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After installing Lenny from an Asus SDRW-08D1S-U USB DVD drive, the drive is not listed:
Bus 001 Device 001: ID ..... Linux Foundation 1.1 root hub x 4
If the drive was connected before boot, and I remove the drive after boot, I get some kernel messages ending in a message saying: Disabling IRQ #23. This doesn't happen if I connect the drive after boot.
Is this a kernel problem? Does the install OS run a kernel that is different from what is available in the installed OS? The host is a new Asus EeePC 1001PX.
When you put a DVD or CD into the drive, does it then appear in a file manager or on the desktop?
Here's the thing based on my experience: an empty USB drive will often not be sensed by Linus. If a CD or floppy is place in it, then it may be sensed. Depending on the distro, it may appear on the desktop or in a file manager.
Here's a link to a post I wrote about setting up a IDE drive in a USB enclosure on a Slackware system. I'm not trying to toot my horn here--this is all stuff I learned from other persons, but I've followed the same procedure to mount everything from digital cameras to MP3 players to USB sticks.
Nothing in dmesg. The only messages that are appended are the IRQ-related messages that are generated if I remove the drive after a boot with the drive connected prior to the boot. If I reconnect the drive, or disconnect it, after boot dmesg is uneffected. I'm running kernel 2.6.26-2, with nothing but the base system installed (i.e. no standard or GUI packages). I'll try running a more complete install to test, but i'd really like to keep it minimal in the long run. The only cd/dvd related device in /dev is sg0, but when I mod /etc/fstab, changing the entry for scd0 with sg0, reboot, and try a mount of /dev/sg0, I get an error saying its not a block device... Also, when configuring udev during an expert install, I select the complete set of drivers (instead of the targeted set) for the system.
Just tried the drive in another Lenny machine with the same kernel, and it worked perfectly. I should have tried this earlier, but I put in another USB device and it has the same problem. Gonna try another OS on the same harware...