365 Views 3 Replies Latest reply: Nov 16, 2012 3:36 PM by tzbikowski
Currently Being ModeratedNov 16, 2012 3:36 PM (in response to leck1129)
Hard to say as you give no details which iMac it is.
Obvious would be to try different USB port. They look the same but sometimes they are not.
Otherwise you may need to burn yourself a bootable disc.