what if don't do a back up my files?
to upgrade to 10.7.3
MacBook Pro, Mac OS X (10.7)
to upgrade to 10.7.3
MacBook Pro, Mac OS X (10.7)
Then if anything goes wrong you will lose some or all of them. Put it this way, only an idiot would upgrade without backing up. You're not one of those, are you?
what if don't do a back up my files?