It is Windows disk mirroring (in software) on 2 dynamic disks. Not sure if that is the same as RAID1...

You mean it doesn't matter which disk I select for "break mirror", will disk#1 still keep...

If I select "break mirror" on a mirrored disk in disk manager, will that disk get a new drive letter assigned, or will it keep the original drive letter?
(I want disk#1 to keep the original "D:" as...