problem mounting CD writer in 2.4.20

From: Prashanth A Pandit (prashanth_at_prodigylabs.com)
Date: 10/10/03

  • Next message: Pavel Machek: "failing unregister_ioctl32 is pretty fatal condition -- fix up message level" 
    To: <linux-kernel@vger.kernel.org>
Date:	Fri, 10 Oct 2003 10:02:38 +0530

    Hi,

    Am facing a problem with my sony cd writer. Unable to mount. It is connected
    to a Cyrix processor based PC 104 board, running linux kernel 2.4.20. I have
    compiled scsi generic driver and related stuffs to kernel. Following is the
    details about my system:
    ---------------------------------------------------------------------------- 

    ----
Configuration in /etc/lilo.conf
----------------------------------------------------------------------------
----
image=/boot/bzImage-2.4.20
label=linux-2.4.20
read-only
root=/dev/hda1
append="hdb=ide-scsi"
----------------------------------------------------------------------------
----
Extract of 'dmesg' after system boot
----------------------------------------------------------------------------
----
hda: QUANTUM FIREBALL SE2.1A, ATA DISK drive
hdb: SONY CD-RW CRX225E, ATAPI CD/DVD-ROM drive
hdc: Hitachi XXM2.3.0, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: 4124736 sectors (2112 MB) w/80KiB Cache, CHS=1023/64/63
hdc: 1000944 sectors (512 MB) w/1KiB Cache, CHS=993/16/63
Partition check:
hda: hda1 hda2 hda3
hdc: hdc1
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
loop: loaded (max 8 devices)
SCSI subsystem driver Revision: 1.00
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
Vendor: SONY Model: CD-RW CRX225E Rev: QYB2
Type: CD-ROM ANSI SCSI revision: 02
EXT2-fs warning (device ide0(3,3)): ext2_read_super: mounting ext3
filesystem as ext2
----------------------------------------------------------------------------
----
Output of /proc/devices after system boot
----------------------------------------------------------------------------
----
Character devices:
1 mem
2 pty
3 ttyp
4 ttyS
5 cua
6 lp
7 vcs
10 misc
21 sg
29 fb
108 ppp
128 ptm
136 pts
162 raw
Block devices:
1 ramdisk
2 fd
3 ide0
7 loop
22 ide1
31 mtdblock
44 ftl
93 nftl
----------------------------------------------------------------------------
----
Listing of device files in /dev/ directory
----------------------------------------------------------------------------
----
brw-rw---- 1 root disk 3, 1 Sep 26 15:38 /dev/hda1
brw-rw---- 1 root disk 3, 2 Sep 26 15:38 /dev/hda2
brw-rw---- 1 root disk 3, 3 Sep 26 15:38 /dev/hda3
brw-rw---- 1 root disk 3, 65 Sep 26 15:38 /dev/hdb1
brw-rw---- 1 root disk 3, 66 Sep 26 15:38 /dev/hdb2
brw-rw---- 1 root disk 22, 1 Sep 26 15:38 /dev/hdc1
brw-rw---- 1 root disk 22, 2 Sep 26 15:38 /dev/hdc2
brw-rw---- 1 root disk 22, 65 Sep 26 15:38 /dev/hdd1
brw-rw---- 1 root disk 22, 66 Sep 26 15:38 /dev/hdd2
crw-rw---- 1 root disk 21, 0 Sep 26 15:40 /dev/sg0
crw-rw---- 1 root disk 21, 1 Sep 26 15:40 /dev/sg1
lrwxrwxrwx 1 root root 3 Sep 16 17:58 /dev/sga -> sg0
lrwxrwxrwx 1 root root 3 Sep 16 17:58 /dev/sgb -> sg1
brw-rw---- 1 root disk 11, 0 Oct 10 14:45 /dev/scd0
brw-rw---- 1 root disk 11, 1 Oct 10 14:45 /dev/scd1
----------------------------------------------------------------------------
----
Output of cdrecord -scanbus
----------------------------------------------------------------------------
----
Linux sg driver version: 3.1.24
Cdrecord 1.10 (i686-pc-linux-gnu) Copyright (C) 1995-2001 Jörg Schilling
Using libscg version 'schily-0.5'
scsibus0:
0,0,0 0) 'SONY ' 'CD-RW CRX225E ' 'QYB2' Removable CD-ROM
0,1,0 1) *
0,2,0 2) *
0,3,0 3) *
0,4,0 4) *
0,5,0 5) *
0,6,0 6) *
0,7,0 7) *
----------------------------------------------------------------------------
----
Output of mount /dev/scd0 /mnt/cdrom -text2
----------------------------------------------------------------------------
----
mount: /dev/scd0 is not a valid block device
I have been trying to write to CD as well as read from it through my C
program. Please help how do I do it?
Thanks in advance.
- prashanth pandith
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