[lfs-support] LFS 7.10 systemd - boot OK on SSD thunderbolt but fail with USB3

DOMINIQUE VAYSSAIRAT dovayssa at gmail.com
Thu Jul 5 03:08:35 PDT 2018

Yeah!, thanks a lot Bruce and Ken. The rootdelay=10 is the right solution, effectively usb is slower than thunderbolt at start.

init=PARTUUID is OK and init=/dev/sda4 so because kernel seem to give /dev/sdb as name and keep /dev/sda for internal disk. Later i’ll do a trie with UUID. 

for the story, i turned around this problem during one month with severals externals disk always for the same result and a less than one minute it’s solved.

I am going now to next stage : BLFS on physical MAC (which is OK under virtualbox).

regards —Dominique

> Le 5 juil. 2018 à 02:44, Bruce Dubbs <bruce.dubbs at gmail.com> a écrit :
> On 07/04/2018 07:17 PM, Ken Moffat wrote:
>> On Thu, Jul 05, 2018 at 12:50:56AM +0100, Ken Moffat wrote:
>>> On Wed, Jul 04, 2018 at 07:52:48PM +0200, DOMINIQUE VAYSSAIRAT wrote:
>>>> First and third tries are OK/
>>>> Second trie end with a kernel panic each time.
>>>> I think that the problem is about USB because on the screen of the kernel panic I see that the kernel do not found the / partition.
>>>> I tried with boot=/dev/sda4 , boot=UUID=xxx and finally boot=PARTUUID=xxx with the same result
>> Some further comments on that line: I assume boot= is a typo for
>> root= (pointing to where the rootfs for the selected kernel should
>> be found) ?
>> /dev/sda4 will normally be a partition on the (first) internal drive,
>> which I assume has some version of OSX.
>> Somebody, probably Michael, posted recently that the kernel
>> understands *one* sort of UUID specification (probably PARTUUID, but
>> I might be mistaken - check his recent posts in the list archive).
> Yes, root=TARTUUID=1234...cdef  should work,  Also rootdelay=10 might give time for usb device to be recognized.
>  -- Bruce
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