I'm running Windows 7 x64 and Intel Matrix Storage Console v8.9 on an Asus motherboard with an ICH10R Southbridge. I have five SATA drives on this system, two of which are configured as a RAID 1. Those two are running out of space, so I decided to replace them with larger drives. The plan was to format one of the new drives and then swap it for one of the old drives and let the RAID rebuild itself, which went fine. Then I was going to do the same with the second drive and expand the volume on the rebuilt array. The problem is, Matrix Storage Console won't let me rebuild to the second new drive. When I tell it to, it gives me a long list of "possible" reasons why it can't, including that the new drive may contain system files, may be too small, there may have been an error or SMART event on the drive (it previously passed CHKDSK with no problems), and other things I don't remember (sorry for not taking a screen grab of the message). The only things visible on it are pagefile.sys, the $RECYCLE.BIN folder, and the System Volume Information folder, none of which I'm able to delete; Windows also won't let me format the drive, claiming the drive is in use by another program, but I can't find anything that's using it (I close everything in the foreground). For now, I've rebuilt the array with one of the old drives, but I'd like to get it working with the remaining new drive. Any tips? Thanks.
Edited to include CHKDSK.