problem with mounting cdwr
 

hi all,

well, i downloaded a file from windows.. and since it is more that 1.4 mb .. i copied it to a cdwr and went to the linux laptop ( another machine ) and tried mounting it but problems occured:

mount -t iso9660 /dev/hdb /mnt/cdrom
mount: block device /dev/hdb is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/hdb,
or too many mounted file systems

what is the problem please??


best regards

Does your laptop cd reader read cdrw at all? Older ones can have a problem with this.

yes it can .. when i boot to win2000 .. everything is fine .. i just put the file there and get it from mounting the drive in linux .. but i would like to get it directly from the in linux..

any ideA??

best regards

Did you compile your own kernel? If so, did you enable support for iso9660 filesystem (the standard filesystem for CD-ROM)? Try and see if maybe it's setup as a module. (modprobe iso9660)

Was the CD recorded with packet writing? Was the CD "closed"?

Rashkae : i didn't touch the kernel .. it is what i got when i first installed linux ... i did modprobe iso9660 ( is it supposed to check it or what?) and i got: modprobe: Can't locate module iso9660

does it means that iso9660 is not supported?! strange .. i could mount recorded cds ( cdr not cdwr) well i didn't try to mount -t iso9660 the cdr .. but i thought this is the defualt one .. suggestions?
if you suggest to add a module please tell me in details .. i really don't know how to add a module ( always fail!)



dorward: no the cd is not closed:)


best regards

No need to load modules
 

The module I was talking about is a generic CD filesystem. If you can mount CD-R, you already have support for this in your kernel and need do nothing more. (all distros I know of come with iso9660 support by default.)

Terribly sorry, but I'm out of ideas.

thanks:) hopefully one will help:)

best ragards

are you sure that the cd drive is on hdb and not hdc?

That is probably the problem. I don't believe Linux has support for the file system used for unclosed packet written CDs.

There is a packet writing file system patch for the kernel, but that is in the experimental stage and I do not know if it is compatable with the system you are using under Windows.

http://freshmeat.net/projects/packet-cd/

fatgod: if it wasn't hdb i won't get that message, right?


well, today i formated a new cdwr from windows .. while i was doing that .. it said that it will format the cd using UDF format, i was like .. WaaaW so this is the format .. it is not iso9660 .. hmmmmm now .. is this UDF supported?? any suggestiong?

thanks all

Right. if it is HDC then it will just work ;)
UDF is not a filesystem type. This is a not an issue for you. the filesystem should be set to iso9660... I have an entry in my /etc/fstab specifying which filesystems i want to mount. MY CD ones look like this...

/dev/hdc /media/dvd auto ro,noauto,user,exec 0 0

enter this line into the fstab file (just be sure to have a dir /media/dvd) or modify it to suit your needs and then to mount it all you need to do is insert a disk (that is not blank) into the dive and type mount /dev/hdc and that should work. try changing hdc to hdb and hdd as it will be one of these. most likely hdc though!!

good luck!

I think that since his Linux box is capable of mounting CR-R, there is no point in checking the syntax and details of his fstab. :)

Oh, I must be backing up the wrong tree so to speak. I didn't realise that he could mount disks. I re read the thread an I don't see where he indicates that he can mount some disks and not others...

but anyway if you can mount some disks murshed then disregard my comments :D sorry about that!

Just a quickie.... what program did you use to write the CD-RW in the first place?