On 22 Feb 2010, at 09:42, Rich Mellor wrote:

> Tony Firshman wrote:
>> Daniele Terdina wrote, On 22/02/10 00:20:
>> 
>> Daniele/
>>>> I am trying to use a QDOS formatted 1440 sector QL disk under Qemulator.
>>>>    
>>>  Hi Tony, to use floppy disks reliably, please upgrade to Q-emuLator 2.5 
>>> (uninstall your current version from Control Panel, then install 2.5 from 
>>> http://www.terdina.net/ql/winql.html, your existing registration code will 
>>> continue to work), it has very important fixes related to floppy disks (a 
>>> major bug was introduced after version 2.0, and fixed in 2.5).
>>> If you still have problems or crashes with version 2.5, I'll be happy to 
>>> investigate.
>>> 
>>> 
>>> In general, trying to format disks on the PC (with the emulator) like you 
>>> did is the recommended strategy... in my experience it's easier for QL disk 
>>> drives to read floppy disks freshly formatted on the PC than it is for the 
>>> PC drive to read old QL disks formatted by Miracle/Cumana/etc. cards...
>>>  
>> Yes I guessed that.  It may simply be that the Miracle disks I have are 
>> 720k, or only managing to format to 720k.
>> Will try the new version.
>> 
>>> 
>>> 
>>> 
>>> 
>>>> This formatted to something like 2760/2880.
>>>> Odd as the USB drive and disk are HD.
>>>>    
>>> 
>>> 
>>> This part looks fine to me. A HD floppy contains 1.4MB of data, equivalent 
>>> to 2880 512-byte sectors.
>>> 
>>> A DD floppy contains 720KB of data, or 1440 sectors;
>>>  
>> Ah silly - of course.  It is so long since I used QL floppy disks (8-)#
>> 
>> Thanks for the instant response,
>> 
>> Tony
>> 
> I have had some real problems since using a USB disk drive - Q-emuLator 
> normally fails to format DD disks, but so does QPC2 - QPC2 seems to check the 
> disk and then take ages to start formatting it as though it times out!  
> Q-emuLator seems to cope better with a disk which has been previously PC 
> formatted - whereas trying to reformat a QL disk is nigh impossible.

I have just successfully formatted a new DD disk using QPC2 on Windows XP 
running on VMware with OS Snow Leopard. It took about a minute.

George
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