With this Adapter Board for Amiga 500,

You can Convert A DF1 External Drive 

To A Bootable DF0 Drive!

-No need to break Amiga cases any more, to fit Gotek/Hxc drive internally!

-Boot from internal or External drive with one switch!

Works with any Drive: Floppy Drive, Gotek, HxC!

Using the Switch Provided, you can have:

- Internal Drive as DF0 and External Drive as DF1 (Normal position)

- External Drive as DF0, Internal Drive disabled (Switched position)

*Important note: There is an easy "Trick" where you can use both drives in switched position, 

it's tested ,and works with Workbench, Xcopy utility, and some games too: 

Boot normally from internal drive, and after disk initialization, change to "Switched position". 

That way you can use both External drive as DF0 and internal as DF1! 

Fully tested using an Amiga 500 with 1.3 Kickstart!