Today I had to extend the partition of a Windows 2003 Server.
In the past I did this several times with diskpart:
diskpart.exe -> list volumes select volume [number of the partition to extend] extend volume size=[SIZE TO EXTEND in MB]
After doing this, diskpart and the Windows Disk Management show the extended size but Windows Explorer didn’t so. A colleague pointed a KB article to me which described this behaviour.
You have type in another diskpart command (brought with SP2 – otherwise there is a hotfix):
diskpart.exe select volume [number of the partition to extend] extend filesystem
Now the whole space could be seen in the Explorer, too.