Also make sure your new disks are double density, 360K, not high density, 1.2M.
On Feb 17, 2018 10:24 PM, "Brian White" <[email protected]> wrote: The easiest way is using the backup program on the system disk. It's possible but I think it's probably more difficult with a modern pc. I don't think just any modern floppy controller chip can do it, and you need a 360K drive too, ideally, not the more common 1.2M drive. Then you also need special formatter software, which I don't know how available that is today, and don't know if it would work from dosbox or something. Might have to make a freedos bootable usb stick just to run the disk writing util. Steven Adolf has some notes on all that on club100 in the member uploads. It's much simpler to just use "BACKUP.SNG" in your case right from the system disk. You would boot the dvi normally, then go into basic and: RUN"0:FORMAT" Then follow the prompts to remove the system disk and put in a disk to be blanked and formatted. Then put the system disk back in and: NEW RUN"0:BACKUP.SNG" Then follow the prompts to switch back and forth putting the new disk in, then the system disk, then the new one again, etc, until it's over. Choose All when it asks All or System. I would definitely put tape over the write-protect notch on your one remaining working system disk before any of this! -- bkw On Feb 17, 2018 9:19 PM, "Randall Kindig" <[email protected]> wrote: > I will check that, Brian. Thanks for your help. > > My other question is around the boot disk. I was sent 2 boot disks with > the cable, but now only 1 seems to work. I’m worried now only having one > working disk. > > How do I back it up? Is there a way to do that with the DVI? Can I > create one in a different disk drive, like the drive in the TRS-80 Model 4P? > > thanks > > Randy > > On Feb 17, 2018, at 9:15 PM, Brian White <[email protected]> wrote: > > This sounds consistent with Fugu's idea about old capacitors. It sounds > like both dvi's are marginal, but one is slightly better than the other, > and one of your M100's is slightly better than the other, and so with the > two best ones combined, it just barely works, sometimes. > > I would check that voltage as he described and I expanded. > > On Feb 17, 2018 8:37 PM, "Randall Kindig" <[email protected]> > wrote: > >> SUCCESS! >> >> Per John’s suggestion (and was thinking the same thing when he suggested >> it) I now have a working system. I started trying different combinations >> of DVI/M100/cable (of which I have 2 each). >> >> DVI #2, M100 #2, Cable #2, no luck >> >> So I swapped out M100 #2 (32K) for M100 #1 (24K/REX), and it worked! >> >> It’s still a little finicky and doesn’t always work, but has worked >> multiple times now. I don’t know if there’s anything I can do to “tune” it >> so it’s more consistent, but I”m pumped that I finally got it to work. >> >> I had tried this M100/cable combination with DVI #1, so I’m wondering if >> there’s an issue with that DVI. There also must be an issue of some sort >> with M100 #1 as the current DVI/cable setup didn’t work with that machine, >> but does with the other. >> >> This sure seems like a finicky setup. I would love to see a modern DVI >> replacement, perhaps with SD card for disk and video output, that would >> take up far less desk space and be more robust. >> >> Thanks all! Any other suggestions for troubleshooting why the M100 (#2) >> doesn’t work with this and also why DVI #1 doesn’t work with either M100 >> would be much appreciated. >> >> Randy >> >> >> > On Feb 17, 2018, at 4:22 PM, Randy Kindig <[email protected]> >> wrote: >> > >> > I was just thinking the same thing John. It’s worth a try. >> > >> > Thanks >> > >> > Sent from my iPhone >> > >> >> On Feb 17, 2018, at 3:07 PM, John R. Hogerhuis <[email protected]> >> wrote: >> >> >> >> Btw it occurs to me that there are 16 permutations possible there. Not >> so high that you couldn’t do all 16 and see if you ever get different >> results in any of 16 if you haven’t already. >> >> >> >> — John. >> >> >
