Apart from the default startup disk, Mac computers can be set to start up from a different disk like an external drive, network volume, or a USB flash drive. This article explains the process for ...

Disk Utility is Apple's go-to macOS app for finding and repairing common disk errors, but if it's your Mac's internal disk that's the problem, then your Mac might not even start up into macOS.

Apple Software Restore lets you clone your Mac even with a Signed System Volume. Here's how to use it to copy your Mac's storage. For a variety of reasons, you may want to make a clone of your Startup ...

When something goes wrong with your Mac, it's a boon to have a separate, external drive that you can work from — but Apple no longer makes that easy. Here's how to do it. The short answer to how you ...

If your Mac has multiple bootable disks—via either a partitioned internal disk or external FireWire drives—you’re probably very familiar with the Startup Disk System Preferences panel. As you’d guess ...

Last week, I posted a video on how-to create an SD card startup disk for the new MacBook Pros, the ones with the built-in SD card slot. I got several e-mail responses to that video, all of them asking ...

Change Startup Disk 1.03 is an update to this utility that allows you to bypass Startup Disk System Preferences and change the startup disk. One Button Booting from Classic to Mac OS X On a similar ...

120024: Startup Disk: Document and Software contains the ReadMe document for StartUp Disk 9.2.1, with links to the software downloads. 31370: Mac OS: "Can't Open Preferences File" Message covers what ...

My HD has two user-accessible partitions, Large HD and Macintosh HD. They both had 10.6.8 installed. I could switch Startup Disks. I wanted to install Yosemite on Large HD but could only access the ...

Jason Snell describes on Six Colors how Apple Silicon Macs will handle boot and recovery modes: With the advent of Macs running Apple-designed processors, things will get a whole lot simpler. As ...