Unable To Change Permissions

Have you tried setting Ignore permissions on this drive on the external drive?

You'll find that setting in the Info Window for the DRIVE

Have you unlocked the Info window?

If ignore ownership on this volume is checked the settings in the permissions have no meaning, that's the whole point behind the checkbox.

So you are saying with the Ignore permissions on this volume checked you still can;t access the files on the drive? I'm not asking about modifying permissions I'm asking about file access.

Ok, as this drive was a Lion root drive and toy are trying to get into the old Users folders you're running into the ACL's set on the files.

Try this,as an Administrator go to the folder you are trying to get access to and open an Info window and unlock it. Now instead of trying to grant access to everyone grant specific access to yourself. That is add your name to the permissions list. (Use the + at the bottom of the window) and grant yourself r&w access.

If that doesn't work you will need to use the Terminal window to clear the ACL's from the folders. Post back if the above doesn't work and let me know how familiar you are with the Terminal and the command line.

regards

That is strange, are you certain you are logged into an Admin account? Try unmounting and then mounting the disk again.

If it still doenst work you will need to try this from the command line. You didn;t respond to my question regarding your familiarity with the Terminal and command line so not sure how basic I need to be.

Basically open a Terminal window, cd to the folder on the external drive you are trying to access and type

# sudo chmod -RN .

You'll be prompted for your password. Again this needs to be run from an admin account.

If any of this is unclear or you don;t feel comfortable doing it post back.