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Ravich

macrumors 6502a
Original poster
Oct 20, 2009
773
0
Portland, OR
I have a hard drive in my Mac Pro that has been loading extraordinarily slowly lately, so I ordered a replacement drive.

It arrived today, so the first thing I did was tell time machine to do a backup. I noticed that one of the steps it specified was "deleting old backups" and I have no idea why. Then it started backing up 400 or so GB at a rate of maybe 20MB every 3 seconds. I have no idea why it would need to backup 400GB because nothing has really changed since previous backups.

Because I didnt want to wait, I stopped the backup, and turned by computer off and replaced the hard drive. Now, with my computer on, I am looking at time machine, and I see that I have only one backup from August 28th, and it has all of my drives greyed out except for my home drive boot drive.

What the hell just happened?



EDIT: *sigh*

The drive is too sluggish to actually do a clone, which I wanted to avoid in the first place. Estimated time started at 17 hours and grew to 28 hours within a few minutes. I still cant understand why Time Machine decided to delete old backups. Clearly it was to make room for the 400GB backup, but.... oh. I'm guessing that the HDD I was replacing is so screwed up that Time Machine thought that it was something different entirely, so it tried to backup 100% of the contents.

Who would have thought that backing up would cause such a massive problem -.-
 
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