling OS X 10.1 after installing the Security Update (see yesterday's item).

If you ever need to restore the entire contents of an OS X Lion startup drive, or just perform a reinstall of the OS, you’ll find that there are numerous ways to accomplish these tasks. In fact ...

A bootable Mac OS X thumb drive comes in handy when you need to troubleshoot OS issues for yourself, your family, or your friends. It’s also extremely useful for keeping your basic setup ...

Need Tips On Reinstalling OS X GasMannJoel Jul 1, 2002 Jump to latest Follow Reply ...