Background and question
I read of someone using a Mountain Lion Recovery System to attempt repair permissions of an installation of Lion.
I understand that for repair of permissions of Lion, it may be preferable to use OS X 10.7.5 or Recovery OS 10.7.5.
A question remains:
- for repair of permissions of an installation of Lion, is it safe to use Disk Utility in a Mountain Lion Recovery OS?
… The data that guides the permissions verification is written during the installation process. …
– but it's not clear whether that data is read from the selected volume when Disk Utility is run from a Recovery OS.
repairPermissions a plist is optional, but there's no interface to this in Disk Utility.
Thanks to commentary, I see that an OS X run of Disk Utility to repair permissions involves both
repair_packages. Here's a line from output of
03:06:31 access r/libexec/repair_packages 0.000019 diskmanageme
For another run, a little later,
macbookpro08-centrim:~ gjp22$ sudo fs_usage | grep "usr/sbin/diskutil" 03:09:24 open usr/sbin/diskutil 0.000021 repair_packa ^C macbookpro08-centrim:~ gjp22$
– at the same time,
macbookpro08-centrim:~ gjp22$ sudo execsnoop | grep 'diskutil\|repair_packages' 0 7963 7143 repair_packages ^C macbookpro08-centrim:~ gjp22$
This Apple article mentions Disk Utility but not permissions of files.