All process are same as upgrade 8 to 9
Update and upgrade first
apt-get update
apt-get upgrade
Remove the unused
apt-get autoremove
Run the dist upgrade
apt-get dist-upgrade
check current release infomration
lsb_release -a
Review the sources.list
cat /etc/apt/sources.list
Modify the sources.list to debian 10 source
sed -i 's/stretch/buster/g' /etc/apt/sources.list
Update current source repository
apt-get update
Check how many space should be used
apt-get -o APT::Get::Trivial-Only=true dist-upgrade
Check current space
df -H
All fine, then upgrade it
apt-get upgrade
Run the dist upgrade again
apt-get dist-upgrade
Remove the unused
apt-get autoremove
Check the latest version
lsb_release -a
Check the kernel version
uname -mrs
Install the neofetch to show the pretty system information
apt-get install neofetch
Run the command
neofetch