I have a floppy disk that I have been able to access until recently. Now I get an error message that says the a: drive is not accessible no ID mark address was found on the floppy disk, but a system check shows the drive is okay & just before this started I was able to access the diskette.

Sound like your floppy disk drive has failed. However, if you have a vacum that will blow, try blowing air into the disk drive in case it has some thread or other debris in it. Good Luck!

You may have to enable 'A' drive through the bios. Depending on the bios, you need to hit F1 or F2 or F10 at initial start up. You can hit all three at once and get into the bios. Then navigate your way through the bios to find where to enable and disable drives.

If your not computer savvy like the address might be holding you up or go into bios to see if it is being reconized(floppy drive) you can take them to a computer tech shop and they will transfer them for you

try a data recivery software


http://www.jufsoft.com/badcopy/floppy_recovery.asp?rid=google&kid=gc1603

Try changing the stting switch on the disk. I think it is for formatting or something like that. Try moving it to the opposite direction and then put it in your computer again ;) Good Luck

floppies are very much vulnerable to viruses. there might be an issue with the computer getting affected. i strongly recommend that you run a antivirus program before proceeding further. good luck!

if im correct, you havent installed a floppy drive yet...
while the comp is booting press esc (on some comps its F10 it should say on the screen) and access the boot sequence..in there there is a list of boot items...they always list floppy drive as the first boot drive in case you need to recover your comp...remove floppy drive from your boot list making sure that your hardrive (C) is first drive to boot.
After you get your comp set up, you may want to change that sequence in case you ever have problems with your HDD

add a comment if you need more help

Solution 1.
Try using the Installation CD or Utiltity CD that came with your drive to format it.

If theres a Utility CD then install it on your computer and try formating it from the utility application.

If the windows error messages still persist then try formating it with the windows default options or NTFS option.

http://support.microsoft.com/default.aspx?scid=kb;en-us;811840

Hmnmm.... try getting a new IDE ribbon cord, your existing one may be broken.