How to resize a netcup VPS disk after contract upgrade

README.md

Resizing a netcup VPS disk after upgrading the contract to a bigger one

From Server Control Panel

Boot rescue image

• Change boot order to network first: Settings -> Boot Order, Save
• Control -> Shutdown. Use Forced Poweroff if Shutdown doesn't work.
• Boot into rescue system: Media, "Rescue System" tab, Enable Rescue System. Take note of root pw
• Control -> Start

Run gparted and resize disk

• Connect to console: Screen, or from General, click on pic of it
• Press Enter to get into shell
• startx
• Right-click into the empty workspace, choose Applications->Shells->Bash, then run gparted
• OR, if that does not work, click "Show Keyboard", click "F2", then run gparted
• Choose to "Fix GPT" by pressing Enter (left mouse click didn't work for me), then resize /dev/sda3 to full disk. You may need to use Tab and arrow keys to navigate so you can choose that partition and then choose to resize. Mouse works sometimes, haven't figured when it does and doesn't.
• Apply and confirm, wait for gparted to do its work

Boot installed OS

• Change boot order back to "Hard Disk" first: Settings -> Boot Order, Save
• Control -> Powercycle
• SSH into system
• df -h to verify that GParted did its job

Thank you very very much that was helpful !!

Thanks for this! In the second section, the only option was to use -->Partition --> Check, then click on the green check mark to apply the changes. Editing to add that I was on Debian 11.