Oznacovanie CDRW: sdc0 sg0 scd - co je co?

Ladislav Vaiz spam na nagano.cz
Čtvrtek Prosinec 2 12:39:14 CET 2004


Cituji z /usr/src/linux/Documentation/devices.txt


> Avsak preco (SECONDARY master) napalovacka je scd0, nie scd?

 11 block       SCSI CD-ROM devices
                  0 = /dev/scd0         First SCSI CD-ROM
                  1 = /dev/scd1         Second SCSI CD-ROM

cislo neznamena partisnu, ale dalsi mechaniku.

>
> 1B. Ak hdX=hard-drive, scX=? - nemalo by byt SCSI drive = sd?
> 1C. Ak SCSI drive=scX, tak sdX=co?
>
> 2.
> Co je zac /dev/sg0? - lebo obcas je napalovacka toto, proste v niekt.

 21 char        Generic SCSI access
                  0 = /dev/sg0          First generic SCSI device
                  1 = /dev/sg1          Second generic SCSI device
                    ...

                Most distributions name these /dev/sga, /dev/sgb...;
                this sets an unnecessary limit of 26 SCSI devices in
                the system and is counter to standard Linux
                device-naming practice.


> Co zac je
> brw-rw----  1 root disk 8, 32 2003-07-09 13:52 /dev/sdc

  8 block       SCSI disk devices (0-15)
                  0 = /dev/sda          First SCSI disk whole disk
                 16 = /dev/sdb          Second SCSI disk whole disk
                 32 = /dev/sdc          Third SCSI disk whole disk
                    ...
                240 = /dev/sdp          Sixteenth SCSI disk whole disk

                Partitions are handled in the same way as for IDE
                disks (see major number 3) except that the limit on
                partitions is 15.

sdc odpovida hdc, nema obecne nic spolecneho s cdrom.

La'd"a


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