Hi there -
I have an older but beloved P4P800-E Deluxe MB with 2 SATA hard drives configured as RAID1 on Intel ICH5R chipset. I guess, I did not think much about consequences when creating this configuration - I thought RAID1 will replace the need for data backups, but now I cannot find any information on how to restore a failed HD. I want to get rid of RAID. The Intel RAID Option ROM utility, provided to manage RAID volumes, has an option to 'Reset Disks to non-RAID'. However, it says that 'All data on the RAID drives will be lost!'
Can anyone advise how to do this without data loss?
Thank you for your help - Alex.

That board is a little dated and I do not have a manual for it handy (I can download one if need be). The general procedure for restoring a Raid1 is to replace the failed drive and then enter the RAID bios on boot and choose rebuild the array. If you can't find the instructions in your manual for this, let me know and I'll try to dig them up.

In general, RAID 1 as a backup solution is virtually worthless in the SATA world. I see very few successful recovery cases where a hard drive fails.