I'm going to buy 2T external HDD to replace my already full 1T HDD external. I want to keep the time machine backup data. In this case, is it just OK to copy all the time machine backup data in 1T HDD to 2T HDD?
I did some searching and found this (the caveat being that this applies to 10.5):
The common suggestion from that thread is for CCC is to a block-to-block copy of the old disk to the new disk.
I know this might be old, but here are the right steps to perform a Time Machine hard drive replacement preserving old backups, without having to use CCC or SuperDuper! (which I love, but are not needed).
I have a Mac Pro so to make things more complicated I added Two drives and created a RAID-1 (Mirror); once the mirror was working, I proceeded with these steps (sans the “plug drive”) ;)
The above comment is to demonstrate that the volume composition doesn’t affect this.
Like with any other Hard Drive operation, always make sure you have a backup or a way to restore your information in case something goes wrong. Read before you click “ok”. Use common sense and be careful.
You need to be familiar with Disk Utility (located in /Applications/Utilities/Disk Utility.app). It’s a very simple and straightforward application, but also very dangerous if you go coo coo and start clicking things without reading.
TIME MACHINE HARD DRIVE MIGRATION TO A NEW DRIVE PRESERVING BACKUP HISTORY
If everything went right, you should see two identical drives on your desktop, that is because the old drive was “fully duplicated” in the new one. The difference should be the free space, the new one should have more (if you are using a larger drive of course).
We’re almost done, but we need to activate Time Machine again.
Test it. Use Time machine to see if your files are there, recover some old files to see if they come, make sure everything is ok, you can reconnect your old drive and format it, or use it for furniture if you want.
If you previously had Spotlight configured to exclude your Time Machine, you might want to make sure that everything is ok. Maybe you’ll have to drag the Time Machine drive again. Just check it.
And that’s all. I hope you don’t destroy your data in the process. I came up with these steps by googling, experimenting and using common sense :) Hope it helps.
SuperDuper! works fine for me. I just changed my Time Machine disk last week and history is still there.
I think if you do 2 below steps can do it:
but general solution is to use Carbon Copy Cloner but somewhere I read that this was not work properly.