Bios - Sata Hard Drive Error - JBOD problem

By deepblue222 ·
I have the following 2Gb external USB hard drive:

I transported the drive between home and my office (very cold weather here) and may have left the drive in the cold for a few hours. I then brought it in and let it warm up, before attempting to connect it. Once it was connected, the PC showed no signs of recognizing that the USB had been connected. The external drive case fan was running, and I was able to use a known good USB cable and tried other USB ports to verify that cabling wasn't the issue.

Because the warranty was already void, I decided to open the enclosure and take a look. The drives were seated properly, and everything seemed to be in order. I then removed the drives and placed them into my computer to check each drive individually. One drive was recognized by the bios, but the second drive produced an error:


I inspected the bios and was not able to determine much else about the problem as the drive wasn't listed. The drive in question isn't clicking, or making any kind of unusual noise, and it appears to be spinning up. From what I've been able to surmise, the two drives are configured in a JBOD configuration in this product, and from what I've read, JBOD seems to just "extend" the two drives into one virtual partition - and supposedly one half of the original data / file structure should be present on the working drive.

I've booted up Windows XP, and I can see the working drive is there - though I will not allow XP to "initialize" it because I don't want to jeopardize the data and I don't have 100% confidence that I know exactly how JBOD works. From my understanding, if this were a non-RAID 5 or recoverable stripe set, no usable data would be available from either drive without the other, but supposedly this is not the case with JBOD.

I've tried various recovery utilities - most of which recognize the working half of the JBOD duo, but so far, nothing seems to see the unrecognized drive.

Does anyone have any advice on what might have gone wrong here, and what I might do to recover my data?

PS - Ironically enough, I just ordered a 2 Gb internal drive from Newegg to back up this external drive to keep this disaster from happening, and it was while the new drive was shipping that this occurred.

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Well I'm not sure what to suggest here other than

by OH Smeg Moderator In reply to Bios - Sata Hard Drive Er ...

Using the actual HDD Makers Testing Utility to test the Drive. As you didn't mention who made the drive itself that is suspect go here and click on the Drive Makers Name to download the correct Testing Utility.


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Read more on your JBOD issue here...

by Peconet Tietokoneet In reply to Bios - Sata Hard Drive Er ...,,sid5_gci343350,00.html
If you had information (data) on these disks and it is very valuable to you then you will need to send BOTH the drives to a Data recovery firm. In future have the drives as Raid1 (mirroring) instead as JBOD.

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