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Since disk 1 (/dev/sda) has more than 1 partition, GParted is probably a useful tool for this task:
https://gparted.org/display-doc.php%3Fname%3Dmoving-space-between-partitions
NMIS VMs' using Logical
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Volume Manager (LVM)
The resizing procedure is quite simple, for size increases at least. The two required steps are:
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