ref: 19aafc17152543fb0e4ad29b1cf229cd1fb32980
parent: ef23b5e72a084e578c10d02a2d79952c719e2b01
author: Sigrid Solveig Haflínudóttir <sigrid@ftrv.se>
date: Sun Jan 15 16:31:34 EST 2023
mnt-reform: early boot interrupt & solving issues
--- a/mnt-reform.md
+++ b/mnt-reform.md
@@ -24,4 +24,8 @@
3) copy `plan9.ini`, `9reform.u` and 9front's `/sys/src/boot/reform/boot.scr` to `/n/emmc/`
4) download U-Boot build with early screen enabled: `hget https://ftrv.se/_/mntre-flash-20230115.bin > /tmp/flash.bin`, `md5sum /tmp/flash.bin`, you should get `63025b864faf596dc74e3a1677ad3f59`
5) update U-Boot: `dd -if /tmp/flash.bin -of /dev/sdO1/data -bs 1024 -oseek 33 -trunc 0 -conv sync`
-6) the jumper under the heatsink should be positioned to booting from EMMC, this is not the default when the laptop is purchased
+6) the switch under the heatsink should be positioned to booting from EMMC, this is not the default when the laptop is purchased
+
+Early boot may be interrupted with a key press. The current boot process is to try USB drives first, then an SD card, and finally boot from EMMC.
+
+If something went terribly wrong and you think the device is bricked, fear not! Change the heatsink boot switch into SD card boot mode and go from there.