OK, this is where I have got to. First I installed Mountain Lion on a partitioned external drive, so I now have a choice of booting to Lion or Mountain Lion.
I have cloned both Lion & Mountain Lion to another External drive
My intention is to erase the drive on my Mac and copy the mountain Lion Clone to the Mac HD.
I have never done this before, is it feasible and anything I should watch out for.
Mountain Lion seems to be running OK, but it is slow. I am assuming this is because It is running from an external drive.
Any comments on this?
I am new to Mac and am more knowledgable about Windows, so any help or advice will be muc appreciated.
Thanks
RP