Can’t extend volume

diskmanagementwindows-server-2008

Can't extend volume under Server 2008 SP2. Please help?

Disk 1 has 512 GB taken, but 512 GB unallocated. The extend volume wizard doesn't allow me to click Next with additional space.

Disk Management

Extend Volume Wizard

Best Answer

I'd try making the volume just a tad smaller than the maximum disk size. Note the discrepancy between highlighted value and maximum size. See if that works to restore the grayed-out menu.