Do you actully want to hide it or is making what is on
it not accessible enough ?
With NTFS we set permissions that control what accounts
can get at and do what, if anything, with what is in a partition.
For example, if you have a partition at F:\ that is not where
Windows is installed, and you want this to be private to the
account named Joe and no other account, at cmd prompt issue
cacls f:\ /t /g Joe:F
For full syntax of cacls you can at cmd prompt issue
cacls /?
This can also be done in the Security dialog in the properties
of the partition root node. For Home edition this must be done
in a safe mode boot in order to have the Security dialog.