Journal sillypixie's Journal: Mac geek stuff 12
Hope this isn't too stupid a question:
I've run an rsync backup of my Mac to an external drive, and now I'm trying to prove to myself that my backup is capable of being externally booted in the case of disaster.
I reboot holding down the option key, and I select my external drive as the boot drive -- then the machine comes up and looks identical, regardless of which drive I boot from.
How do I know that it worked? df shows that both disks are mounted, but I don't see my external drive mounted as root -- isn't that bad?
I'm vewy confused... I need to get my OSX book back from my dogwalker dammit...
If you happen to have been here done that and can point me in the right direction, I would appreciate it
Pix
I punted (Score:2)
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The rsync backup was painless too, I was quite impressed. No incrementals though. I suppose I could actually set up Amanda too, now that I think of it...
Jeez I'm waxing nostalgic over system administratio
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There are a couple of ways to do incrementals with rsync, I just hacked a "cp -al" in after rsync finishes (rsync copies to temp. files and does a rename() ... so this works). I've also seen people use some scripts (rdiff-backup, I think) that stores deltas between the old and new, as rsync does the backup (although this means you need all previous versions to go back to a specific version). I've no idea about OS-X though :).
Here's the article (Score:2)
A low-tech workaround (Score:1)
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Hm, I still have my old G4 powerbook - seems to me the disk is more accessible there -- perhaps I'll rsync that drive and then disconnect the internal drive. I'm giving that machine to my sister, and want to have it backed up anyways.
Excellent...
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Wow, this is definitely a case where it pays to RTFM. Or at least it pays to know people who RTFM. Thanks for being my FM-buddy, Sam!
Pix
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You're way ahead of me. (Score:2)
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http://www.egg-tech.com/mac_backup/#advanced [egg-tech.com]
The backup script works like a charm, as long as you have an HFS-formatted partition to push it to - and over USB 2.0 the speed was really good. The only thing that needed to be tweaked was the actual mount-point of the external volume in question (this gets changed in 2 places).
It's just the booting-from-your-backup part where I became confused. all the partition information that I backed up would obviously relate to the internal disk, so
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