When remotely mounting an ISO (in my case through HP iLO 4 - Integrated Remote Console) then in most cases boot fails because of unreliable ISO mount.
ISO is most likely being detected via blkid -L K3OS with a small delay, so in a time of executing libexec/k3os/live#L11 ISO is not detected and continue trying detecting USB which fails.
I was able to workaround this issue by patching libexec/k3os/live to give it more attempts when detecting ISO:
libexec/k3os/live
I don't know exactly why this is happening, but with the workaround I'm able to run image reliably.
When remotely mounting an ISO (in my case through
HP iLO 4 - Integrated Remote Console) then in most cases boot fails because of unreliable ISO mount.ISO is most likely being detected via
blkid -L K3OSwith a small delay, so in a time of executing libexec/k3os/live#L11 ISO is not detected and continue trying detecting USB which fails.I was able to workaround this issue by patching
libexec/k3os/liveto give it more attempts when detecting ISO: libexec/k3os/liveI don't know exactly why this is happening, but with the workaround I'm able to run image reliably.