Is the C drive an intermediate for importing media?

Hey majorgeeks! So to explain what I mean, I was importing video from a camera onto windows 7. My drive is split up into 3 partitions C, D, and E. I didn't have enough room on my C drive so i chose to import the videos to E. But as the videos were importing, I noticed the memory on my C drive going down. But then after the first video was done, the memory shot back up to what it was before and then started going down again when the second video was importing. Why would it do this and is there any way to not have this happen? Thanks.

 

Memory or hard drive space? The OS is likely caching the file on c: in some temp file or dat or page file until it is done then copying it to the destination.. I don't know of a way to change that outside maybe moving the pagefile, if that is what it is using.

 

Hard drive space. I had page filing for other drives set between 10 and 20k MB. I see though. I tried to remove page filing for C but then it said there would be errors and windows may not be able to find a problem for the solution. Why would caching the file be important if it's just a copy/paste procedure?

 

This is just speculation, but the difference in speeds of the devices maybe? the resources available to the OS to handle said streams..'buffering'