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Ensure 'Ignore Ownership' is not enabled on backup drives System
I just had my iBook repaired by Apple and they replaced the hard drive - which should have been fine, since I made a working backup with psync to a FireWire drive, but it wasn't! When I restored from the backup, the resulting system would not boot. I had to run "Repair Permissions" from the OS X CD first. I couldn't figure out why psync was working one way (I can boot from the firewire drive just fine), but not the other. Then, looking around the web, I found this little bit of advice on Mike Bombich's How to Create a Bootable Backup of Mac OS X page:
Make sure the "Ignore privileges on this volume" setting is not checked for your source or target volume (Note: this setting is called "Ignore ownership on this volume" in Jaguar). To check this setting, click on the target volume, choose "Show Info" or "Get Info" from the File menu in the Finder and select the Privileges menu (Jaguar: click the disclosure triangle next to ownership and permissions). Make sure the box at the bottom is NOT checked, otherwise permissions and ownership settings will not be preserved, no matter what tool you use to copy files."
To be honest, I can't verify that this is what caused the problem, since I didn't try doing a new backup and restore after I got everything working; but it seems like good advice nonetheless!

Interestingly, even after I fixed the permissions, I still had a strange problem where the volume could not be adjusted. It was stuck at the minimum setting. Because of this one little problem, I had to reinstall the OS, even though everything else was working fine!
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Ensure 'Ignore Ownership' is not enabled on backup drives | 5 comments | Create New Account
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OffTopic: Does anybody know where "Repair File Permissions" knows which permissions are correct?
Authored by: mael on May 27, '03 09:45:23AM

there must be a table somewhere, right? or is coded in the file itself as a sort of "default"? or is it dependent on the directory above .. naah..
*sigh*
Anybody?



[ Reply to This | # ]
Use CCC first
Authored by: pbeaudet on May 27, '03 12:42:48PM

I used CCC to make the initial backup to my external firewire drive. From then on I have used psync for the backup.
Several times, with 10.2.5 upgrade, I have had to restore my internal drive. I used CCC to clone it from the external drive with no problems.

Phil

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pjb



[ Reply to This | # ]
I'M SORRY I'M SORRY I'M SORRY - I thought I was in the forum - this shouldn't have gone here!
Authored by: mael on May 27, '03 09:56:59AM

sometime i am not quite aware of where i am. happens on my job too... ;-)

why can't i delete my own stupid posting...



[ Reply to This | # ]
Insure 'Ignore Ownership' is not enabled on backup drives
Authored by: luhmann on May 27, '03 10:14:35AM

I've now decided to use Carbon Copy Cloner instead of Psync (or any psync related tools) because it seems to be much more careful about how it does things. Although CCC uses Psync for synchronization, it initially does a copy using "ditto" - at least for the top level of the drive. This seems to overcome some psync problems, although the author does not detail exactly what these are.



[ Reply to This | # ]
Use CCC first
Authored by: pbeaudet on May 27, '03 12:45:10PM

I used CCC to make the initial backup to my external firewire drive. From then on I have used psync for the backup.
Several times, with 10.2.5 upgrade, I have had to restore my internal drive. I used CCC to clone it from the external drive with no problems.

Phil


---
pjb



[ Reply to This | # ]