Hello, We just noticed a very strange problem. Two of our Win2000 SP4 Servers now have both letters C: and F: pointing to the same partition on a software-mirrored disk0. Part of the registry references (to DLLs and other files) point to files using C:\ the other (smaller) part points using F:\ In Disk Manager we see only F:. Obviously, it does not let us change it back to C: What is going on? How did this happen? Anyone know what to do? Thanks in advance! Av