> I tried doing it inside the Win7 VM using the disk management tools but > that didn't work either. Within windows, use diskpart from a command shell: C:\>diskpart Microsoft DiskPart version 6.3.9600 Copyright (C) 1999-2013 Microsoft Corporation. On computer: TEST DISKPART> rescan Please wait while DiskPart scans your configuration... DiskPart has finished scanning your configuration. DISKPART> lis dis Disk ### Status Size Free Dyn Gpt -------- ------------- ------- ------- --- --- Disk 0 Online 35 GB 3072 MB DISKPART> lis vol Volume ### Ltr Label Fs Type Size Status Info ---------- --- ----------- ----- ---------- ------- --------- -------- Volume 0 D DVD-ROM 0 B No Media Volume 1 C Windows NTFS Partition 31 GB Healthy System DISKPART> sel vol 1 Volume 1 is the selected volume. DISKPART> extend DiskPart successfully extended the volume. DISKPART> lis vol Volume ### Ltr Label Fs Type Size Status Info ---------- --- ----------- ----- ---------- ------- --------- -------- Volume 0 D DVD-ROM 0 B No Media * Volume 1 C Windows NTFS Partition 34 GB Healthy System DISKPART>