🚀 go-pugleaf

In article <1992Dec17.183812.7317@pony.Ingres.COM> bonobo@Ingres.COM (David Victor) writes:
>I just bought a new 486SX-25 clone system, and I'm pretty happy with it, 
>except for one thing: 
>
>I do a "DIR B:" (B: is my 3.5" floppy drive) on disk #1, and get a valid 
>file listing.
>
>I take out disk #1 and replace it with disk #2, which is known to have
>different files on it (verified on 2 other machines).
>
>I do a "DIR B:" again, and I get the *same* file listing as I had on my
>disk #1!
>
>If I reboot the machine and do a "DIR B:" on disk #2, I see the correct
>listing of the contents of disk #2 (which again supports my contention
>that disk #1 and disk #2 have different files on them).
>
>In other words, my directory listing is the same for every disk I insert
>into drive B: forever, until I reboot.  Can anyone tell me what's going
>on?  Thanks for any help!!
>
>-David Victor

Here, I just give you the experience I had with my old 286. Hope it helps.

I had the same problem with the 1.2 MB floppy drive after about 4 years
of usage. As I took down the floppy drive, I found dust covered the photo-
sensor which is used to detect whether a diskette is placed in the drive.
When the sensor is covered with dust, the computer always thinks that
there is a diskette in the floppy drive, and cannot detect the change of
diskette. I fixed this problem by cleaning the sensing path with a cotton
swab.

Since you mention that your PC is new, probably it's not dust problem.
Maybe the sensor is not functioning well. Try cleaning the sensor to
see if things improve. (There are three photo-sensors in the drive,
if you are not sure which one is for detecting diskette change, clean
them all.) If this should solve your problem, I guess you have a used
floppy drive in your new PC.

-- Chien-Chung Chen