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External HD access settings
http://www.powerbookmedic.com/forum/viewtopic.php?f=11&t=1951
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Author:  jbhanson [ Wed Sep 24, 2008 4:41 pm ]
Post subject:  External HD access settings

I have run across an access issue with an old HD from my Pismo that I replaced and mounted in an external USB case so that I could use it as a backup volume. My question is perhaps more related to OS X settings than it is hardware - I hope.

I stupidly set the access setting on this drive for "no access" (I think). Don't ask why - just messing around to see what would happen. Now I can't find a way to change the setting so that I can even see the drive. It shows up in my disk utility program, but nowhere else. I can verify it there, and mount and unmount and see the physical details of the drive like size and type, but not any of the data. In fact disk utility says it contains 0 bytes. It should read around 10 gig.

It will also show up as a possible boot volume when I restart with the option key, but it won't actually boot if I select it.

One other detail - between the time I changed the setting and the next time I tried to access it, I upgraded from Panther to Tiger.

Anyone have any suggestions about how to reset the access? Your help will be appreciated.

Author:  justin-pbmedic [ Thu Sep 25, 2008 8:29 am ]
Post subject:  Re: External HD access settings

Will the First Aid section in Disk Utility let you repair the disk or repair the permissions?

Author:  jbhanson [ Thu Sep 25, 2008 12:10 pm ]
Post subject:  Re: External HD access settings

It did allow me to verify the disk, and the report at the end of the process was that there were no problems. Hence I didn' run the "Repair" command. The "Verify Permissions" and "Repair Permissions" choices were grayed out. I notice that the same conditions are true on the flash drive that I have in the computer now.

JLB

Author:  justin-pbmedic [ Thu Sep 25, 2008 1:56 pm ]
Post subject:  Re: External HD access settings

Does it list a partition underneath the drive in the panel on the left? If it does, click on that first before trying repair permissions. If it doesn't list a partition, there is a problem with the drive most likely and you'll need to repartition and reinstall if it lets you.

Author:  jbhanson [ Thu Sep 25, 2008 5:00 pm ]
Post subject:  Re: External HD access settings

Justin:

It does seem to list a partition.

Author:  jbhanson [ Thu Sep 25, 2008 5:21 pm ]
Post subject:  Re: External HD access settings

Justin:

Guess what! The Repair command did run. It returned this message:

Verify and Repair disk “*********”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.
Checking volume bitmap.
Checking volume information.
The volume ******* appears to be OK.
Mounting Disk

1 HFS volume checked
No repairs were necessary

The Verify & Repair Permissions commands are still unavailable.

Author:  justin-pbmedic [ Tue Sep 30, 2008 11:04 am ]
Post subject:  Re: External HD access settings

Yea, the repair permissions is what you want. I'm not really sure how to overcome that problem besides formatting and reinstalling from scratch.

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