[RESEND] Re: [CoCo] 720kb vs 1.4mb 3.5" disks

[John Collyer]

Yes it'll do:

  80 Tracks single side      -  command  "/T80"
  80 Tracks double sides   -  command  "/T80 /D"
  80 Tacks "/2" back side  -  command  "/2 /T80"

John Collyer

  ----- Original Message ----- 
  From: Dennis Bathory-Kitsz 
  To: coco at maltedmedia.com 
  Sent: Friday, December 12, 2003 11:31 AM
  Subject: [RESEND] Re: [CoCo] 720kb vs 1.4mb 3.5" disks


  At 07:54 AM 12/11/2003 -0600, you wrote:

    All of this discussion has prompted me to set up an FD-502 unit with a 1.44MB floppy drive as Drive 0, and move the original 5.25" DS drive in the top position of the cabinet and set it to drive 1.
    Using 720K floppy disks (not 1.44MB with the hole covered) on my Linux box, I transferred the latest NitrOS-9 image over to the floppy disk, then inserted the floppy into the 1.44MB drive on the CoCo. It booted fine, and seems to be reading/writing to the floppy with no problems.


  The Linux drive... is it a 1.44m or 720k drive? Is the 1.44mb drive on the CoCo acting like a 720k because of the FD502?

  I wasn't sure if you have your CoCo hacked to handle 1.44m 3.5's or if it's reading 720k 3.5's you made using your PC's 1.44m drive but with 720k disks. Whew this can be a tounge twister sometimes.



    I also formatted a 720K floppy disk in /d0, again with no problems.
    As a test, I have a 1.44MB floppy from a bundle that I bought. These floppies are new and were probably manufactured in the last year. I'll cover up the hi-density hole, format it and see how reliable it will be.
    All of this has prompted me to add a 720K disk image to the NitrOS-9 distribution build. So the next release of NitrOS-9 will include a 720K disk image in addition to the two 360K disk images already there.


  Nice. Will dskini.exe write such a .dsk image to a real 720k (3.5") floppy correctly?


  ----------
  Roger Taylor





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