- #How to choose boot drive mac mac os x#
- #How to choose boot drive mac install#
- #How to choose boot drive mac windows#
You may also notice that there are two predefined sizes to choose from, via the two buttons located just below the display of the partitions.
#How to choose boot drive mac windows#
You'll also notice that you can't make the Windows partition smaller than 5 GB, although as we mentioned earlier, we don't recommend making it smaller than 20 GB.
#How to choose boot drive mac mac os x#
Use your mouse to click and drag the nub between the sections, to expand or shrink each partition, but don't click any of the buttons yet.Īs you drag the nub, you'll notice that you can only shrink the Mac OS X partition by the amount of free space that is available on the selected drive. The hard drive you selected in the previous step will display in Boot Camp Assistant, with one section labeled Mac OS X and the other labeled Windows. I am not sure that the Mac can boot from USB3 and fear that I may have to boot from firewire which means buying an adapter that converts from thunderbolt to firewire.Use the slider to divide the existing hard drive into two partitions, one for the existing OS X and one for Windows. I would like to boot from USB3 if possible. I am getting another 3 TB drive to mirror my 3 TB fusion drive so that I have a bootable copy of my current setup so if something goes wrong I can plug in and go. it can’t boot since the OS was installed on the mini and not from the iMac.
On the new mac there is no firewire so I had to hook it up with USB 2.Ģ. Unfortunately, even though it seems to be available in target disk mode, the system won’t boot.
#How to choose boot drive mac install#
I did a nice clean install and didn’t bother to import my old settings, preferences, software.īut there are things I would like to do with my old lion drive. Recently, I got a new iMac with 3TB fusion drive. It was much faster than the 5400 speed 2.5″ internal drive in the mac mini. My old mac booted from a 1TB Newertech MiniStack via Firewire 800.
Your Mac will go back to booting to it’s primary startup disk next time you reboot. It won’t work for USB and FireWire drives, though.īooting 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. This will bypass the selection menu and immediately start from the disc. 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 is especially true of USB flash drives. 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. Use the keyboard arrows to choose your boot device, then press the Enter key. Continuing to hold this button down will bring up a menu where you can select a disc or drive to boot from. 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. These are all potential reasons for booting to an external device, among many others.
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. 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. 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. Apple made it easy so all you need to know is just a simple keyboard command. 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.
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