Mirrored RAID issue

[Hodsocks]

I have been working on a pc with 2 x 320GB SATA drives in a mirrored RAID configuration, the mobo is an ASUS M4A79XTD EVO. I was working inside the case, when I had finished I started up the pc but received a critical message about the RAID missing a drive, when I looked inside the case I noticed that I must have knocked one of the power supplies to one drive off, I reconnected it but on boot up I have the same message. The BIOS is detecting all drives and once in windows 7 all drives are detected but as 2 seperate drives.
How do I get these drives back to the original RAID configuration?
I have checked through the RAID software but I can't find anything allowing me to repair the RAID.

 

[Cota]

Go to your BIOS and re-configure it, check your manual formore info.

 

[Tmagic650]

With RAID enabled in the bios, there should be a screen during boot up allowing you to press control-i or something like that to re-configure the RAID Array

 

[DelJo63]

under no circumstance, elect to reformat either HDD or the Array itself - -
that is catastrophic to the existing data.

hopefully, you have a backup and if so, you can recover the data if the above reformat is required

 

[Tmagic650]

The RAID utility (outside the bios) might just allow rejoining the missing hard drive to the array without formatting

 

[DelJo63]

YES (the better S/W does), but the onboard software (as apposed to the Raid-PCI cards) seldomly does

 

[Tmagic650]

I played with my striped RAID array. I wanted a 1TB array, but I had to add an additional 450GB drive to my 2 500GB drives to get to 1TB due to disk overhead. I do think I had to reformat the entire array to add a drive though

 

[Hodsocks]

The system is happily booting into windows but then you would expect it being a mirrored setup as both drives should be identical. The one thing I noticed in Disc Managent in control panel is that although both drives appear to be identical the second drive has a small 70MB partition that the other one doesn't have, could this be the cause of confusion, if I get windows to increase the partition size to absorb this would the RAID work OK?

 

[Tmagic650]

All 3 of my RAID drives show as one drive, 1.09TB in Disk Management. No separate drives exist