161 reputation
126
bio website andrewjohnson.me.uk
location United Kingdom
age
visits member for 4 years, 5 months
seen Oct 13 '12 at 10:36

Apr
25
comment Corrupt file record segments on new drive
@Psycogeek Not on a UPS. I live in a city and power-cuts almost never happen. It is plugged into a domestic-quality surge suppressor though.
Apr
25
comment Corrupt file record segments on new drive
@Randolph Any tips for how to test them. I have a digital multimeter but thats all.
Oct
9
comment Reading old 5.25" floppies
I tried the jumper on position 1 but then the drive access light didn't even light when I tried to access the B: drive. When I moved it back to position 2 the light comes on again.
Oct
9
comment Reading old 5.25" floppies
@FisacoLabs I have the 5.25" as B before the twist and the 3.5" as A: after the twist, and the jumper on the 5.25" set to the second position. Are you saying it (maybe) should be on the first position because the cable does the drive select?
Oct
9
comment Reading old 5.25" floppies
Thanks for the reply! there are actually two floppies. The 5.25" drive has four jumpers, which I assume are the drive select. Since I'm using it as drive B: I moved the jumper to the second position and plugged it into the FDD cable before the twist. The existing 3.5" drive is A: and is connected to the FDD cable after the cable twist. Is this use of the cable correct? I tried all the other jumper positions but they just resulted in floppy controller errors at power-up, so I assume that the second jumper position is correct. How would I recognise "terminating resistors"?
Oct
9
comment Reading old 5.25" floppies
@sawdust The new cable that I bought has four connectors. A 3.5" connector and 5.25" connector before the cable twist, and a 3.5" connector and 5.25" connector after the twist. I have the 3.25" drive (B:) connected before the wist and the 3.5" (A:) connected after the twist. Is this correct?
Oct
9
comment Reading old 5.25" floppies
One of the disks contains emails (yes, I had internet access in 1989) and a couple of the others contain some image processing software that I wrote back then. Nothing that I haven't been able to survive without for the last 22 years, but I'm just curious...
Oct
9
comment Reading old 5.25" floppies
After booting in dos, fdisk only gives me information about the hard drive. NT reports the floppies as having an unknown file system.
Oct
9
comment Reading old 5.25" floppies
Thanks! I can't hear any stepper motors when I try to access the disk - I'd expect the hear them moving the heads as they try to locate the tracks. Unfortunately no-one I know has a working 5.25 drive.
Oct
9
comment Reading old 5.25" floppies
Thanks Psycogeek. I forgot to mention that they are DOS disks, so they are 40 track MFM.
Oct
9
comment Reading old 5.25" floppies
Also, when I did try reversing the cable none of the drives were recognised by the bios.
Oct
9
comment Reading old 5.25" floppies
Thanks kif. I'm sure its the right way around because the 3.5" drive on the same cable works ok.