The Jimmonator
Level 1 (0 points)

Q: My Mac Pro won't boot

I recently have been trying to downgrade from OS X Lion to Snow Leopard. It's a pain in the ***.

My Mac Pro has 3 hard drives, the third one I don't use at all so I decided to restore the hard drive to the disk image of the Snow Leopard OS X install DVD. I read multiple articles saying this was one of the ways to do it.

I then chose to restart the Mac from the third hard drive (the one which was now a snow leopard os x install drive) and the mac pro simply will not boot now. Holding shift to go into safe mode, option to boot from a different hard drive or recovery doesn't work, all I have is a black screen. no signal to my monitor at all. I can hear the machine working fine.

 

It seems like I basiaclly need to force my Mac to boot from the first hard drive with lion again but right now I simply can't think of a way. if i could just reformat every hard drive in the mac i would!

 

Any help would be appreciated

Posted on Feb 15, 2013 12:40 PM

Close
The Jimmonator

Q: My Mac Pro won't boot

  • All replies
  • Helpful answers

Previous Page 2

  • by Grant Bennet-Alder,

    Grant Bennet-Alder Grant Bennet-Alder Mar 29, 2014 1:54 PM in response to The Jimmonator
    Level 9 (61,390 points)
    Desktops
    Mar 29, 2014 1:54 PM in response to The Jimmonator

    I tried to connect an external DVD drive and put in the snow lepoard discs and held C but still nothing.

    "C" only boots from a DVD in the Internal drive.

     

    To boot from an External drive, hold Alt/Option (one key) and wait for it to show you what is available. Then choose the best and proceed.

Previous Page 2