[nmglug] A little off Linux but...

[BrianO'Keefe]

Sam Noble wrote:
> On Tue, 2007-05-29 at 10:57 -0600, BrianO'Keefe wrote:
>   
>> One partition is unreadable, at all, in OS X and no utility will
>> access
>> it. All 3 are mounted in Linux and I can access 2 of them and read the
>> data. The 3rd is visible and I can see the directories and in Nautilus
>> or Gnome-Commander they even show up as the various extensions. When I
>> try to open them they all return errors that the data is unreadable.
>> The permissions seem screwy and I've included terminal output below. I
>> don't know the UID 501 and the Group Dialout.
>>     
>
> We are all scared of your filesystems now Brian, they seem to have
> gremlins. But the 501,dialout ownership (and I think this was discussed
> last spring or so.) is probably just random mapping of the OSX numeric
> ownership into your ubuntu system.
>   
I'm scared too! This drive was partitioned only for OS X use and I only
mounted it in Ubuntu to see if the missing partition was there, and it
is. I haven't tried to write to this partition in Linux at all. It seems
odd for sure now that it doesn't sow up in OS X.
> If these are hfs+ partitions, 
they are
> I had a problem with an hfs partition
> being hosed when trying to mount it rw with the hpmount tool from the
> hfsplus package in Debian. I've suspected that possibly Apple makes
> 'improvements' to hfs+ and that hfsplus tools have to try and keep-up.
> (This suspicion is largely due to googled reports of success using the
> exact same mount procedure that hosed a file system for me :)
> Fortunately for me I had no use for the hfs+ partition so I didn't cry
> for very long.
>
> So offhand I'd probably recommend moving everything to a friendlier file
> system and not trying to write to the hfs+ file system, but of course
> that's just one data point. Plus since you have space issues you may not
> want to copy it all, and if 'System' and 'System Folder' are the OSX
> install then it's probably not very useful anywhere but in OSX?
>   
Except that I can't copy, or otherwise move the data on the 3rd
partition in Linux without errors that kill the attempts. Of course I
can't do it in OS X because the partition doesn't even show up. Maybe
it's hosed too!
>
>   
>> Any idea if I can change the permissions to me and thereby access the
>> data?
>>     
>
> Potential wonkiness aside, it looks like it. Also you should be able to
> access these files as root without changing their permissions.
>   
I can see the files either as root or me but they cannot be accessed in
either without getting error messages. In Nautilus the icons are correct
and look OK, the dates, sizes, etc. are fine too but they do not open.
These aren't permission denied errors. In nautilus they morph into text
files as opposed to PDF, for instance, and in Gnome-Commander as root I
get an "Unable to open file (error3)".
Trying to copy gives an "Unable to copy" error (as root).
I'll try changing the permissions after I get a response (hopefully). I
know it's weird but it's what I've got!
Thanks,
Brian
>   
>> Thanks for any and all help! 
>>     
>
>
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