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

STOCK411 · Feb 23, 2015

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...

mfram · Feb 24, 2015

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 · Feb 24, 2015

mfram said:
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

Weaselboy · Feb 24, 2015

You are fine. Like mfram said, there is a bunch of stuff that is excluded like cache files.

http://pondini.org/TM/11.html

Look at this link for more info on exactly what is excluded.

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

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