this link must help you

thank you

this link must help you

thank you

If you try to repair a disk that cannot be unmounted, the repair will appear to start, but then stop as Disk Utility displays this message: "Repairing disk failed with error. Could not unmount disk."

If you look in the Console (/Applications/Utilities/), you will see an entry like this:

Verify and Repair disk “Storage”

The disk “Storage” could not be unmounted

Could not unmount disk for verification

Repairing disk failed with error. Could not unmount disk
In some rare situations, your computer might not respond for several seconds.

If you cannot determine which files are open on the disk that you
want to verify or repair, restart your computer and then mount the disk
again, or start up from your Mac OS X Install DVD or CD to repair.


If you try to repair a disk that cannot be unmounted, the repair will appear to start, but then stop as Disk Utility displays this message: "Repairing disk failed with error. Could not unmount disk."
If you look in the Console (/Applications/Utilities/), you will see an entry like this:
Verify and Repair disk “Storage”
The disk “Storage” could not be unmounted
Could not unmount disk for verification
Repairing disk failed with error. Could not unmount disk In some rare situations, your computer might not respond for several seconds.
If you cannot determine which files are open on the disk that you want to verify or repair, restart your computer and then mount the disk again, or start up from your Mac OS X Install DVD or CD to repair.

Try first unplugging power from computer and Lacie disk for ten minutes, if the computer is a laptop or a Mac notebook, then also remove the battery at same times.

If it does not work then try uninstalling and reinstalling disk utilit, Check if your lacie is displayed as external disk in your computer resources. If you are using Windows XP, for example, check if you have a new external disk in My Computer, in this case the problem is only with Lacie software, as the computer is seeing the disk.

If the disk is accessed through a network also disable all firewall software to test the disk.

If you have a different computer test also the Lacie on the other computer, to see if the external hard drive is faulty.




Try first unplugging power from computer and Lacie disk for ten minutes, if the computer is a laptop or a Mac notebook, then also remove the battery at same times.

If it does not work then try uninstalling and reinstalling disk utilit, Check if your lacie is displayed as external disk in your computer resources. If you are using Windows XP, for example, check if you have a new external disk in My Computer, in this case the problem is only with Lacie software, as the computer is seeing the disk.

If the disk is accessed through a network also disable all firewall software to test the disk.

If you have a different computer test also the Lacie on the other computer, to see if the external hard drive is faulty.

Hi, when Lacie does a kind of tickling noise and it does not start, that means the disk is faulty. Testing it on a different computers also confirmed the diagnosys.
When this happens you can fix it only by replacing the internal hard drive, all >LaCie - External Hard Drives

Hi, when Lacie does a kind of tickling noise and it does not start, that means the disk is faulty. Testing it on a different computers also confirmed the diagnosys.
When this happens you can fix it only by replacing the internal hard drive, all >LaCie - External Hard Drives