Hey everyone, I'm hoping for some help/suggestions relating to problems with a RAID1 array on my grandparents computer. I should preface this by saying I did not set up the array and I don't know much about RAID setups.
The array consists of 2 hard drives. It seems the (presumably) primary drive had an error about 2 years ago and it was no longer updated. In the meantime, they kept using the computer and updated to windows 10 from windows 7. A couple days ago the array stopped being bootable. My grandfather chose the option to recover the failed volume, which had the two year old data on it. The recovery worked but it seems the drive with the old data is the primary drive in the array and so the array boots to the 2 year old copy of their data/system. Neither of the "recovery volume options" - Enabling only recovery or master disk - did anything, they just said there was no backup disk. I would guess this is because they have different data and the array wants to rebuild itself. I can't figure out how or if I can change it to boot off of the other drive in the array. When it loads into windows (7) it starts trying to "rebuild" the updated drive with the old data, and I couldn't figure out how to pause it. It said the rebuild was about 2.2% complete when I decided to turn off the computer so it would stop.
I'm hoping there is some way to use the up to date drive.
Some possibilities:
1) Simply removing the drive with the outdated information, and seeing if it will return to using the updated drive. This might be complicated by the fact that the updated drive may have been overwritten by the 2.2% complete rebuild (This should be about 3gb or so of data). Will the system work normally if I disconnect a drive which is in the RAID array?
2) Using the option to reset disks to non-RAID, but I'm not sure if that will reset the drives, and I am not sure if the situation is changed by the fact that the drives contain different versions of the system.
3) Maybe there is a way I haven't found to change which drive in the array it boots from.
TL;DR: One drive in a RAID1 array stopped updating years ago. When the error was corrected the array wants to use the old data to rebuild onto the still functional, up-to-date drive. I am hoping to keep using the up-to-date drive instead of the drive with the old data. It rebuilt ~2% (about 3gb) of the old data onto the new drive before I turned it off.
Thanks in advance for any thoughts/input