I was wondering if I install programs in both C:\ drive and D:\ drive, are there separate system restore points for each disk?
For example if I run cleanmgr.exe I can select either C:\ or D:\ drive:

Beyond that, I have two different screens which allow me to clean up system restore and shadow copies.
One for C:\:

and one forD:\:

Is it true that one is cleaning up the shadow copies of C: while the other is cleaning up the shadow copies of D:,
Or is it true that they are pointing to the same thing?