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Extend Linux Root (Encrypted) Different Disk or Same

 

Get the partition from fdisk -l ==> /dev/sda**
Next pvcreate /dev/sda**  
Check groupname of root (Gparted)
Using vgextend nameofgroup /dev/sda** == > Example==> vgextend crypto_kali /dev/sda9
Confirm Using pvscan
Get the mount point of root from fdisk -l ==> /dev/mapper/**
Using lvextend -l +100%FREE /dev/mapper/**
resize2fs /dev/mapper/**
Done.   

Example
# fdisk -l

/dev/sda9  14509 14699  183980   1.8G Linux filesystem

Disk /dev/mapper/crypto_kali-root: 4.72 GiB, 480205 bytes, 9379 sectors
Units: sectors of 1 * 5 = 5 bytes

# pvcreate /dev/sda9   
# vgextend crypto_kali /dev/sda9
# lvextend -l +100%FREE /dev/mapper/crypto_kali-root
# resize2fs /dev/mapper/crypto_kali-root    

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