I have a 500Gb drive with two partitions. I added a recordings dir to the D: partition but can't figure out how to totally disable the C: directory. Also it seems that Media Center allocates an amount of the drive space to a scratch recording of live to air TV so you cah pause rewind etc. Can I force this to be only on one partition. The reason is I am putting in a second HD of 1.5 Tb :-) I'd rather have all the media on this drive only and the scratch area perhaps on this drive but on a smaller seperate partition. Don't know if any of this is possible.
I can delete or resize the D: partitions media storage in 10Gb chunks from the UI but I think I can only resize the C: and not remove it. I haven't seen options to seperate the stored media and scratch media areas.
you could try editing the following registry key to move the live tv temp cache folder:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Service\Video\Tuners\DVR\IO\Writer\DVRDirectory = "C:\Users\Public\Recorded TV\TempRec\"