I've made a clean re-install of Windows 8.1 x64 today. I decided to check the disk defragmentation schedule. To my surprise,
dfrgui.exe did not list drive
C:, showing only my external hard drive (drive
D:). It shows this:
Funny thing is, if I plug the external HDD out,
dfrgui doesn't start. At all.
I've seen a similar issue discussed here, however, in that case, the asker's problem was resolved by repairing some corrupted files, which
SFC /SCANNOW doesn't find on my computer.
What could be the problem with
dfrgui? And what can I do to fix it?