There are many reasons to reinstall macOS. It can fix any one of several OS errors. Plus, it helps secure your Mac for sale if you need to wipe all of your data. There are a few different ways to do ...

MacOS includes a recovery partition that allows you to easily erase all data on your Mac and reinstall your OS without an installation disc. In this article we will show you how to reinstall Mac OS ...

Users sometimes scoff or cringe at the notion of reinstalling the system. But consider this: on the one hand, system software is complicated, and the source of problematic system behavior can be ...

The Mac OS X Lion operating system includes a recovery utility that you can use to reinstall the operating system if necessary. If you have a partitioned hard drive, you simply need to select the ...

Navigate Recovery Mode on Intel and Apple Silicon Macs for Reinstalling OS, Troubleshooting, and More Reviewed by Ryan Perian To restart an Intel Mac in Recovery Mode, hold Command+R when the computer ...

My friend was wiping my Mac so I could sell it and I’m pretty sure they’ve deleted the start up disk? It’s not letting me reinstall the OS on a recovery startup. She wonders about a fix. There are a ...

It sounds like you might need to create an installation CD somehow. I don't know how you would do that on the PC.

Now here’s a bizarre headscratcher. A reader’s Mac Pro was upgraded from Snow Leopard to Lion, then refused to subsequently boot off the Snow Leopard DVD to reinstall the older OS on another drive.

Apple is shipping Mac OS X 10.7 Lion via the Mac App Store so how will you reinstall Lion without a DVD or USB stick? Here’s one way you can do it, but it might not be the best way. The Lion ...

New Mac computers are causing problems for some users who tried to reinstall OS X or restore their computers from a back up. The problem stems from a permissions issue that occurs when the Mountain ...

-system -<BR>Powermac 5500/225<BR>OS 8.0<BR><BR>This will boot without extensions. Without bypassng them, the OS starts to load from either the CD or from the HDD but stops before any extensions ...

Two recent Apple KB articles of note: 106605: Mac OS X 10.1: Do Not Reinstall After Using the Mac OS X Update 10.1.1 states: "You should not reinstall Mac OS X 10.1 ...