Hi. This bug seems to be reported as: http://www.cs.helsinki.fi/linux/linux-kernel/2003-21/0508.html I'll try to give some more information IDE CD's cannot be mounted while using ide-scsi emulation. Perhaps, they can be mounted using ide-cd driver. Some HW information: switch@wanda:~# cdrecord --scanbus Cdrecord 2.01a16 (i686-pc-linux-gnu) Copyright (C) 1995-2003 Jörg Schilling Linux sg driver version: 3.1.25 Using libscg version 'schily-0.7' scsibus0: 0,0,0 0) ' LG ' 'CD-ROM CRD-8322B' '1.02' Removable CD-ROM 0,1,0 1) 'SONY ' 'CD-RW CRX140E ' '1.0n' Removable CD-ROM hda: 40GB IDE HD hdb: 20GB IDE HD hdc: LG CDROM (32x) (This is giving the error) hdd: Sony CD-RW Kernel version: 2.4.21-ac8 (XFS Support) Boot parameters: hdc=cdrom hdd=ide-scsi cpuinfo: wanda:~# cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 6 model name : AMD Athlon(TM) XP1600+ stepping : 2 cpu MHz : 1411.822 cache size : 256 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow bogomips : 2791.83 modules: wanda:~# cat /proc/modules sr_mod 15544 0 (autoclean) cdrom 28256 0 (autoclean) [sr_mod] parport_pc 27624 0 parport 25992 0 [parport_pc] ipt_state 568 8 (autoclean) ipt_MASQUERADE 1368 1 (autoclean) iptable_nat 16302 1 (autoclean) [ipt_MASQUERADE] iptable_filter 1772 1 (autoclean) ip_tables 11776 6 [ipt_state ipt_MASQUERADE iptable_nat iptable_filter] irda-usb 14192 0 (unused) mousedev 4180 2 irda 164896 0 [irda-usb] usbmouse 2264 0 (unused) hid 19172 0 (unused) nls_iso8859-15 3388 1 (autoclean) nls_cp437 4380 1 (autoclean) ip_conntrack_ftp 4048 0 (unused) ip_conntrack 18308 3 [ipt_state ipt_MASQUERADE iptable_nat ip_conntrack_ftp] ide-scsi 10160 0 smbfs 38704 0 (unused) emu10k1 60812 3 ac97_codec 12564 0 [emu10k1] sound 58248 0 [emu10k1] soundcore 3844 7 [emu10k1 sound] keybdev 2052 0 (unused) usbkbd 3640 0 (unused) input 3392 0 [mousedev usbmouse hid keybdev usbkbd] usb-uhci 23280 0 (unused) usbcore 63148 1 [irda-usb usbmouse hid usbkbd usb-uhci] ioports: wanda:~# cat /proc/ioports 0000-001f : dma1 0020-003f : pic1 0040-005f : timer 0060-006f : keyboard 0070-007f : rtc 0080-008f : dma page reg 00a0-00bf : pic2 00c0-00df : dma2 00f0-00ff : fpu 0170-0177 : ide1 01f0-01f7 : ide0 02f8-02ff : serial(set) 0376-0376 : ide1 0378-037a : parport0 037b-037f : parport0 03c0-03df : vga+ 03f6-03f6 : ide0 03f8-03ff : serial(set) 0cf8-0cff : PCI conf1 a400-a41f : VIA Technologies, Inc. USB (#3) a400-a41f : usb-uhci a800-a81f : VIA Technologies, Inc. USB (#2) a800-a81f : usb-uhci b000-b01f : VIA Technologies, Inc. USB b000-b01f : usb-uhci b400-b40f : VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE b400-b407 : ide0 b408-b40f : ide1 b800-b807 : Creative Labs SB Live! MIDI/Game Port d000-d01f : Creative Labs SB Live! EMU10k1 d000-d01f : EMU10K1 d400-d4ff : Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (#2) d400-d4ff : 8139too d800-d8ff : Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ d800-d8ff : 8139too iomem: wanda:~# cat /proc/iomem 00000000-0009fbff : System RAM 0009fc00-0009ffff : reserved 000a0000-000bffff : Video RAM area 000c0000-000c7fff : Video ROM 000f0000-000fffff : System ROM 00100000-1ffebfff : System RAM 00100000-002ff356 : Kernel code 002ff357-00392ae3 : Kernel data 1ffec000-1ffeefff : ACPI Tables 1ffef000-1fffefff : reserved 1ffff000-1fffffff : ACPI Non-volatile Storage ed000000-ed0000ff : Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (#2) ed000000-ed0000ff : 8139too ed800000-ed8000ff : Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ ed800000-ed8000ff : 8139too ee000000-efefffff : PCI Bus #01 ee000000-eeffffff : nVidia Corporation NV11 [GeForce2 MX/MX 400] eff00000-f7ffffff : PCI Bus #01 f0000000-f7ffffff : nVidia Corporation NV11 [GeForce2 MX/MX 400] f8000000-fbffffff : VIA Technologies, Inc. VT8366/A/7 [Apollo KT266/A/333] ffff0000-ffffffff : reserved lspci: wanda:~# lspci -v 00:00.0 Host bridge: VIA Technologies, Inc. VT8366/A/7 [Apollo KT266/A/333] Subsystem: Asustek Computer, Inc. A7V266-E Mainboard Flags: bus master, medium devsel, latency 0 Memory at f8000000 (32-bit, prefetchable) [size=64M] Capabilities: [a0] AGP version 2.0 Capabilities: [c0] Power Management version 2 00:01.0 PCI bridge: VIA Technologies, Inc. VT8366/A/7 [Apollo KT266/A/333 AGP] (prog-if 00 [Normal decode]) Flags: bus master, 66Mhz, medium devsel, latency 0 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 Memory behind bridge: ee000000-efefffff Prefetchable memory behind bridge: eff00000-f7ffffff Capabilities: [80] Power Management version 2 00:0d.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) Subsystem: Realtek Semiconductor Co., Ltd. RT8139 Flags: bus master, medium devsel, latency 32, IRQ 11 I/O ports at d800 [size=256] Memory at ed800000 (32-bit, non-prefetchable) [size=256] Capabilities: [50] Power Management version 2 00:0e.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) Subsystem: Realtek Semiconductor Co., Ltd. RT8139 Flags: bus master, medium devsel, latency 32, IRQ 10 I/O ports at d400 [size=256] Memory at ed000000 (32-bit, non-prefetchable) [size=256] 00:0f.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 07) Subsystem: Creative Labs: Unknown device 8064 Flags: bus master, medium devsel, latency 32, IRQ 5 I/O ports at d000 [size=32] Capabilities: [dc] Power Management version 1 00:0f.1 Input device controller: Creative Labs SB Live! MIDI/Game Port (rev 07) Subsystem: Creative Labs Gameport Joystick Flags: bus master, medium devsel, latency 32 I/O ports at b800 [size=8] Capabilities: [dc] Power Management version 1 00:11.0 ISA bridge: VIA Technologies, Inc. VT8233 PCI to ISA Bridge Subsystem: Asustek Computer, Inc. VT8233A Flags: bus master, stepping, medium devsel, latency 0 Capabilities: [c0] Power Management version 2 00:11.1 IDE interface: VIA Technologies, Inc. VT82C586/B/686A/B PIPC Bus Master IDE (rev 06) (prog-if 8a [Master SecP PriP]) Flags: bus master, stepping, medium devsel, latency 32 I/O ports at b400 [size=16] Capabilities: [c0] Power Management version 2 00:11.2 USB Controller: VIA Technologies, Inc. USB (rev 1b) (prog-if 00 [UHCI]) Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller Flags: bus master, medium devsel, latency 32, IRQ 9 I/O ports at b000 [size=32] Capabilities: [80] Power Management version 2 00:11.3 USB Controller: VIA Technologies, Inc. USB (rev 1b) (prog-if 00 [UHCI]) Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller Flags: bus master, medium devsel, latency 32, IRQ 9 I/O ports at a800 [size=32] Capabilities: [80] Power Management version 2 00:11.4 USB Controller: VIA Technologies, Inc. USB (rev 1b) (prog-if 00 [UHCI]) Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller Flags: bus master, medium devsel, latency 32, IRQ 9 I/O ports at a400 [size=32] Capabilities: [80] Power Management version 2 01:00.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2 MX/MX 400] (rev b2) (prog-if 00 [VGA]) Flags: bus master, 66Mhz, medium devsel, latency 64, IRQ 11 Memory at ee000000 (32-bit, non-prefetchable) [size=16M] Memory at f0000000 (32-bit, prefetchable) [size=128M] Expansion ROM at efff0000 [disabled] [size=64K] Capabilities: [60] Power Management version 2 Capabilities: [44] AGP version 2.0 Problem: When trying to mount /dev/scd0 lots of errors like this are thrown: ide-scsi: expected 2048 got 4096 limit 2048 ide-scsi: The scsi wants to send us more data than expected - discarding data ide-scsi: [[ 28 0 0 0 0 63 0 0 1 0 0 0 ] ] (full error attached in dmesg) And mount outputs: "mount: wrong fs type, bad option, bad superblock on /dev/sr0, or too many mounted file systems" Please, ask for more info if needed. Best greetings. -- Paco Ros (a.k.a. Switch) Member of Balearic Islands Linux User Group BULMA