At some point, you may find a need to boot your Mac from a disc or a drive other than the primary Mac OS X startup volume. Apple made it easy so all you need to know is just a simple keyboard command. Forgot apple id password on macbook pro.
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- A Mac can be started via a USB port, with a USB key or external hard drive, but that device needs to have Mac OSX system installed on it to boot, as well as other requirements. Best bet is to always backup your Mac hard drive with a bootable image created by Apple Disk Utility or a third party utility such as Carbon Copy Cloner.
- The OS on my Mac recently stopped working and in order to fix the issue I needed to use a bootable USB drive to reinstall the OS. I'm going to take you throu.
- CD/DVD drives are disappearing from computers, leaving USB storage as the only option when re-installing an operating system. The process is fairly painless and, if you have a bit of time and patience you can complete the task on a Mac.
Let’s say you need to use the Mac OS X installation disc that came with your computer to reformat the hard drive and put it back to factory settings. Or maybe you’re trying to boot from a USB flash drive that has a clean install of OS X on it for troubleshooting purposes. Perhaps you’ve got a cloned backup of your entire Mac on an external hard drive and you want to make sure it’s bootable. These are all potential reasons for booting to an external device, among many others.
How to install the OS from USB. Plug in your bootable USB drive and Restart your Mac while holding the Option key. Make sure to keep it pressed down! When it restarts, you’ll have a few options. Choose your USB Installer. Next, select the Disk Utility option. In the window, at the top of the left bar, select your Mac’s Main. If you have multiple USB drives connected, then the Startup Manager shall list the drives with the bootable OS. So, this is how to boot Mac from USB drive. Cd inlay printing software. Part 2: Common Problems and Fixes When Boot Mac from External Drive. You may face several issues during MacBook Pro Boot from USB or any external drive.
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There easiest way to boot to any device other than a Mac’s internal hard drive is to press and hold the Option key immediately after hearing the Mac startup chime. Continuing to hold this button down will bring up a menu where you can select a disc or drive to boot from. Use the keyboard arrows to choose your boot device, then press the Enter key. The computer will start up from the chosen volume, but bear in mind performance will likely be much slower than when you normally operate your Mac. This is especially true of USB flash drives.
Rather than hold the Option key, you could instead just press & hold the C key if you’re booting from a CD or DVD disc. This will bypass the selection menu and immediately start from the disc. It won’t work for USB and FireWire drives, though.
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Booting to another volume using either of these methods is a one-time temporary change, so you don’t have to worry about altering any settings to reverse it. Your Mac will go back to booting to it’s primary startup disk next time you reboot. Apple macbook pro games download.