Resizing an IDE virtual disk

1. Remove the IDE vmdk from the VM
2. Edit the “vmdk” file (can be found under cd /vmfs/volumes/<datastore_name>/<vm_name>/)
3. Change ddb.adapterType from “ide” to “lsilogic”
4. Add the IDE vmdk to the VM
5. Change the size of the disk
6. Remove the IDE vmdk from the VM
7. Edit the “vmdk” file 
8. Change ddb.adapterType from “lsilogic” to “ide”
9. Add the IDE vmdk to the VM
10. Power on the VM and “extend” the partition within Windows 7

Thanks for Duncan Epping's blog.