If your Mac is having problems, macOS has multiple keyboard combinations that you can hold to recover your system, start in safe mode, run diagnostics, and more. Here's how to use them. Apple's macOS ...

Some USB and FireWire devices can cause problems with Mac OS X startup when connected prior to or during the boot process. As mentioned in our tutorial "Startup fails (particularly after a system or ...

Apple only sells OS X Mountain Lion as a digital download in the Mac App Store. The installer weighs in at a hefty 4.05GB, but the good news is that you can install your copy of Mountain Lion on all ...

Various FireWire and USB devices can cause indefinite stalls in the Mac OS X startup routine when connected prior to or during the the boot process. In many cases the stalls can be obviated by simply ...