Just for general info ...
>(What is it, 20 seconds?)
that is for hard reset, when the computer gets into a confused state and because of battery retains it
OR unplug battery 1/2-1 day OR press reset button (if it works)
Put an A64 sd in (and try to boot) , you will see what I am talking about
Hard power off is 6-7 seconds
Always try hard pwr-off 1st, then hard reset (and with a KNOWN good bootable SD inserted)
With the power presses, you at least don't have to take off back
For those who like to tinker, maybe this is not an advantage
Me. I just like stuff to work
-----
And, BTW nearly ALL sd images have a uboot in the first 16M, if the 1st part starts at 32768 that is to make room for uboot
This uboot (on sd) may never be used, if the uboot on emmc is defective it will interfere with ANY boot
You could check https://github.com/pyavitz/debian-image-builder ,,, at the top of the readme.md is a link to requested images
there is a pbp image in there
>(What is it, 20 seconds?)
that is for hard reset, when the computer gets into a confused state and because of battery retains it
OR unplug battery 1/2-1 day OR press reset button (if it works)
Put an A64 sd in (and try to boot) , you will see what I am talking about
Hard power off is 6-7 seconds
Always try hard pwr-off 1st, then hard reset (and with a KNOWN good bootable SD inserted)
With the power presses, you at least don't have to take off back
For those who like to tinker, maybe this is not an advantage
Me. I just like stuff to work
-----
And, BTW nearly ALL sd images have a uboot in the first 16M, if the 1st part starts at 32768 that is to make room for uboot
This uboot (on sd) may never be used, if the uboot on emmc is defective it will interfere with ANY boot
You could check https://github.com/pyavitz/debian-image-builder ,,, at the top of the readme.md is a link to requested images
there is a pbp image in there