le sam 27-10-2001 at 20:07 Borsenkow Andrej a �crit : > Charles A Edwards wrote: > > > I have another bit of strangeness for you. > > > There is nothing strange here. > > > Look at the following terminal output: > > > > [charles@localhost .gnome-desktop]$ mount /mnt/zip > > mount: special device /dev/sda4 does not exist > > [charles@localhost .gnome-desktop]$ su > > Password: > > [root@localhost .gnome-desktop]# mount /dev/sda4 /mnt/zip > > mount: special device /dev/sda4 does not exist > > [root@localhost .gnome-desktop]# mount /dev/sda /mnt/zip > > mount: you must specify the filesystem type > > [root@localhost .gnome-desktop]# exit > > exit > > [charles@localhost .gnome-desktop]$ mount /mnt/zip > > [charles@localhost .gnome-desktop]$ umount /mnt/zip > > [charles@localhost .gnome-desktop]$ mount /mnt/zip > > [charles@localhost .gnome-desktop]$ > > > > I boot the system with no disk in the USB zip so of course could not mount it with >mount /mnt/zip then when I su to root and try to mount /dev/sda /mnt/zip I get the fs >type error. > > At this point I exit back to user and can now mount and umount the disk > > and then mount a different disk. > > > > > > /dev/sda* files are links created by defvsd. When there is no disk in > drive, devfsd removes these link. That is reason for "/dev/sda4 does > not exist". /dev/sda always exist and is the link to the whole disk. > When you access it, it makes driver to rescan partition tables, thus > creating files for partition. It is irrelevant that you then exited back > to user, it is just coincidence. > > That is why I always say that using old-style names is bad in case of devfs. > > > > /lib/dev-state/scsi/host1/bus0/target0/lun0 remains enpty but > > /dev/scsi/host1/bus0/target0/lun0 contains the block device entries disc and part4. > > > > > /lib/dev-state is changed only when you change permission/modes or > manually create file. It does not matter what is there.
so we must use the plain device name or else make sda4 in dev-state -- http://perso.wanadoo.fr/linux_wizard/index.html - Quand le moi est ha�ssable, aimer son prochain comme soi m�me devient une atroce ironie. Paul Val�ry.
