Currently Being ModeratedJan 26, 2013 1:36 AM (in response to marinko70)
thanks for the help. I followed the instructions. set-up new TM preferences and started backup. It added around 8GB to the original 99GB, but still short of the 170GB for user data on my mac and just under 200GB for the harddrive. Again most of the discrepency seems to be in itunes files, although I can't be absolutely sure it's only here.
i'd appreciate any suggestions. os is at 10.8.2
Currently Being ModeratedJan 26, 2013 1:43 AM (in response to marinko70)
ps. i excluded the itunes 'music' folder which contains the music, films etc in TM preferences and it calculated that the backup size would be around 70GB, however on starting the backup TM says it will back-up 29GB. again seemingly quite random.
Currently Being ModeratedJan 26, 2013 2:25 AM (in response to marinko70)
after some further dabling your solution works, but I also needed to delete the original backup on the external drive and start everything from scratch. As I was installing a new drive and I've still got my old backup disk, I didn't lose 2+ years of backups. following all this it's backing up the full mac drive now.