Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

AppelGek

macrumors member
Original poster
Aug 13, 2010
46
0
USA
So I had Snow Leopard on my MacBook Pro, installed DP1, flawless --now I am trying to install DP4 but it does not work, have resorted to erasing the main disc ergo it's now OS less :)

Tried installed Snow Leopard, but it says I can't install it "over" Lion (which is not there anymore)

When I try to install Lion DP4 I get a screen that reports it has to check with Apple (http://twitpic.com/5c3t21) and it returns this screen: http://twitpic.com/5c3t22.

Can anybody please help me... thanks!
 
it's a MacBook Pro 13-inch mid 2010. (2.4GHz or 2.66GHz Intel Core 2 Duo processor with 3MB on-chip shared L2 cache)
 
I do indeed, tried putting that back but it was going to take 36 hours so I figured why not try some other things.
 
Have you tried repartitioning & then formatting your disk after you've booted from the Snow Leopard DVD ? It probably contains a later version of the HFS filesystem for versioning and such.

If push comes to shove you can always install to external disk, then use Carbon Copy Cloner to sync it onto your internal drive; bit of a hack to be sure but might work if nothing else does :D.
 
I will try that right now, tried repartitioning with the Lion CD in it, but it kept erroring because it could not unmount/mount.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.