On 25 Apr 2018, at 18:58, Andre Albsmeier <andre.albsme...@siemens.com> wrote: > > I have set up a new system disk for an i386 11.2-PRERELEASE box. I did the > usual > > gpart create -s gpt $disk > gpart add -t freebsd-boot -s 984 $disk > gpart bootcode -b /boot/pmbr -p /boot/gptboot -i 1 $disk > ... > > thing, just to notice that the box wouldn't boot. It seems to hang where > stage 2 should be run -- when the '\' should start spinning the screen > turns white and the box hangs (tested on two machines, an Asus P5W and a > Supermicro A2SAV). > > So I replaced gptboot on the new disk by the one from an older machine > and everything was fine. I wanted to find out what is actually causing > the issue and recompiled /usr/src/stand after updating the old sources > in several steps. > > Eventually it turned out that it depends on the compiler. When compiling > the latest /usr/src/stand with clang 5.0.1 the resulting gptboot works. > When using 6.0.0 it doesn't. To be exact, it's gptboot.o which is causing > the problems. When using a gptboot.o from a clang 5 system it is OK, when > using a gptboot.o from a clang 6 system it fails. > > To add more confusion: I usually have WITHOUT_LOADER_GELI in my make.conf. > When removing this, the resulting gptboot works even when compiled with > clang 6... > > I can reproduce this in case s.o. wants me to do some tests...
I can't reproduce it on my end, unfortunately. I downloaded the latest FreeBSD-11.2-PRERELEASE-i386-20180420-r332802 snapshot, installed it to a GPT partitioned disk, and it boots just fine. This snapshot corresponds to r332802, which has clang 6.0.0, with the EFLAGS change still reverted, so I assume its copy of gptboot is also compiled with that. Which exact revision of the base system were you using? -Dimitry
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