Disk Permissions..

fraggle101

fraggle101

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My Mac Pro suffered a power failure a few days ago, now it wont let me Read/Write to anything else other that the Mac HD.. All other internal drives i can only Read!! so i cant even import photos now!!

Iv tried the Repair Disk Permissions in Disk Utilities.. :bang:

Can anyone help?? PLEASE!!! :gag:
 
Change the permissions back? Right click-Get Info-Change Permissions (check that it does it recursively).
 
In 'Get Info' it only says "You Can Only Read" and thats it! no little padlock or anything you can change!...
 
Open the Terminal (utility folder), type in:

sudo chmod -R 755 FILE/FOLDERYOUWANTTOMODIFY

This makes it read/write for everybody so be careful to change back to normal settings once done.
 
i did that earlier! nothing happened except that it said it was an unknown command or something like that..

Has the last bit GOT to be in caps??
 
OK, so iv got a drive called Media Drive, how exactly would i have to write the code?? sorry but im a complete newb with this stuff!!
 
Have you used the check and repair diskpermissions tool?
 
Is the padlock not right at the very bottom of the window? It is on mine and when I click on it then authenticate it allows me to change the permissions on the disks
 
bakedbeans said:
Tell me what the command 'mount' says.
Click to expand...

OK, Iv made bold the drives that are being a pain...

/dev/disk0s2 on / (hfs, local, journaled)
devfs on /dev (devfs, local)
fdesc on /dev (fdesc, union)
/dev/disk2s2 on /Volumes/Media Drive (hfs, local, journaled)
map -hosts on /net (autofs, automounted)
map auto_home on /home (autofs, automounted)
/dev/disk2s3 on /Volumes/Photo Drive (hfs, local, journaled)
/dev/disk3s1 on /Volumes/Untitled (ntfs, local, read-only, noowners)
/dev/disk1s1 on /Volumes/Big Dump (ntfs, local, read-only, noowners)
/dev/disk3s5 on /Volumes/EVOKE (msdos, asynchronous, local, noowners)
/dev/disk0s3 on /Volumes/Windows Drive (ntfs, local, read-only, noowners)


I hope this helps!! :thumbsdown:



Paulmack said:
Is the padlock not right at the very bottom of the window? It is on mine and when I click on it then authenticate it allows me to change the permissions on the disks
Click to expand...

Nope, its not there.. :thumbsdown:
 
The Mac Pro has a seriously good warranty. Go to apple website and check you warranty status, if you still have phone support then call Apple. I get support for 2 years on mine and Apple have always been very helpful
 
fraggle101 said:
OK, Iv made bold the drives that are being a pain...

/dev/disk0s2 on / (hfs, local, journaled)
devfs on /dev (devfs, local)
fdesc on /dev (fdesc, union)
/dev/disk2s2 on /Volumes/Media Drive (hfs, local, journaled)
map -hosts on /net (autofs, automounted)
map auto_home on /home (autofs, automounted)
/dev/disk2s3 on /Volumes/Photo Drive (hfs, local, journaled)
/dev/disk3s1 on /Volumes/Untitled (ntfs, local, read-only, noowners)
/dev/disk1s1 on /Volumes/Big Dump (ntfs, local, read-only, noowners)
/dev/disk3s5 on /Volumes/EVOKE (msdos, asynchronous, local, noowners)
/dev/disk0s3 on /Volumes/Windows Drive (ntfs, local, read-only, noowners)


I hope this helps!! :thumbsdown:





Nope, its not there.. :thumbsdown:
Click to expand...

Yes it does. I thought the disk affected was 'media drive'? Try the same commands with the disks affected.
 
I did that, i said Media drive as an example.. same thing though..

Im going to try Apple..

Ta for the help so far..

Phone support has expired so wont be ringing them..

Maybe i'll just do a reinstall!! i think it could do with it anyway...
 
They're NTFS drives which OS X can read, but not write to without assistance. Surprised no one else spotted that.

So...

What software were you originally using to allow you to write to the NTFS disks?

is it..
Paragon NTFS (which doesn't work under Snow Leopard btw, just in case you're running the Dev release)

Or
NTFS-3G with MacFuse (Which does work with SL)
 
If you can read them then pick a drive that has less data than the space on your main drive and copy it to a new directory. Re format the drive then copy another drives data onto it. re format that drive and copy over the last drive. reformat the last one and copy the first one back from the folder!

Often the simplest fix is the best. I am not sure I would trust any of the other drives after that so I would rather use them after being reformatted.
 
The problem with messing around with the permissions on every file is that it was clearly not a "permissions to every file" error. This happened instantly on a power failure. With this in mind I would give up and reformat them saving the data, just in case.
 
It would sound like a corrupted disk problem.
I believe that the mac is based loosely on linux.
The command
dmesg
in linux shows information on what has occurred. If there was a corruption on the disk, this might be shown here.
Try the command
mount -o remount,rw /dev/disk0s3
In linux, that would attempt a temporary re-mount as read-write
 
coldpenguin said:
It would sound like a corrupted disk problem.
I believe that the mac is based loosely on linux.
The command
dmesg
in linux shows information on what has occurred. If there was a corruption on the disk, this might be shown here.
Try the command
mount -o remount,rw /dev/disk0s3
In linux, that would attempt a temporary re-mount as read-write
Click to expand...

Nah, it's XNU OS X is based on. It was also certified as a UNIX OS some time ago (Mac OS X Leopard on Intel, not other versions).
That said, what coldpenguin wrote could work, but it could have unexpected results if the syntax differs on OS X.
mount --help
should give you a hint.
 
bakedbeans said:
Open the Terminal (utility folder), type in:

sudo chmod -R 755 FILE/FOLDERYOUWANTTOMODIFY

This makes it read/write for everybody so be careful to change back to normal settings once done.
Click to expand...

Not quite, 755 is RWXR-XR-X which means the owner has Read/Write/Execute and the group and others have only Read and Execute :wave:

If the disk is mounted as read-only you wont be able to change the perms anyway
 
Guys, thanks so much for the help, iv re-formatted the main drive and reinstalled the OS..

The drive is still read only, i do remember installing a file to allow me to read NTFS drives as i had a bootcamp partition for windows.. i had the drives formatted in NTFS so i could put large files on them.. im going to reformat them for osx as im no longer using windows..
 
Glad to hear it, half of all catastrophic software faults I have come across on Macs are due to a problem running a PC emulator :shrug:

I think it is something in Windows getting its own back!
 
lol.. i think you may be right!

What is best to install to read/write to NTFS drives?? just so i can use them untill iv managed to re-format them??
 
fraggle101 said:
lol.. i think you may be right!

What is best to install to read/write to NTFS drives?? just so i can use them untill iv managed to re-format them??
Click to expand...

Why do you need to write to them?

MacOS will read NTFS drives, just copy the contents onto a fresh MacOS drive. It you REALLY do need to read an NTFS drive then I prefer to stick it into an extrenal box plugged into a PC and read it using Windows over the network. I have had no end of problems with NTFS reading software and do not trust ANY of the current crop. If Snow Leopard could only have had read/write access!
 
Im just moving stuff about so i can format my drives..

Should it be in Mac OS Extended Journaled??
 
fraggle101 said:
Im just moving stuff about so i can format my drives..

Should it be in Mac OS Extended Journaled??
Click to expand...

Yes and make sure you DONT select case sensitive or lots of things will stop working such as CS!!!
 
Now that wouldnt do!! lol.. thats all i want to use! lol..

Thanks again for the help.. :thumbs:
 
Its NEARLY sorted! iv put the files elsewhere and am trying to format it as Mac OS, but it keeps failing! it works just fine if i format it as Ms Dos!! im getting it to Zero out data just in case that helps..
 
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