[Hidden-tech] lacie extreme disk error messages

[Jeffrey Peck]

You should be able to recover data with a tool such a DriveGenius or  
Disk Warrior, but you if you do not already have access to these  
tools, you might want to first try running fsck.

To run fsck (copied from here: http://www.gballard.net/macrant/osx_troubleshooting.html)
	• Shut Down Mac completely, Restart your Mac.
	• Immediately press and hold down the Command and S keys until text  
begins to scroll on screen. In a few more seconds, the Unix command  
line prompt (%).
	• Type fsck –y (fsck space minus y).
	• Press Return key.
	• Text will start updating the progress...if there is damage, the  
final line will say ***** FILE SYSTEM WAS MODIFIED *****.
	• If you see that message, REPEAT Steps 3 and 4 again and again until  
that message no longer appears. Having to run fsck more than once is  
normal, because the first run's repairs may uncover additional problems.
	• The end should read: "The volume <name of disk> appears to be OK."
	• Then type "reboot", then press Return to boot back off the hard  
drive.

Note, for the third step, you would need to specify the drive  (i.e.  
fsck –y /Volumes/MyDrive).  If it is not mounting, this may be an  
issue...

Perhaps somebody here has more experience with fsck who can confirm  
another method for accessing the drive?

- Jeff


On Feb 25, 2010, at 11:23 PM, Tom Adams ~ Reelife Productions &  
Folktography wrote:

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> area.
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>
>
> Hello,
>
> looks like my 1TB lacie backup "extreme disk" has finally decided to  
> play with my sanity. I tried runnin' apple's disk utility to no  
> avail. The discs icon shows up in the left panel but will not mount-  
> here are the messages I got:
> =========
> Verify and Repair volume “Time Machine _BU”
> Checking Journaled HFS Plus volume.
> Detected a case-sensitive catalog.
> Checking Extents Overflow file.
> Invalid leaf record count
> (It should be 4500 instead of 4505)
> Checking Catalog file.
>
> >>Disk Utility stopped repairing “Time Machine _BU” because the  
> following error was encountered:
> Filesystem verify or repair failed.
>
> (It should be 4500 instead of 4505)
> Checking Catalog file.
> Invalid node structure
> Volume check failed.
> Error: Filesystem verify or repair failed.
> =============
>
> anyone have any insight or suggestions about what I should do next.  
> I know that Lacie has had problems with the "extreme disks" power  
> cords not giving the units enough juice but this doesn't seem  
> related at all.
>
> trying not to wig out too much...but I do happen to have a A LOT of  
> important stuff on this drive. Help?
>
>
>
> Regards,
>
> Tom Adams
> ~~~~~~~~~~~~~~~
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