Re: [Info-mtools] Trouble accessing 2M formatted disks

[Yuri van Oers]

Hi,

On 09/17/12 11:53, Ignatios Souvatzis wrote:
> Hi,
> 
> On Sun, Sep 16, 2012 at 11:59:29PM +0200, Yuri van Oers wrote:
>>
>> Hi,
>>
>> These last few days I've been trying to access some old floppy disks
>> I found, formatted with 2M. I was pleased to read that 2M is
>> supported under Linux, but my efforts have been unsuccessful so far.
>>
>> My understanding is that 2M support should be transparant. However, I get:
>>
>> $ mdir
>> Can't set disk parameters for A: Operation not permitted
>> Cannot initialize 'A:'
> 
> Not knowing the details of Linux wrt. this question, I have two questions:
> 
> a) can you run mdir as root on this disk?

The exact same error appears when running mdir as root.

> b) can you read the disk with dd as root?

# dd if=/dev/fd0 of=2m.img
dd: reading `/dev/fd0': Input/output error
16+0 records in
16+0 records out
8192 bytes (8.2 kB) copied, 17.4015 s, 0.5 kB/s

All six 2M disks I've tried give err out at the exact same number of bytes.

I've also tried using /dev/fd0u1920, /dev/fd0u1840, /dev/fd1760,
/dev/fd0u1722 and /dev/fd0u1743. The last two give same error as above,
all the rest give up at 0 bytes.


Thanks & regards,
Yuri