Level 1

15 points

unmount external disk in terminal

I cannot unmount a drive (or mount it) in disk utility. Repair permissions is not even an option. In the terminal, I type
sudo diskutil repairPermissions /dev/disk1
and get this message:
Error encountered attempting to verify/repair permissions on disk1: Permissions are not enabled on the disk (-9973)

How do I enable permissions? I think if I can repair permissions, I might be able to unmount this disk.

iMac intel core duo/macbook pro intel core 2 dou, Mac OS X (10.5)

Posted on Nov 13, 2007 2:32 PM

29 replies

bannonto Author

Level 1

15 points

Dec 16, 2007 8:43 AM in response to Mark Jalbert

It says mount is successfull but still get this info:

[Unknown-00-14-51-e6-3d-65:~] bannonto% diskutil info /dev/disk2
Device Identifier: disk2
Device Node: /dev/disk2
Part Of Whole: disk2
Device / Media Name: Century Nikoichi Media

Volume Name:
Mount Point:

Partition Type: Apple partitionscheme
Bootable: Not bootable
Media Type: Generic
Protocol: USB
SMART Status: Not Supported

Total Size: 465.8 Gi (500118700032 B) (976794336 512-byte blocks)
Free Space: 0.0 B (0 B) (0 512-byte blocks)

Read Only: No
Ejectable: Yes
Whole: Yes
Internal: No
OS 9 Drivers: No
Low Level Format: Not Supported

bannonto Author

Level 1

15 points

Feb 6, 2008 1:58 PM in response to bannonto

HEy- It's been awhile, but I finally got everything working again. I downloaded a demo of a disk recovery tool. After scanning my hd I plugged it back into my airport extreme, and I was able to connect to it again. Yeah me. Everything is working fine now. I will not use it as TimeMachine again.

baltwo

Level 9

62,386 points

Nov 15, 2007 4:37 PM in response to bannonto

Do a google search for *error 9958* which has a number of hits, including this one: http://discussions.apple.com/thread.jspa?messageID=5572412

Nov 13, 2007 2:42 PM in response to bannonto

diskutil unmountDisk /dev/disk1 doesn't work?

I wonder if you have files/locks open on the disk? You can always use the force option but at the risk of losing data...

Nov 13, 2007 2:52 PM in response to bannonto

How do I enable permissions?

sudo vsdbutil -a /Volumes/<hard drive name>.

Replace <hard drive name> with the name of the your disk.

bannonto Author

Level 1

15 points

Nov 13, 2007 2:59 PM in response to Steve Hodson

I have tried both force and regular unmount, to no success.

bannonto Author

Level 1

15 points

Nov 13, 2007 3:24 PM in response to Mark Jalbert

I tried this:

sudo vsdbutil -a/dev/disk1/Apple_HFS Fantom

Nothing happens. I then try to repair permission again, and get same response.

bannonto Author

Level 1

15 points

Nov 13, 2007 4:45 PM in response to Steve Hodson

As root, I am still getting same message.

bannonto Author

Level 1

15 points

Nov 15, 2007 4:07 PM in response to Mark Jalbert

Thank you,

Now I can't verify disk. I keep on getting this message.

Error encountered attempting to verify/repair disk1: Unrecognized filesystem (-9958)

bannonto Author

Level 1

15 points

Nov 18, 2007 6:57 AM in response to Mark Jalbert

Ok, I did this-

What next?

Nov 18, 2007 7:02 AM in response to bannonto

What next?

Test!

check the permissions on the drive Fantom.
Try to write a file to the drive.
Try opening the drive to view its contents.
Try to unmount the drive with Disk Utility.

bannonto Author

Level 1

15 points

Nov 18, 2007 7:15 AM in response to Mark Jalbert

The disk will not mount or unmount in disk utility. When I verify, it says "Error: Filesystem verify or repair failed."

bannonto Author

Level 1

15 points

Nov 18, 2007 7:17 AM in response to bannonto

in terminal, I can mount and unmount, but not sure how to see disk

baltwo

Level 9

62,386 points

Nov 20, 2007 6:40 PM in response to bannonto

From the earlier posts, what do you get for?

*sudo vsdbutil -c /Volumes/Fantom*

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unmount external disk in terminal