I'm triying to burn an iso to a cd
I tried cdrecord -v -eject dev=/dev/hdc img.iso(as root)
but it gives me:
# cdrecord -v -eject dev=/dev/hdc windows_xp.iso
cdrecord: No write mode specified.
cdrecord: Asuming -tao mode.
cdrecord: Future versions of cdrecord may have different drive dependent defaults.
cdrecord: Continuing in 5 seconds...
Cdrecord-Clone 2.01 (i686-pc-linux-gnu) Copyright (C) 1995-2004 Jörg Schilling
TOC Type: 1 = CD-ROM
scsidev: '/dev/hdc'
devname: '/dev/hdc'
scsibus: -2 target: -2 lun: -2
Warning: Open by 'devname' is unintentional and not supported.
cdrecord: Read-only file system. Cannot open '/dev/hdc'. Cannot open SCSI driver.
cdrecord: For possible targets try 'cdrecord -scanbus'.
cdrecord: For possible transport specifiers try 'cdrecord dev=help'.

I tried cdrecord -scanbus(as root)
but :
Cdrecord-Clone 2.01 (i686-pc-linux-gnu) Copyright (C) 1995-2004 Jörg Schilling
cdrecord: No such file or directory. Cannot open '/dev/pg*'. Cannot open SCSI driver.
cdrecord: For possible targets try 'cdrecord -scanbus'.
cdrecord: For possible transport specifiers try 'cdrecord dev=help'.

what do I have to do??
I can write anything, or erase an CDRW
thx

What kernel are you using?
I remember that 2.4.x kernels required SCSI emulation for your burning device, you needed to pass something like 'append=" hdc=ide-scsi"' in your lilo configuration or whatever bootloader you use.
I don't really know if that's exactly your case.

Edit: here I found a linux burning tutorial, I thought it may help you a little

I seem to remember a script called rescan-scsi-bus, that I used. It gave me some numbers that allowed me to use cdrecord dev=0,0,0 etc...

Samac

I've put append="hdc=ide-scsi".... in lilo.conf...but it gives me the same thing
and the module ide-scsi is installed.
In suse worked.
I don't know what is happening in slackware.

More info please

need : fstab, kernel version.

also, if you have kde and K3b installed, on kmenu -> settings -> k3bsetup and see what that tells you too and let us know about the individual permissions of files that are need to be chmodded.

Grab xcdroast and try it from there, if that doesn't work for you boot a live CD like Slax and use K3B. Make sure you have a big enough /tmp so you can save the image there.

Linux laboator 2.4.33.3 #1 Fri Sep 1 01:48:52 CDT 2006 i686 athlon-4 i386 GNU/Linux
this is my computer

/dev/hda8 swap swap defaults 0 0
/dev/hda6 / ext3 defaults 1 1
/dev/hda7 /e ext3 defaults 1 2
/dev/hda1 /c vfat defaults,rw,umask=0000 1 0
/dev/hda5 /d vfat defaults,rw,umask=0000 1 0
/dev/cdrom /mnt/cdrom auto noauto,owner,ro 0 0
/dev/fd0 /mnt/floppy auto noauto,owner 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
proc /proc proc defaults 0 0

fstab

fstab does not matter since cdrecord uses the actual device. Did you rerun lilo to save changes? If the ide-scsi module is loaded have you tried rerunning the command.
cdrecord -scanbus

The correct syntax for buring an ISO file is:
cdrecord -v speed=2 dev=0,0,0 img.iso (where 0,0,0 is the device returned by the cdrecord -scanbus command)

thx... that was it but now I have another problem
I can't mount any of cds.
I tried mount /dev/hdc /mnt/cdrom
$mount: you must specify the filesystem type
then
$ mount -t iso9660 /dev/hdc /mnt/cdrom
$mount: wrong fs type, bad option, bad superblock on /dev/hdc,
missing codepage or other error
(could this be the IDE device where you in fact use
ide-scsi so that sr0 or sda or so is needed?)
In some cases useful info is found in syslog - try
dmesg | tail or so
even eject doesen't work
$dmesg | tail

ide-scsi: hdc: unsupported command in request queue (0)
end_request: I/O error, dev 16:00 (hdc), sector 0
FAT: unable to read boot sector
UMSDOS: msdos_read_super failed, mount aborted.
ide-scsi: hdc: unsupported command in request queue (0)
end_request: I/O error, dev 16:00 (hdc), sector 0
FAT: unable to read boot sector
ide-scsi: hdc: unsupported command in request queue (0)
end_request: I/O error, dev 16:00 (hdc), sector 64
isofs_read_super: bread failed, dev=16:00, iso_blknum=16, block=32

thx

Forgot to mention that since your now using the ide-scsi module your cdrom device ID is now /dev/scd0. You can create a link /dev/cdrom if desired.

You seem to be trying to mount your cd's as user.If you can mount them as "root" then you will have to edit your /etc/fstab entry as follows=
/dev/cdrom /mnt/cdrom auto noauto,user,ro 0 0

"user" instead of owner .
I mount mine as = mount /mnt/cdrom

good luck