dfitoimd: decoding Intel M2FM floppy flux images (was Re: Intel 432 floppy flux images for decoding)
aek at bitsavers.org
Mon Aug 8 15:36:01 CDT 2016
On 8/8/16 1:33 PM, Al Kossow wrote:
> On 8/7/16 9:52 PM, Eric Smith wrote:
>> Of the four Intel M2FM disk images I've tried, which are single-sided
>> 77 track 52 sector 128 byte, for a total of 4004 sectors, I get 3990,
>> 3981, 4004, and 3976 sectors read apparently correctly (without CRC
>> error). That's more than 99.3%, which isn't good enough.
> is there any correlation between creation dates of the files and the failure rate?
> i'm wondering if the heads started to clog farther into the imaging session.
> he didn't say how often he cleaned the heads.
that is a big problem with acquisition not concurrent with analysis.
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