Hi - I have a new iMac with OS X, which has no installation disc or CD/DVD drive. As I type I am in the process of doing an initial TM backup to an external harddrive. If my iMac disc totally failed and I had installed a new blank drive into the iMac, how would I restore from the TM backup? Would the Command+R option work in that instance? I am new to this, so apologies if this is a stupid question. I have heard of the need for a clone, but was wondering if the TM backup would be enough in the above situation.