Hi,
I would like to know, how to backup / restore u-boot manually (my case is C2 + SD Card, but I assume it will be similiar for all devices).
I understand, I can restore u-boot by
mount -o remount,rw /flash
dd if=Odroid_C2_u-boot of=/dev/mmcblk0 conv=fsync bs=1 count=112 status=none
dd if=Odroid_C2_u-boot of=/dev/mmcblk0 conv=fsync bs=512 skip=1 seek=1 status=none
mount -o remount,ro /flash
But I am a bit struggling, how to make “live backup”.
parted /dev/mmcblk0 'unit s print'
Model: SD SA16G (sd/mmc)
Disk /dev/mmcblk0: 30375936s
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 2048s 2099199s 2097152s primary fat16
2 2099200s 30361599s 28262400s primary ext4
dd if=/dev/mmcblk0 of=/storage/bootloader.bin bs=512 count=2048
bootlader.bin is a bit different from the original bootloader (tested on 8.99.1)
.
.
