Boot your machine with the Option key down to invoke the Startup Manager, then hold down the Control key prior to clicking on a volume to boot.
#PICK BOOT DRIVE MAC MAC#
Here’s a shortcut that may (or may not) work for you, depending on which particular Mac you own. Step 9: Click OK to continue when the formatting finishes. Step 8: Now proceed further by clicking Yes. The Bless command changes the startup disk. For example, you could name it macOS bootable USB. Type sudo bless -mount /Volumes/StartupDiskName -setBoot without the quotation marks into the Terminal window. Step 7: Give some name to the drive and click OK. The Startup Manager allows you to override the default boot disk and choose another to boot from for the current session-but doing this won’t change the default boot disk.īut what if you want to permanently start booting from the selected volume? Typically, you’d let the Mac boot from your chosen disk, then go into the Startup Disk System Preferences panel and set that same disk as the startup disk. Step 6: Click Yes on the warning message when prompted to continue formatting. Start up the computer and hold the 'Option' key to bring up a simple interface that will list available boot. Sometimes, restarting your Mac is more than enough to fix the problem. The Boot menu This is perhaps the easiest way to select an available boot device.
#PICK BOOT DRIVE MAC PRO#
You’re probably also familiar with the Startup Manager, which appears if you hold down the Option key during startup. 4 Fixes to a MacBook Pro That Cant Mount Its Startup Disk 1. Make sure you have the right drive prioritized. Change this setting so that the device of your choosing is at the top of the list. If visible, select the internal hard drive from the left side panel by clicking on. The screen will show a list of devices that your computer can boot from. If your Mac wont boot up as it detects the startup disk is missing. It also respects Open Firmware passwords.
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As you’d guess from its name, this panel controls which of your bootable volumes is used when you boot your Mac. Look for a setting that says Boot Order, First Boot Device, Boot Management, or something similar and select it. BootPicker offers an interface that allows a non-administrative user to choose from multiple startup drives at boot (before the Login Window is displayed). 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.
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