Thomas Schmitt wrote: > Hi, > > Just to make it clear: > Was this kernel loaded from the very same USB stick which it then cannot > inquire properly and in some cases cannot read from ?
Yes. Oh, and I tried it again this morning, after the laptop had been off all night, and this time it worked (live image boot). I then tried rebooting and running the installer, and it failed in the usual place. > > [!!] Detect and mount CD-ROM > > No common CD-ROM drive was detected. > > This does not match the complaint in the web to which Kent pointed us > as example. Ah. Right. > > This may be related to device initialization by the BIOS. > > If the kernel was loaded by the bootloader from that USB stick, then > the subsequent failures in the kernel run could be caused by some bad > state of the USB stick when the bootloader starts the kernel. > > If booting was done via EFI (and not Legacy BIOS mode) then we could > ask at grub-de...@gnu.org, whether the problem is known in any way. > (With BIOS mode we'd need to go to quite dead sysli...@zytor.com ) I'm booting using EFI. > How does the stick behave if you plug it into a running GNU/Linux system ? > Any problem messages in the log ? Is it usable as storage device ? If I plug the stick into the laptop when it's running, the stick is mounted okay. I ran sum(1) on all the files, using "find ... -type f". I didn't see any problems in kern.log. I poked around with cd and ls a bit and didn't notice anything odd, but then I'm not familiar with the contents of a hybrid image ISO. Thanks for all your help on this. mike