To navigate to another drive, type the drive letter, followed by: For example, if you want to change the drive from C: to D: you would type: d, then press Enter on your keyboard. To change the drive, you can obtain the following book: Writing DOS Device Drivers in C. Phillip M. Adams, Clovis L. Tondo · 13-970864-2. As for DOS versions, I don't see why older versions wouldn't work on newer versions of DOS. I've never seen an old DOS driver that wouldn't work on a much newer version of DOS: Say hello to your hardware In other words, talk to your hardware Once basic information is known about the hardware , then it's time to talk to the hardware. At this point, you. Device drivers operate in kernel mode, so writing, testing, and debugging drivers can be a tricky task. Drivers should always be well tested before being installed. Because device drivers do not operate in user mode, the user mode libraries kernel32.dll, user32.dll, wingdi.dll, and msvcrt.dll are not available to a device driver. All you need is the recovery CD iso for the program you downloaded. Inside you will find a floppy disk image named dos. img. Open it and look in the ntfs4dos folder. ndos.exe 164 KB, is the executable and the readme file will tell you what you need to run it. Well done. New drivers must be written in C. Rust support is planned, but it is still very experimental. If a properly licensed driver already exists and is written in C, it may be acceptable to port it to Fuchsia rather than implementing a new version in C. Please contact Graphics-dev fuchsia.dev before making this decision. How to Change Drive in MS- DOS and Windows Command Line. To change the drive letter in MS-DOS, type the drive letter followed by a colon. For example, if you want to switch to the floppy disk drive, you would type a: at the prompt. Below is a list of common drive letters and their corresponding devices.