Explorer not showing correct disk space avail

[Guest gbug]

Hi all, im running Windows 2003 R2 server, with all service packs. The

problem i have is a disk on this server is showin 80gb of 90gb being used,

but when you view disk manager, it shows the true size, which is only 30 gb

of disk being used.

Is there something i can do to display the true size, as this is affecting

quota's we have set on this server.

Cheers!