Reformat USB Flash Drive To create the bootable installer, plug the USB drive into your current Mac. Click the Go menu and select Utilities. Open Disk Utility, select the USB drive, and click the ...

[Editor’s note: This article is part of our series of articles on installing and upgrading to Lion (OS X 10.7). We also have a complete guide to installing and upgrading to Mountain Lion (OS X 10.8).] ...

This article is for people whose Macs came preinstalled with Mavericks. If you can download the Mavericks installer from the Mac App Store, you should instead use our standard instructions for ...

You know you’ve got a serious PC problem when your computer refuses to get through even the first phase of startup properly. If you can't get into Windows or macOS at all, then your troubleshooting ...