A year ago or so I put a second HDD into an existing machine and installed Windows SBS onto it. The Windows Installer assigned f: to the new boot partition. The other day the machine reported that the HDD with SBS on it was in danger of imminent failure. So I backed up the OS and replaced the HDD with a new one. Microsoft's instructions for restoring the OS in this situation include, among other things, the caution that one should install the new OS onto the same boot partition as the old one. For me that would be f:. But the Windows Installer in now absolutely refusing to assign f: to any partition. The original drive has two partitions, assigned c: and d:. It has a CD/DVD drive. It has the new drive in it. When I go to install SBS, the installer initially wanted to assign d: to the new partition. With the partitions on the old drive being c: and e:. If I create two partitions on the new drive, you would think the next assigned letter would be f:, but, no, it jumps over f: and assigns g:. fF apparently belongs to the CD/DVD drive and won't be reassigned. I seem to be stuck with the new boot partition being drive d: or g: or higher. All of which means that I can't do a full OS restore, because the ntbackup won't restore fully to non-f:. Any ideas?