Increase Ubuntu Partition Size
How to increase Ubuntu partition size after expanding the underlying disk
Check disk layout
lsblkFor LVM-based Ubuntu
Your root partition (/) must sit inside an LVM logical volume (e.g. sda3 containing ubuntu-vg/ubuntu-lv)
Grow partition to encompass new unallocated disk space
The following example assumes your active device name is /dev/sda3. Adjust if your configuration is different.
sudo growpart /dev/sda 3Resize LVM Partition Volume (PV) to recognise expanded partition
The following example assumes your active device name is /dev/sda3. Adjust if your configuration is different.
sudo pvresize /dev/sda3