teledisk problem

system A: is say, I > >tried a few versions, the latest I have is 2.16, all behave the same.

Sorry. Yes, I am trying to create the .TD0 image from a 5.25" floppy quad density (SSDD80/10). This is pure DOS (6.22) no Windows in site anywhere. Out of the 7 disks I've attempted, 3 of them have displayed this error. The help for teledisk says that this error is displayed when the drive door is open or the disk is not inserted (obviously not the case). I've tried unseasting/reseating the disk several times but once it gets into this state there seems to be no recovery. Like I say, I have seen cases where teledisk gets read errors during the .TD0 creation, but it usually will just report them in its status window and keep on chugging. Not so in this case. I've tried each of the suspect disks 3 times with the same results so I don't think it is my drive being flakey, but unfortunately it is the only PC 5.25 I currently have running so I can't confirm that. As mentioned I have not had problems with other diskettes on this drive. A couple of things I have thought of trying just for informational purposes is (1) when teledisk reports the error, insert one of the successfully imaged disks into the drive just to see if it really is a track 80 specific issue with the disk or is teledisk has just gotten into some bad unrecoverable state somehow (2) try another disk copy on the real machine and if that succeeds without complaint try generating the .TD0 from the duplicated disk.