So I have two DVD's I'd like to watch. However, computer says:

Error mounting: mount: block device /dev/sr0 is write-protected, mounting read-only mount: wrong fs type, bad option, bad superblock on /dev/sr0, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so

dmesg | tail [ 22.650906] tg3 0000:03:00.0: eth0: Flow control is on for TX and on for RX [ 22.651116] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready [ 31.408759] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro,commit=0 [ 32.768019] eth0: no IPv6 routers present [ 37.097846] kbd_keycode: 30 callbacks suppressed [ 37.097851] keyboard: can't emulate rawmode for keycode 240 [ 37.105836] keyboard: can't emulate rawmode for keycode 240 [ 1245.695843] lo: Disabled Privacy Extensions [ 1921.458077] UDF-fs: No anchor found [ 1921.458083] UDF-fs: No partition found (1)

Which I guess is because it's trying to boot from it. (Or is that a red herring?) So what do I do? I have googled and not got very far except installing xine which gets me the menu options but can't play the film which is all I wish to do.