I started out with a 10Gb virtual disk and easily filled it.

I put off the task of reinstalling, because I really didn’t want to talk to the off-shore guy at Microsoft.

Today, I finally researched the problem and made a commitment to increasing my disk space.

I followed GusGan’s idea, and can confirm, that the solution really is two lines of text simple.

(follow this VirtualBox forums discussion)

This applies to all VirtualBox Install 2.0 and up

Create a new Virtual Machine in VirtualBox. Make sure that you set hit General -> Advanced and duplicate your original machine’s settings here. For me, the key was setting the IDE controller type to PIIX3. In fact it was CRUCIAL (Blue Screen of Death CRUCIAL).

Next, I went to my Original machine and added the new drive as primary slave (Hard Disks -> + )

Boot the old machine, load FireFox, and download Acronis Easy Migrate 15 day trial (Hint: This is buy-able good just as a backup utility. You can send your backups to an external USB disk, then swap disks if you have a failure. Once a week runs are all most people need.). I did try TrueImage, but it looked consistently.

Run Easy Migrate. Next, Next, Next, Reboot and that’s about it.

Boot your new expanded drive, and when happy delete, your old cramped virtual machine.

I can tell you, from experience, that the PIIX3/4 setting will frustrate you to anger, tears and finally drink. Don’t overlook it.