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Windows 7: Raid 5 became unallocated.

14 Apr 2015   #11
Golden
Microsoft MVP

Windows 7 Ult. x64
 
 

A RAID5 is comprised of a minimum of 3 hard disks....your D: is a single hard disk. How could it have been a RAID5?


My System SpecsSystem Spec
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14 Apr 2015   #12
dloydc

Windows 7 64 Professional
 
 

Asus motherboard Raid 5 with three 2 TB drives. Why it shows as one drive is a good question. When it is looked at with other software it shows as a 2+1 Raid 5.
My System SpecsSystem Spec
14 Apr 2015   #13
Golden
Microsoft MVP

Windows 7 Ult. x64
 
 

What software? Please provide a screen capture image showing this Asus setup.
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15 Apr 2015   #14
Golden
Microsoft MVP

Windows 7 Ult. x64
 
 

Actually, prompted by Steve, I've had a look at my system, and my 2 x disk RAID0 shows as a single physical disk in Disk Management....so I think I am incorrect about your RAID5 setup.

I thought that since the volume shows as RAW, we should see the 3 disks shows as separate entities in Disk Management, but apparently not.

Please follow jumanji's advise to see whether its possible to recover the data.
My System SpecsSystem Spec
15 Apr 2015   #15
jumanji

Windows 7 Home Premium 32 bit
 
 

After seeing post #13 yesterday night (ET) I composed this post but put it in the backburner and decided to wait for OP's response to that post.

"@Golden, I don't know much about RAID 3 but from what little I read about RAID 3 when I entered this thread, it does require minimum three drives out of which one is for parity and the other two only are for data and I have been presuming that these two data drives would show up as one drive just like in RAID 0. So I was not surprised when the OP's RAID drive - two 2TB drives - showing as a single 3725.16 GB drive ( 2X2TB). The Parity drive may not show up in Windows Disk management or so I have assumed. Should the two data drives show up as individual drives?

(On my Desktop in India which uses Gigabyte motherboard software RAID which I had configured as RAID 0 the two 250GB drives show up as one single drive of 500GB.Of course I had to inject Gigabyte Raid driver during the Windows installation process to recognize it as a single drive. In the early days when I was using Paragon Recovery Disk to image that system drive I had to, during the booting process, inject the Gigabyte raid drivers for it to show the raid drive as one single drive. If I do not, then those two will show up as individual drives and I cannot image the drive. Some other partitioning software when run from a bootable disk also will show the RAID drive as two single drives and there was no provision to inject the raid driver and obviously I could not use those for manipulating the five partitions in my raid drive, one of which is the system partition.) "

Now that the issue is resolved , and clarity has been achieved thanks to Steve's ( I presume essenbe) prompt to Golden I would add this.

I normally do not use my system raid drive for my experiments on HDD but on the one occasion I did, something went wrong and my system became unbootable. I panicked because it was a raid drive and I was unsure whether the normal restoration process we use for single non-raid disks would work to restore the lost MBR. Anyway I had to restore it to get my system back and so I ran TestDisk for DOS which I had ready on a pendrive and wrote the MBR using it and my system came back alive.

From this episode I did learn, that on a raid configuration whether 2,3 or 10 drives showing as a single drive - which it should unless the raid is broken - we can use the same restore techniques that we use on single drives. And that is why I started off my intrusion in this thread with the statement " hmmm.....whether RAID or LAID (just for rhyme), I am of the opinion that either Partition Recovery Wizard or TestDisk should be able to write the lost/corrupted Partition Table if that is what has turned it RAW."

And yes, the OP should go ahead with Partition Recovery using Partititon Wizard as ordained in that post #8 but stop with posting the screenshot of the partitions shown. Only after examination by all other experts involved in this thread - including essenbe ,who I am sure is watching this thread - agree to go ahead to write the partition table - if found. I am keeping my fingers crossed at the moment. Nothing is certain till we get those screenshots asked for in post#8.
My System SpecsSystem Spec
15 Apr 2015   #16
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

Me as a person that knows less than nothing about Raid. I'm learning by following this thread.
----------------------------

I do have a question tho.

@dloydc

Because as we are finding out; Raid can be very tricky thing to do and keep working as it should, why are you using Raid and do you really need to use Raid?
---------------------------

Is their possibly a better method that can be used to suite dloydc needs and desires without using Raid??
My System SpecsSystem Spec
15 Apr 2015   #17
Golden
Microsoft MVP

Windows 7 Ult. x64
 
 

RAID isn't tricky to keep going....that's just a myth, in part propagated on these forums.

The most important thing now is for the OP to follow jumanji's advice in an attempt to get data recovered.
My System SpecsSystem Spec
15 Apr 2015   #18
dloydc

Windows 7 64 Professional
 
 

No it doesn't show anything.


Attached Thumbnails
Raid 5 became unallocated.-partition-04152015.png  
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15 Apr 2015   #19
dloydc

Windows 7 64 Professional
 
 

In answer to post #13. That is done in bios not windows. As any other raid set up is done using the motherboard hardware. As for why I was using a raid, so that this would not happen. Well, losing a hard drive in a raid 5 should be recoverable by replacing the bad hard drive without losing data. All three of the drives checked out fine using different hard drive tests. I have recovered the files. But, they are just files in folders of like files. Not the folders that they were in. At 2.6 tb, that is a lot of files to sort into the folders that they should be in. And, forget about the programs that were on the drives. Recovery software is only good for data.
My System SpecsSystem Spec
15 Apr 2015   #20
dloydc

Windows 7 64 Professional
 
 

Here is a software showing D: as a Raid 5


Attached Thumbnails
Raid 5 became unallocated.-raid.png  
My System SpecsSystem Spec
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 Raid 5 became unallocated.




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