To change the number of drives connected
On the Tools menu, click Options.
Click the MGT/Datel Plus D tab.
Select Attach second disk drive (D2) to emulate two disk drives and click OK.
Note
G+DOS requires a system disk configured for two drives. You will need to re-run the configuration program if your system disk only expects one drive.
If the disk controller is currently busy, you may not be able to change the number of drives.