I am using nagios to monitor one of my Windows Servers. Everything works fine except for monitoring the free disk space of an hdd:
service_description G:\ Drive Space
check_command check_nt!USEDDISKSPACE!-l g -w 80 -c 90
Nagios reports: Free disk space : Invalid drive .
Drive G: is valid on the server. I am using the same definition for other disk drives on the server and everything works fine.
Any ideas on the cause of the problem?