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Transfer a Time Machine volume to a larger disk
Authored by: tempel on Dec 18, '10 04:18:18AM
I tried this myself yesterday, and can also confirm that this works:

This is basically the same technical method that I had described in my article, i.e. copying ALL sectors of the old disk to the new one, then adjusting the volume size to match the new disk's larger space. Just much, much easier than my version.

I also tried the method described by Apple of just copying the .backupdb folder in the Finder.

My final conclusion:

If anyone wants to replace their Time Machine disk with a larger disk, this technique using Disk Utility is preferrable over the one described in the KB article from Apple, because Apple's technique takes several times longer (e.g. almost a full day instead of just a 4 hours in my case with a full 1 TB backup).

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Transfer a Time Machine volume to a larger disk
Authored by: wallybear on Dec 20, '10 06:29:44AM

It's way faster than copying the .backupd folder because choosing "Erase destination" will start a block copy, faster than a file-by-file copy.
And the volume resizing is done automatically by Disk Utility, so this is a one-step process.
But if you need to keep the data already present on the new TM volume DO NOT enable the "Erase destination" option, and TM data will be merged (or use the .backupd folder copy method).

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