Register FAQ / Rules Forum Spy Search Today's Posts Mark Forums Read
Go Back   MacRumors Forums > Apple Hardware > Desktops > Mac Pro

Reply
 
Thread Tools Search this Thread Display Modes
Old Dec 19, 2012, 01:54 PM   #1
camner
macrumors member
 
Join Date: Jun 2009
Permissions issue after rebuild of system

I'm doing a clean install of Mountain Lion and after the initial install I noticed that all of my disk volumes (and their contents) [except for my new ML boot volume] showed the owner as "Fetching...." (though I still had access because the "staff" group has read/write access).

Doing a search, I learned that this means that the new system doesn't recognize the user id (UID) of these files/folders.

I think I know why. In my old Snow Leopard system, I set up a second administrative user when I was troubleshooting a problem a while back, and just started using the new user (and eventually deleted the troublesome one).

So, the UID for my Snow Leopard user (which created all these files and folders on my other volumes, including my Time Machine volume) has UID = 502. The new ML user I set up has UID = 501. That's why when booted into ML all the owners are "Fetching..." because the new ML user doesn't recognize the old SL user with UID = 502.

The question is how to fix this. I see three options:

1. Don't worry about it, as I have access. But I have read that having the OS constantly trying to figure out the owner of files can be a drag on system speed

2. Use chown to change all the ownership of all my files on the various volumes (or do it through the Finder or Batchmod to apply to enclosed folders). Perhaps I shouldn't be nervous about this, but somehow I don't like the idea of having to traverse the entire TM volume to change the owner of all the 8 million + files....

3. Set up a new administrative user on ML (that will presumably have UID=502) and delete the other user (with UID = 501)

[And yes, I did try repairing permissions with Disk Utility, but that doesn't affect volumes other than the boot volume, of course]

Any advice would be appreciated.
camner is offline   0 Reply With Quote
Old Dec 19, 2012, 02:02 PM   #2
chrfr
macrumors 68020
 
Join Date: Jul 2009
Quote:
Originally Posted by camner View Post
2. Use chown to change all the ownership of all my files on the various volumes (or do it through the Finder or Batchmod to apply to enclosed folders). Perhaps I shouldn't be nervous about this, but somehow I don't like the idea of having to traverse the entire TM volume to change the owner of all the 8 million + files...
I'd go with this if you're worried but I can't imagine things are perceptibly slower in any way. I would not mess with Time Machine permissions though.
chrfr is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Hardware > Desktops > Mac Pro

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
newsyslog - screwed up system.log permissions coltrane58 OS X Mavericks (10.9) 0 May 1, 2014 11:45 AM
Urgent Major permissions issue HELP blackjm75 Mac Basics and Help 1 Sep 13, 2013 08:33 AM
Help me rebuild my system please. brussell27 Mac mini 3 Apr 18, 2013 11:32 PM
Mac Mini: System Preferences won't open, Permissions corrupt on Admin account macpixy Mac OS X 10.7 Lion 0 Nov 27, 2012 10:09 AM
Granular System Permissions shadowfayre OS X 9 Aug 2, 2012 12:42 PM

Forum Jump

All times are GMT -5. The time now is 11:30 PM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC