User:Oogwaymaki/Kernel Installation

Installing Megi's pre-compiled kernel

This tutorial is based on Debian Linux package management:

Install dependencies:

• u-boot-tools allows you to make images
• rsync allows you to copy and backup

# apt-get update
# apt-get install rsync u-boot-tools

First, download the the PinePhone CE (1.2) Kernel:

# wget https://xff.cz/kernels/5.8/pp2.tar.gz

Extract the kernel:

Create a separate folder for organization and separation: Extract the a "tar" "gz" file using tar.

# tar -zxvf pp2.tar.gz 

A default Mobian Installation looks like this:

Device     Boot  Start     End Sectors   Size Id Type
/dev/sda1  *      1953  250000  248048 121.1M 83 Linux
/dev/sda2       250001 7421874 7171874   3.4G 83 Linux

Notice the small size on the /boot partition.

This means we probably will have to, either kill the partition or resize both partitions:

Easiest thing to do:

Please all all the new files on the /dev/sda2 (they'll probably be more than 121 M)

Next we need to update the initrd image, to have the new modules, (the initrd image is a RAM disk helping the system to boot and needs kernel drivers while booting):

How to get and update initrd image:

Mount Mobian boot image: Make sure your the root user for this for ease of installation: Delete the old kernel modules and put the new latest ones there

# mkdir debianboot
# mount /dev/sda1 /media/debianboot
# cd /
# mkdir -p j .
# cd /usr/src/initrdimage
# cp /media/debianboot/initrd.img-5.7-pinephone  .
# zcat initrd.img-5.7-pinephone | cpio -idmv 
# rm initrd.img-5.7-pinephone 
# cd /usr/src/initrdimage/lib/modules
# rm -rf /usr/src/initrdimage/lib/modules/5.7-pinephone
# rsync -avh pp2-5.8/modules/lib/modules/ initrd/lib/modules/

Repackage the Mobian Boot Image after new kernel modules installed and copy over to main mobian image now

# find . | cpio -o -c | gzip -9 > initrd.img-5.8-pinephone
# mkdir /media/mobianroot
# mount /dev/sda2 /media/mobianroot
# cp initrd/initrd.img-5.8-pinephone /media/mobianroot/boot/

References

• https://access.redhat.com/solutions/24029