Thomas Schmitt wrote: > The bad log has two suspicious lines before that range: > [ 6.997775] usb 1-2: New USB device found, idVendor=abcd, idProduct=1234 > [ 7.000181] usb 1-2: New USB device strings: Mfr=1, Product=2, > SerialNumber=3 > Looks much like phony default values. > They are missing in the good log. Other kernel version ?
I'm not sure I understand the question. The good and bad logs are both for the same kernel--they're different attempts to boot the same ISO using the same USB stick. > > BusyBox v1.22.1 (Debian 1:1.22.0-19+b3) built-in shell (ash) > > Enter 'help' for a list of built-in commands. > > > > (initramfs) Unable to find a medium containing a live file system > > This matches the bad log. The stick is not registred as SCSI device and > thus not accessible for reading or writing data. > > We shall note that this is not what Kent West, the OP, reports for his > problems. If his problem is hardware related, then it is more fuzzy > than yours. This prompted me to go back to try to reproduce the CD-ROM thing. And yes, I can reproduce a failure that sounds like the one that was originally reported. If I select the installer (rather than the live image) when booting from the USB stick, it gets through the 3 i18n screens (language, location, keyboard layout), pauses, and then brings up a screen with -----8<-----8<----- [!!] Detect and mount CD-ROM No common CD-ROM drive was detected. You may need to load additional CD-ROM drivers from removable media, such as a driver floppy. If you have such media available now, insert it and continue. Otherwise, you will be given the option to manually select CD-ROM modules. Load CD-ROM drivers from removable media? <Yes> <No> ----->8----->8----- This may be related to device initialization by the BIOS. I believe there's a warning about this in the installation guide somewhere. But even with my BIOS set to "Thorough" initialization, I still can get this failure. It seems harder to get a successful boot (installer or live image) if the system has been on recently. In any case, I suspect that my live image boot failures are due to the same root cause as the installer failure. mike PS. The BIOS setting I'm referring to is POST Behavior/Fastboot. The choices are Minimal, Auto, and Thorough, with Minimal being the default IIRC.