If the video signal is there, but you only see 3 or 4 images of raspberries, then the kernel is being loaded, but "root=." is wrong and you need to fix cmdline.txt. If there's no video signal and green/red LEDs are on, but don't flash, the kernel isn't found, so you still have a problem with /boot. edit /mnt/sd/cmdline.txt, you need to fix "root=." with something that works, e.g. As such, if youre using something like docker, where the cache might be very out of date, you should always run apt-get update before installing any packages. What is the command for Arch Linux to update the packages before installing a new package For instance, I know that in Ubuntu, I do this in a terminal window: sudo apt-get update sudo apt-get What about in Arch Linux I came across a couple of versions, but they don't seem agree with each others.copy all files from the image to the sd card: sudo cp -a /mnt/image/* /mnt/sd/ ![]() mount the image's boot partition with the offset that fdisk just told you: sudo mount -o loop,offset=$((8192*512)) *img /mnt/image check the contents of the image: fdisk -l *.img ![]() resize partitions with gparted (or whatever tool you prefer) I shrinked the ext4 root partition by 200MB at its beginning, so that I could enlarge the fat /boot partition by 200 MB Here's what one can do in situations like these: Later I figured out that /boot only contained 3 files after the failed upgrade, so I couldn't boot anymore. ![]() I also (soft) bricked mine when upgrading from stretch to buster, probably because /boot was only ~65MB.
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