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.du...@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 > > -- > http://lists.linuxfromscratch.org/listinfo/lfs-support > FAQ: http://www.linuxfromscratch.org/blfs/faq.html > Unsubscribe: See the above information page > > Do not top post on this list. > > A: Because it messes up the order in which people normally read text. > Q: Why is top-posting such a bad thing? > A: Top-posting. > Q: What is the most annoying thing in e-mail? > > http://en.wikipedia.org/wiki/Posting_style -- http://lists.linuxfromscratch.org/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Do not top post on this list. A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? http://en.wikipedia.org/wiki/Posting_style
