forgotten my root/sudo ubuntu touch password

[xpeer]

Hello, I have forgotten my root/sudo password for my Ubuntu Touch Xperia X. I would like to create a new root/sudo account and delete the old one. I don't care about the data. I would like to avoid a complete reinstall of the system.
can u help me?

[ikoz]

@xpeer You can boot to recovery, pull /home/phablet using adb, and reflash (with erase).
Try searching on the forums for backup methods to see how to adb pull

[Ian]

@xpeer It should be the pin/pass phrase you use to start your phone.