Tell me more ×  My HD died on my MacBook pro so I decided to
change the HD myself. I didn't have the original snow leopard
disc so got a copy from a friend. When I try to boot from disc
(holding c) is runs the DVD drive, followed by apple symbol.
After a short while, the apple symbol is replaced by a no entry
symbol. Totally at a loss as to what to do. Tried different
copies of the copied disc, but same issue.  Any thoughts?
share|improve this question add comment  3 Answers  Is your
friend's Snow Leopard disk one he got with a Mac, or one he
purchased at retail?  Disks that came with Macs are hardware-
specific, if it came from a different model/revision than your
MacBook Pro, then it likely won't work.  Try your install with a
retail disk (or a Lion/Mountain Lion installer on USB) and see
if that works.  share|improve this answer add comment  You need
to use the disk that was shipped with your MacBook or atleast
the orginal OSX disk for the same model.  share|improve this
answer add comment  Was your machin