Please bear with my following questions.
What is the difference between /dev, /media and /mnt? Following is what I have found from internet but I still have little idea:
/dev this folder contains device files
/media this is a mount point for removable devices
/mnt this is a temporary mount point
What is the purpose of mount? In other words, if a device has been represented by the OS as a device file under /dev, why can it not be accessed via the device file directly without mounting?
Is mount only used for storage device, not for non-storage device, such as graphical card, network card, camera, ...?
Where is a device file under /dev mounted to, under /media or under /mnt. I remember I have seen both, but am curious when to mount to which?
I found my CD was automatically mounted to /media/Ubuntu 11.04 i386. I guess the device file of the CD is /dev/cdrom, but I cannot confirm it by looking into /dev/cdrom and /media/Ubuntu 11.04 i386:
$ ls -l /media/Ubuntu\ 11.04\ i386/ total 3522 -r--r--r-- 1 Tim Tim 143 2011-04-27 13:04 autorun.inf ... $ ls -l /dev/cdrw lrwxrwxrwx 1 root root 3 2011-05-28 15:12 /dev/cdrw -> sr0 $ ls -l /dev/cdrom lrwxrwxrwx 1 root root 3 2011-05-28 15:12 /dev/cdrom -> sr0
How can I find out which device file is for my CD? Thanks and regards!