I have come to some problems after upgradeing my kernel to 2.6.15.1/3. Ever since I upgraded my externel usb burner will not get assigned a drive letter. Did i miss something in the kernel? It used to work on the device sr0. As I side not all other external devices work like my psp.

usb 1-3: new high speed USB device using ehci_hcd and address 5
scsi4 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 5
usb-storage: waiting for device to settle before scanning
Vendor: PLEXTOR Model: DVDR PX-716A Rev: 1.09
Type: CD-ROM ANSI SCSI revision: 00
usb-storage: device scan complete


/dev/sda2 swap swap defaults 0 0
/dev/sdb1 /mnt/mp3 auto defaults 0 0
/dev/sda1 / reiserfs defaults 1 1
/dev/sdb5 /mnt/exhd vfat rw 0 0
/dev/sr0 /mnt/external auto defaults 0 0
/dev/sda3 /xp ntfs rw 1 0
/dev/hdd5 /ex vfat defaults 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


smbfs 61560 3
snd_pcm_oss 48288 0
snd_mixer_oss 17024 1 snd_pcm_oss
ipv6 246272 14
ohci_hcd 19332 0
pcspkr 1668 0
parport_pc 25028 0
parport 31816 1 parport_pc
uhci_hcd 30096 0
ahci 10372 0
i2c_i801 7692 0
i2c_core 17040 1 i2c_i801
nvidia 4084752 12
nls_iso8859_1 3968 1
nls_cp437 5632 1
nls_utf8 1792 1
agpgart 28488 1 nvidia

00:00.0 Host bridge: Intel Corporation 925X/XE Memory Controller Hub (rev 04)
00:01.0 PCI bridge: Intel Corporation 925X/XE PCI Express Root Port (rev 04)
00:1c.0 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 2 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #3 (rev 03)
00:1d.3 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #4 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d3)
00:1f.0 ISA bridge: Intel Corporation 82801FB/FR (ICH6/ICH6R) LPC Interface Bridge (rev 03)
00:1f.2 IDE interface: Intel Corporation 82801FR/FRW (ICH6R/ICH6RW) SATA Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus Controller (rev 03)
01:00.0 VGA compatible controller: nVidia Corporation NV43 [GeForce 6600] (rev a2)
02:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5751 Gigabit Ethernet PCI Express (rev 01)
04:02.0 Multimedia audio controller: Creative Labs SB0400 Audigy2 Value

what version did you upgrade from??

also, why not try the latest version just in case (2.6.15.5)??

I upgraded from 2.6.14, I will try the latest.

I have exactly the same problem. Kernel 2.6.15.4 here. My external usb burner used to be assigned to device sr0. Using "dmesg" and "lsusb" I can see that the kernel recognized the burner fine, but no device is created. I have even tried to make some custum rules for udev specifically for this burner, but no luck at all.

I solved my problem. I simply forgot to compile support for SCSI CDROM DISK in the kernel. As module it is called sr_mod. Once I loaded it up, my external dvd burner was assigned device sr0.

Yep that did it good job macky thans for the help.