Raid 1 Volume Gone after bios update,

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Parrish-sa

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Apr 28, 2014
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Raid 1 Volume Gone after bios update, I have a gigabyte ga-z87m motherboard.

I update the bios a few weeks ago, and it reset my bios to ide mode.

My windows 7 wouldnt boot. So i changed it back to raid mode and windows booted, So I didnt pay much attention to it.

I now noticed that if i enter raid mode cntl+i there is no raid volume anymore? It is obviously booting of the one disk.

How can I repair this raid 1 without loosing my data?

I cant even make it a software raid in windows as the 2nd disk says invalid and I cant do anything to it?


2 * 3tb segate hdd in raid 1 for c drive?
Windows 7 Professional 64bit
Gigabye z87m motherbaord
 
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VincentP

Splendid
Oct 18, 2013
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If you care about the installation, back it up to an external drive before doing anything to the RAID configuration. Acronis is a good tool for backing up a drive like this (byte by byte, including the MBR or GPT rather than just a file backup). Ideally, boot off a CD to do this rather than trying to install Acronis in Windows. This way you know that the Acronis boot disk recognises your raid array and a backup with Windows shut down is always more reliable.
If you don't mind reinstalling Windows and other applications, just back up the files you want to keep to an external drive.

Once you have your backup, the raid configuration should recognise the extra disk as foreign and be able to overwrite its configuration. If this isn't working, you could try booting with the disk disconnected and then shut down and plug it back in again.
 
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Parrish-sa

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Apr 28, 2014
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I cant afford to reinstall windows. Its a new server isntall all cofigured correctly. The issue is that when I boot into cnt+i it doesnt recognize the disks as part of a raid. Its as if I have plugged in two new drives? So I have the option to create a new raid 1 volume, But I have a feeling that will clean my disks. Issue with byte to byte backup is these drives are 3tb so they will take really long, and I dont have annother 3tb drive to backup to.
 
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cozmium

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Sep 29, 2011
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The problem is the time you have left it. You needed to enter the raid utility with ctrl-i and recreate the array exactly as it was, then repair the MBR. You don't lose any data.The array will want to rebuild, and since it's a boot drive it could easily break your windows install. This is why you should always have a seperate boot/OS drive.
 
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VincentP

Splendid
Oct 18, 2013
4,105
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RAID is a great technology for minimising down time in servers. Don't imagine though that it gives you any real security for data loss. Backups are important. RAID means you can lose one or more hard drives without data loss (depending on the RAID configuration). They offer no protection though if the RAID controller fails.

With proper hardware RAID solutions you can take the drives and plug them into an identical RAID controller to recover your data, providing the data integrity is OK. The solutions you get on desktop motherboards are little more than software RAID and they aren't robust to most failures (or even BIOS updates apparently).

All I can say is, back it up before you touch it. It's up to you of course but don't be surprised if you lose the drive contents when trying to reconfigure the array.
 
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