Lacie 750gb not mounting on power book G4

[2KR8]

Hello,
I’m having a problem with a 2month old LaCie 750GB 3.5" Hard Disk.
It has recently stopped appearing on the desk top of my power book g4 (OSX 10.4)

In Disk Utility - cannot mount or repair the drive & get this:
Verify and Repair disk “disk2s6”
Checking HFS Plus volume.
Invalid B-tree node size
Volume check failed.

Error: The underlying task reported failure on exit


1 HFS volume checked
1 volume could not be repaired because of an error


In System Profiler it also see it:

LaCie Hard Drive USB:
Capacity: 698.64 GB
Removable Media: Yes
Detachable Drive: Yes
BSD Name: disk3
Version: 0.01
Bus Power (mA): 500
Speed: Up to 480 Mb/sec
Manufacturer: LaCie
OS9 Drivers: Yes
Product ID: 0x1018
Serial Number: xxxxxxxxxxxxxx
S.M.A.R.T. status: Not Supported
Vendor ID: xxxxx


Does someone know how can I fix this & not lose all the data that's on it? Or retrieve the data?

Many thanks, 2KR8

[djackmac]

Could just possibly be the directory structure of the drive is corrupt from sudden power downs or not always being ejected properly. Diskwarrior (http://www.alsoft.com/DiskWarrior/) is going to be your best bet at this point.

[ElDiabloConCaca]

Might also want to give the power supply a once-over to ensure it's working properly. LaCie is notorious for power supplies that crap out after X amount of months, which can cause the symptoms you describe (drive doesn't mount, etc.).

[2KR8]

ho djackmac & ElDiablo,
thanks for the tips.
ElDiablo - what do you mean exactly by 'give the power supply a once-over '? - the blue light flashes, etc...

thanks, 2KR8

[ElDiabloConCaca]

What I mean is ensure that the power supply is fully functional. If you have electronic testing equipment (volt-o-meters and what-have-you), be sure it's outputting the proper voltage and amperage.

LaCie power supplies are notorious for going bad and requiring replacements. A faulty power supply could be one of a few causes of what you're experiencing.