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Invalid B-tree node size

I have an external drive for my MAC that I can't seem to get to.  When I run a repair via Disk Utility I get the "Invalid B-tree node size" error.  And Volume Check Failed.

So disk untility isn't working.  I tried to run fsck_hfs -r /dev/disk1  but that's not working either.

Any idea how I can get this drive up??  I don't have DiskWarrior or TechTools handy.

Thanks,
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Rizznut
Asked:
Rizznut
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1 Solution
 
strungCommented:
Depends on whether you need the data on it. If you don't, then simply reformat the drive.

If you need the data, recover it with DataRescue III ( http://www.prosofteng.com/products/data_rescue.php ) then reformat.
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RizznutAuthor Commented:
I do need the data.  I found a copy of DiskWarrior 4.2, but it's too old for the Mac version of the drive.  Which I don't get since it's just an external drive.
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strungCommented:
Your safest solution is to recover the data with DataRescue III and reformat.
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RizznutAuthor Commented:
now it's not showing up on my Mac, nor on my Windows or Linux box.  I hear it spinning but it's not being recognized.  Did it just die??
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strungCommented:
If the disk corruption is bad enough, it won't mount. DataRescue III will probably still recover the data if the disk still spins. The longer you play around with it, the worse the corruption will get and the less likely you will be able to recover anything.

If you value your data, get DataRescue III or something similar now.

DR III has a trial download that will list all the recoverable files and let you recover one file free of charge.
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RizznutAuthor Commented:
Will it find the drive even if it's not mounting??  I can see it on my Linux box but it's telling me something about not having permission.  I can't seem to create a folder there either.  Can it be encrypted?  Does DR III recover from encrypted drives too??
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strungCommented:
DR will find the drive even if it has not mounted.

Do you remember how the drive is formatted? If it is formatted FAT32, then you can try to recover data using Windows or Linux tools. If it was formatted in Mac format, using Windows or Linux tools might do further damage.

On the assumption it is Mac formatted, you should not do anything more before you try the trial version of DataRescue.
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RizznutAuthor Commented:
It's formatted in HSF+.  Got DiskRescue 3 and it's working.  Thanks.
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