[Coco] Read Coco floppies in my PC

[Chad H]

Didn't Mitsubishi make the Zero's use by the kamikazees?  J/k

Bill <cwgordon at carolina.rr.com> wrote:

>Mine are Mitsubishi MF504C-318MG drives.
>
>-----Original Message-----
>From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
>Behalf Of Chad H
>Sent: Saturday, March 31, 2012 12:15 AM
>To: CoCoList for Color Computer Enthusiasts
>Subject: Re: [Coco] Read Coco floppies in my PC
>
>What OS are you using?  What 1.b drive model?   Only time I get errors on
>good media in my 98 box is when I mess upand try to format a 360k disk as
>1.2mb
>
>Michael Graham <mkgraham at gmx.com> wrote:
>
>>I'm not sure how you pulled that off.  When I write with my 1.2mb drive 
>>(with format /f:360), I always get 'Sector not found' errors reading 
>>them with a 360k drive.  The other way around works, though, at least 
>>until I write to the disk with the 1.2mb drive, then the disk becomes 
>>unreadable.  I'm pretty sure it has to do with the fact that a 1.2mb 
>>drive head writes narrower tracks than a 360k drive.  I originally would 
>>have thought it was just something wrong with my drive, but I did a web 
>>search after noticing this and found other accounts and an explanation 
>>on a couple of websites.
>>
>>The same thing happens when I format a 720k floppy in a 1.44mb drive.  
>>The 1.44mb drive can read it, but a true 720k drive cannot.  That's why 
>>I have a 1.44mb drive hooked up to my PCjr as a second drive, even 
>>though I can only use it in 720k mode;  It makes file transfer much 
>>easier if I don't have to also write with a 720k drive.
>>
>>On 3/30/2012 9:53 PM, Chad H wrote:
>>> I have 9 360k pc-xt drives, all fully tested to read/write disks
>formatted by 1.2 mb drives without problems....?????
>>>
>>> Michael Graham<mkgraham at gmx.com>  wrote:
>>>
>>>> Just FYI, most double-density (360k) drives won't read double-density
>>>> disks written on high-density (1.2M) drives.  I tried this when I first
>>>> got my PCjr, and it didn't work, so I had to swap the 360k drive back
>>>> and forth between my PCjr and my old desktop machine until I could
>>>> source another 360k drive.  I couldn't get disks written in a 1.2M drive
>>>> to read on my CoCo, either.  However, disks written with a 360k drive
>>>> will read back just fine on a 1.2M drive, as long as you don't try to
>>>> write to them.
>>>>
>>>> On 3/30/2012 8:20 PM, Bill wrote:
>>>>> The drives I just got are 1.2Mb, and I have tried several times to
>format a
>>>>> 360K disk, but for some reason it won't let me. I type in the command
>format
>>>>> b: /f:360 (which SHOULD work), but it gives me an error message.
>>>>>
>>>>> Has ANYONE been successful formatting a 360K disk in XP with a  1.2Mb
>drive?
>>>>>
>>>>> Thanks
>>>>>
>>>>>
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