dottgonzo

thanks for your attention the kernel is the standard one shipped with armbian jessie server 5.20 3.4.112-sun8i

There is an hardware watchdog module also on orange pi lite, one and zero?

Hi, From months i'm using the raspberry boards to monitor, control, log and to sending commands to remote stations. I've fighted against wifi devices that stop to work untill i've tried the raspberry pi3 and the edimax dongles, correct the sd errors (untill i've decided to run the boards with a readonly fs), installed the (software) watchdog, etc... but now everything works perfectly from months on more then 20 boards equipped with good power supply and sd. The last months i've tried to replace the raspberry pi board, with the orange pi lite board and armbian jessie 5.20 server. With the old version of orange pi pc, connected by ethernet, everything works fine, but with orange pi lite in cases of hard reset, it sometimes don't boot. I've tried with better power supply (2-3 models of good 3A 5v power supply), with no luck. Now finally see something happened while they is connected to a monitor and i don't know if this is the issue that happen when it don't boot, but i see that the system is frozen while systemd is showing " set cpufreq kernel... etc.." maybe this confirm what i've readed on other posts, there is something that don't works well between the voltage regulator and the cpu governor. Someone can confirm this issue? Everytime i've readed about this issue on orange pi one topics, is this the same issue discovered on orange pi lite? Someone can post me a link or a guide or a discussion where i can find something to fix this (and or others) problem, and if the fix exists, someone know if it is resolutive? This issue affect also the orange pi zero? Thanks for your attention and many thanks to anyone is working with those boards i hope to solve any problem and start to use the lite/zero boards for my projects, otherwise i have to wait for C.H.I.P.

restoring the first 1023k (as explained) works!! dd if=XXX.img of=/dev/sdd bs=1k count=1023 thanks!!

when i do the dd of the first 446 kb (the mbr) i'm coping the bootloader that is inside, or not!? update i'm reading the link that you suggested, seems that the part of the sd that i need to backup and restore is more then 446kb, seems like 1mb, or something like that.. thanks for your answer i will test it

Hi! I've coded a script that allows me to create a bootable disk of my favorite systems for different boards. it does a dd of the mbr (446 kb), then with fdisk and mkfs create the partitions, and at the end copy all the data for the root partition and others. This works for raspberry pi2 pi3, but for the orange pi it works only if the sd card is the same of the one used to backup the system, so i've investigated if the fstab or boot.cmd has some uuid of the disk but everywhere i found the device name instead of the uuid identifier. I don't understand why the orange pi lite don't boot with a different sd card if it have the same mbr and the same partitions. apparently everithing is the same of the original sd! The same method works for other boards!