Teorishkai isheina, kad vietos nors i yra, yrenginys neieshkos nieko.
Ydomu kaip pasielgtu skanuojanchios programos shitoj vietoj.

"a" <a@.a> wrote in message news:mn.e4367d837c7e23a1.55248@0a...
> klausiu explained on 2008.03.28 :
>> paprastai tai negalima, taciau diske juk is tikro lieka laisvos vietos; 
>> gal kas ieskojot kokiu toolsu, kad atlikt "neimanoma"?
>
> gal tai ines sviesos...
>
> Basic facts.
> 1. A cdrom/dvd drive will only start reading from the first TOC written in 
> the leadin area, i.e. it will not go looking for other TOCs without this.
> 2. A multi-session disc works this way, after first TOC is read, it 
> actually contains a link (multi-session link) to the location of the next 
> TOC. So the drive uses this to read in the next TOC, otherwise, without it 
> it will not go and read one.
> 3. After reading this 2nd TOC, it may also contain a link to the next 3rd 
> TOC. But, if it was closed, then the link would have been written with 
> address of FF:FF:FF, or there simply won't be a link entry in this TOC. So 
> end of reading multi-session TOCs.
>
> As u can see, multi-sessions on a CD are created by linking the previous 
> TOC with the next new one and so on forming a chain. When a new TOC is 
> generated in memory, it is made to link to the next empty space on the CD.
>
> Closing a disc means that the last TOC will not link to the next empty 
> space, so stopping the chain, and it will be impossible to create further 
> sessions. Also, because this last TOC is already written, unless you are 
> using a rewritable disc or u are able to rewrite to the CD-R, it is 
> impossible to extend the disc with further sessions.
>
> Also, the rewriter drive will not even let u write to the CD-R, unless it 
> is a blank, or the last TOC links to a valid empty space.
>
> Confusion & misnomers...
>
> Lastly, "closing a session" can also have a different meaning in certain 
> applications. In most, it simply just means writing the session project to 
> disc with session leadout and a link to the next empty space. This is so 
> that cdrom/dvd drives can read it. Which, this is a normal multi-session 
> procedure. The disc is in fact a normal multi-session extendable disc.
>
> Providing the "disc is not closed" (different from "closed session" 
> above), any multi-session capable software will be able to write further 
> sessions, e.g. Nero.
>
> "Closed session" was made to distinguish between "Open session" - where, 
> PMA (special area) was used to store the TOC/s which weren't actually 
> written in the correct places yet. Only rewriter can read such discs.
>
>