In the past I've had bootable DOS USB drives.=A0 It depends upon the partic= ular BIOS and USB stick you have as to how much success you might have.=A0 = When I was doing this think I had a 32 or 64 M USB stick.=A0 Haven't tried = the method on the newer ones.=A0 Here is a URL that I think got me started = back then.=A0 The BIOS takes care of the USB stuff in this case and DOS is = unaware that it's USB.=20 http://www.bootdisk.com/pendrive.htm --- On Tue, 8/31/10, Rich wrote: From: Rich Subject: OT DOS To: "Microcontroller discussion list - Public." Date: Tuesday, August 31, 2010, 10:27 AM Can I download DOS and BASIC to a Zip drive and run both from the zip drive= ? --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .