Migrate to new server, how?

[Lee66]

Hello to all IT Wizards! today I managed to installed proxmox to an external SSD (through USB) running on top of my laptop, thanks to this guy @CraftComputing.
Virtualize Everything! - Proxmox Install Tutorial
https://www.youtube.com/watch?v=azORbxrItOo&t=164s

my questions are, let's say I upgrade the current host (my laptop) to a desktop with higher spec. how can I do it?
I tried plugging the proxmox external installed external ssd to another laptop. this did not work. the web interface won't work.
I assume its due to different IP / it detected the hardware changed?

 

[dcsapak]

I assume its due to different IP / it detected the hardware changed?

the problem is probably a differently named nic

you can find that out by logging into the new host and typing: 'ip link' which shows the network interfaces
now adapt the file /etc/network/interfaces with the new name and reboot