3 Replies Latest reply: Nov 5, 2011 11:28 PM by JJ.HK
JJ.HK Level 1 Level 1 (0 points)

I install Windows 7 64 bit and rEFIt into a USB hard disk and hope to boot from my iMac 27" (2010 Mid). However, it shows that no boot deivce is found.

 

If I plug the SAME disk to my Macbook Pro 17" (2009 Mid), it can boot Windows 7 without any problem.

 

I tried with Linux and get same result, iMac says no boot device while my Macbook Pro can boot it without problem.

 

I tried experiment for weeks and still can't get iMac work.

 

I think it is very abnormal and I wonder if someone can tell me how to fix it or any directory to solve this problem.