Use as few drive letters as possible in Windows?

mountvol /N
mountvol /R
# diskpart: automount disable
# diskpart: automount scrub
# diskpart: SAN POLICY=OfflineAll

Get-Partition|where-object {$_.DiskNumber -gt 0}|%{
write-host ('mkdir "c:\mount\Volume{0}"' -f $_.guid);
write-host ('mountvol "c:\mount\Volume{0}" "\\?\Volume{1}"' -f $_.guid,$_.guid);
}