See below. Hopefully inline works. I'm not shouting, just using caps. Rich
Sent from Verizon/AOL Mobile Mail On Wednesday, August 9, 2017, Chuck Guzis via cctalk <cctalk@classiccmp.org> wrote: On 08/09/2017 09:52 AM, Richard Cini via cctalk wrote: > It's funny -- I didn't see the original reply from Bill to this > message. > > I am aware of the track differences and I thought Dos would format > it but just slam the head for the last three tracks. No such luck. It > actually complains about the disk from the beginning. > > The Qume 242 is a DSDD drive in case that was asked in the original > thread, and should work in this situation. I'll try again--it doesn't matter if the Qume 242 (I've got one) is a DSDD drive if you're using SS media. Peek inside the drive and you'll see that there are *two* index sensors--one for single-sided and the other for double-sided media. Unless you've got a hole punch handy, you can't format single-sided media to use both sides. YES I KNOW. I HAVE BOTH KINDS OF MEDIA. RIGHT NOW USING 3M DSDD MEDIA. Okay, a DOS format is more than a simple IMD-type format, which does little more than instruct the FDC to write a bunch of E5-filled sectors and headers. OK, DIDNT KNOW THAT. A DOS format also writes a boot sector, FAT and root directory. If most late versions of DOS don't see a valid boot sector, you'll get a "General Failure" error. If you use IMD to format the disk, use the "Analyze" option to verify what you've got. UNDERSTAND WHAT DOS WRITES. I WILL SEE WHAT ACTUALLY GETS WRITTEN. USING ANALYZE. INTERESTINGLY IMD CLAIMS NOT TO BE ABLE TO READ ONE OF THE DISKS THATS TO BE IMAGED -- AN 8" MDSOS 2.0 DISK FROM A GAZELLE. I WOULD CONSIDER THE DISKS IN AN UNKNOWN CONDITION. CHICKEN AND EGG. THESE ARE ORIGINAL SCP DISKS SO I DONT WANT TO EXPERIMENT MUCH ON THEM. I hope I've been clear--lately, I tend to assume too much. "DON'T ASSUME..." AS THEY SAY ON TV. I'M OK WITH THE ADDITIONAL CLARITY. SINCE YOU HAVE A WORKING 242, WOULD YOU MIND CONFIRMING THE JUMPER SETTINGS FOR ME? JUST TRYING TO ELIMINATE AS MANY POTENTIAL ERROR POINTS. Thanks all. --Chuck
