To move WSUS updates folder to another drive need to follow below steps:
1) Goto drive where need to copy wsus
2) Create folders "wsus content" and "wsus logfiles" folders
3) Run cmd as Administrator
4) Type: pushd "C:\Program Files\Update Services\Tools"
5) Type: wsusutil.exe.
6) Type: wsusutil. exe movecontent "x:\wsus content" "x:\wsus logfiles\logfilename"
7) All done. Wait until message will appear
PS: if Following error will appear:
Fatal Error: The WSUS synchronization service (WsusService) cannot be stopped.
Then Goto Services.msc and stop WsusService manually and give full access for "NT Authority\Network Service" account to root folder of the logfiles