why is my first Time machine backup smaller than my HD size?

STOCK411

macrumors 6502
Original poster
Oct 15, 2007
255
109
I got a new external hard drive and ran the first backup.. I have currently used 80GB of my hard drive but the first backup only is at 61.. Is something wrong?


Photos

Picture one is of my HD and my backup drive

Picture 2 is of time machine buddy..


All help would be appreciated...
 

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mfram

macrumors 65816
Jan 23, 2010
1,056
138
San Diego, CA USA
There are some files that don't need to be backed up. Like the pagefile and the hibernation image file. How much RAM do you have? The more RAM you have, the bigger those files will be.
 

STOCK411

macrumors 6502
Original poster
Oct 15, 2007
255
109
there are some files that don't need to be backed up. Like the pagefile and the hibernation image file. How much ram do you have? The more ram you have, the bigger those files will be.


8gb