HELP! Both Raid Drives "not readable"

Started Apr 2, 2013 | Discussions thread
webfrasse
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Re: HELP! Both Raid Drives "not readable"
In reply to Stu 5, Apr 4, 2013

Stu 5 wrote:

webfrasse wrote:

Stu 5 wrote:

webfrasse wrote:

Stu 5 wrote:

Joe Tam wrote:

Hi,

I have a Newertech Guardian Maxiumus with 2x2TB drives in a RAID 1 on Macbook Pro 2011 13" running 10.8.4. I turned on the drive tonight and got the dreaded "The disk you inserted was not readable by this computer." I saw the "rebuild" light blink but the drive indicators did not go red to indicate which drive was dead.

I tried Disk Utility but couldn't see the drives.

I removed the drives and put them in a Black X USB docking station but the same error showed up.

I purchased Disk Warrior but DW doesn't even see the drive.

I finally ran Data Rescue from Prosoft and it has sees the drive in quickscan mode and allowing me to copy files file by file/folder by tolder to a secondary 2 TB drive.

Unfortunately it is going to take about 40 hours and I'm just wondering how Data Rescue is working and DW does not even see the drive.

Do you know if there is any way to get DW to see the drive and get back the data faster?

Do you know what causes this error? Could it be the Newertech Drive? I have the drive in a Sentry Fire safe and I was moving it earlier tonight on the ground. I hope that didn't cause any static buildup. Or maybe the Newertech drive sucks and caused an electric spike.

I'm just trying to get to the bottom of this.

Disk Warrior is not a data recovery program and if you try to use it as one it can actually do more damage than you started with. It is OK at what it does but NEVER use it to try to recover data in this way as you could risk all the data on the drive. What your doing at the moment with Data Recovery is the way to go.

Hmmm...do you know what DW does? You can definitely use it to recover data. I have done it. DW will scan your drive and build a new Catalog file for all the files it can find on the drive. It also compares it to the current catalog that may be partially broken or have numerous other errors. It will then, without writing to the drive, mount the new Catalog and it will look as you have two drives. Using the new Catalog you can browse the drive and copy the files from it to another drive (that is the data rescue part). When you have done that, you can ask DW to try to replace the old catalog with the new one. If that works you're good. If that fails you have more serious problems with the drive and you're happy you copied the files from the temporary mounted catalog.

Data Rescue works differently and is also a tool that should be in your toolbox. I have used that to with great success. Sounds like it's the tool to use in this case.

What brand are the drives inside the unit?

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Mikael

Well aware what it does and this is the one time you don't use it. Any decent data recovery company will tell you the damage it can do though when used for this type of data loss. It can corrupt the data futher. It did on a friends hard drive when it was used. A bad data recovery company will tell you it can be used for this.

DW will only read the drive if it can and won't write anything unless you decide to. The temporary rebuilt desktop is not written anywhere. Just shows what DW could recover. As I also said, in this case DW isn't the tool obviously as it can't see the drive...duh.

Not sure what you did to your friends computer...further damage or what?

Maybe you should also read up on what DW actually does, http://www.alsoft.com/diskwarrior/

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Mikael

First of all I did not use DW on the computer. Someone else did. The I.T department of a college. As soon as I knew that had been used I knew it would be an issue. It took a data recovery company to recover the data and when I say data recovery company I don't mean a computer shop pretending to be one. All this company does is recover data and their clients are worldwide. As soon as they got it they asked what had been used to try to recover data and then added 'please don't say DW'. Also even the local Apple store says there are times when you use DW and times when you don't and if you do it can make things worse. I am well aware of what DW does but you might not be or rather what can happen when it should have not been used?

I'm well aware of what DW does, and what DR and Drive Genius from the same vendor. I work in IT and have personal experience of all these tools in data recovery and fixing failed drives. Not hearsay, first hand personal experience.

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Mikael

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