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Re: Possibly erroneous "device not present" message during boot

On Thu 13 Apr 2017 at 12:28:58 -0500, David Wright wrote:

> Not being expert with Grub myself, I don't know how it reacts to a
> failure during the search. Just a quick glance at my own cfg shows

For the third time in this thread: GRUB reacts by shrugging its
shoulders and booting whatever the linux and initrd say. If they
are not sensible you can forget about booting. You can judge the
importance of a search line in your grub.cfg after doing this.

This is so easy to test. Just do some deletions by editing the GRUB
menu when it appears. Anything between if....fi would do for a start.

> that there are "set root" commands very early on in the file. So,
> again I'm guessing, this may explain where the kernel is being
> read from: one of those early commands has given Grub a fallback
> device.

What effect a USB hub or card reader has on the booting process
I do not know. It could be a factor.