[     3.987066] kern.module.path=/stand/amd64/10.99.4/modules
[     4.001301] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[     4.007065] [drm] Driver supports precise vblank timestamp query.
[     4.017058] i915drmkms0: interrupting at msi4 vec 0 (i915drmkms0)
[     4.247060] [drm] Initialized i915 1.6.0 20200114 for i915drmkms0 on minor 0
[     5.027062] intelfb0 at i915drmkms0
[     5.027062] [drm] DRM_I915_DEBUG enabled
[     5.037057] [drm] DRM_I915_DEBUG_GEM enabled
[     5.037057] intelfb0: framebuffer at 0x90020000, size 1920x1080, depth 32, stride 7680
[     5.037057] uvm_fault(0xffffffff819101c0, 0xfffffffffffff000, 1) -> e
[     5.047053] fatal page fault in supervisor mode
[     5.047053] trap type 6 code 0 rip 0xffffffff80dc2dce cs 0x8 rflags 0x10286 
      cr2 0xfffffffffffffff0 ilevel 0 rsp 0xffffb80449741af0
[     5.057053] curlwp 0xffffe4850c812080 pid 0.211 lowest kstack 0xffffb8044973d2c0

zcat  NetBSD-10.99.4-amd64-bios-install.img.gz | sudo dd of=/dev/rsd0d bs=64m
0+40000 records in
0+40000 records out
2621440000 bytes transferred in 82.765 secs (31673291 bytes/sec)

• connect USB serial cable and

  cu -l /dev/dtyU0
  

• boot from above USB disk
• count down starts for 30 second, and interrupt by any key

  Welcome to the NetBSD/amd64 10.99.4 installation image
  =========================================================
  
  If you encounter a problem while booting, report a bug at
  https://www. NetBSD.org/.
  
   1. Install NetBSD
   2. Drop to boot prompt
  
  Choose an option; RETURN for default; SPACE to stop countdown.
  Option 1 wiil be chosen in 30 seconds.
  
  Option: [1]:2
  type "?" or "help" for help.
  > consdev com0
  

• select 2 for drop to boot prompt, and type

  > consdev com0
  

  now directs to serial connected window.
• then following will disable drmkms to avoid PR/kern 57154

  > userconf disable i915drmkms
  > boot netbsd
  

＠ now rebooting from installed system:

  \\-__,------,___.
   \\        __,---`  NetBSD/x86 BIOS Boot
    \\       `---,_.  Revision 5.11 (Sat May  6 17:21:51 UTC 2023)
     \\-,_____,.---`
      \\
       \\
        \\


     1. Boot normally
     2. Boot single user
     3. Drop to boot prompt

Choose an option; RETURN for default; SPACE to stop countdown.
Option 1 will be chosen in 0 seconds.     

Option: [1]:3

userconf disable i915drmkms
boot netbsd -s

Enter pathname of shell or RETURN for /bin/sh: 
We recommend that you create a non-root account and use su(1) for root access.
# mount -a
# cd /
# cat boot.cfg
menu=Boot normally:rndseed /var/db/entropy-file;boot
menu=Boot single user:rndseed /var/db/entropy-file;boot -s
menu=Drop to boot prompt:prompt
default=1
timeout=5
clear=1
#
# export TERM=xterm
# vi /boot.cfg

menu=Boot    normally:rndseed /var/db/entropy-file;userconf disable i915drmkms; boot
menu=Boot single user:rndseed /var/db/entropy-file;userconf disable i915drmkms; boot -s
menu=Drop to boot prompt:prompt
default=1
timeout=5
clear=1