Mac Mini won't boot with USB Drive connected
The MacMini may be trying to boot from the connected drives and getting stuck. Go to System Preferences -> Startup Disk and select your internal boot drive. Then just close System Preferences or press "Restart..." button to test.
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slhck
Updated on September 18, 2022Comments
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slhck over 1 year
I have a 2012 Mac Mini with 2 x 3TB Seagate GoFlex Desk external hard drives. Both drives have their own power supplies and work perfectly.
I use both Mac OS X and Windows7 on the Mac for different reasons. Both boot and work fine.
The only problem is neither Mac OS X or Windows will boot while the two USB drives are connected. I must disconnect the USB cables, boot and reconnect them. Then all works fine.
It's rather annoying since this is mostly a Media Centre and you really don't want to be playing with cables every day, and I don't leave my stuff on over night.
Can anyone help?
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jmreicha almost 12 yearsThe OS may be trying to boot to the external drives. Hold down the command key while it boots to have it show a list of bootable devices.
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