Cy Burnot wrote:
What is this C:\boot?

It contains one folder, macrium, that contains two folders, drivers and
WA10Kfiles

Drivers ahs three folders -- disk (empty), network and USB (empty) --
and two files -- Macrium.oem (empty) and SearchPaths.txt.

WA10files has three folders -- fwfiles, media and mount (empty) -- and a
file called DrisversHash.bin

c:\boot takes up about 300MB. Do I need to keep it? Can I move it to
another drive?

Best guess.

http://www.macrium.com/webhelp/Windows_Boot_Menu.asp

The folder would be intended for supporting an additional
item in a Windows Boot Manager menu. It's effectively
the Macrium boot CD, but stored in C:\boot instead,
and needing a hook in the boot menu, for a user to be
able to use it.

Paul