Re: [linux-minidisc] Differences between 1GB HiMD and Standard MD in HiMD-Format

[manner.moe@gmx.de]

>Betreff : Re: [linux-minidisc] Differences between 1GB HiMD and Standard MD in HiMD-Format
>Gesendet: 30.04.2010 00:54:45
>An : "manner.moe@gmx.de"
>Von: "Adrian Glaubitz <glaubitz@physik.fu-berlin.de>"

>----- Originale Nachricht -----

>> 1.  1GB HiMDs have a fixed disc id. It doesn´t change.
>> (...)
>> 3.  disc ids on standard MDs changes every time the MD is 
>>      inserted. So if i eject a MD and reload the same MD both disc ids
>>      will change (the one we get from mclistxx.hma file and the one 
>>      we can read per scsi command) but both are the same.
>>      (on blanc discs, as i wrote above)

>I think we already discussed that somewhere but I'm not sure. At
>least, it doesn't sound unfamiliar to me. I think the reason is simply
>that standard MDs were originally not designed to be used for HiMD
>storage and thus they don't provide extra sectors on the disk to store
>the disk ID. The disk ID is supposed to be unique and HiMD were
>designed with that concept in mind, so that's why their IDs never
>change.


>Adrian

O.K., so we should use " Read format capacities" to check the type of 
the MD and use "erase himd" on 1GB medium and "format himd" on the others.
We can also use capacity information in qhimdtransfer for displaying disc 
information (XX MB of YY MB free).
What do you think?

Thomas