Copy and boot Linux partition on same SSD disk

Install Ventoy on USB stick. https://www.ventoy.net/en/download.html

Copy Resquezilla.ISO to USB flash drive. https://rescuezilla.com/download

Boot from USB stick and choose Resquezilla.ISO.

BACKUP PARTITIONS BEFORE DOING ANYTHING!

Close Resquezilla and open PartedMagic. https://partedmagic.com/

Resize necessary partition, making space for copy.

Copy selected partition.

Delete original partition.

Reboot

DO EVERYTHING AT YOUR OWN RISK!

blkid

lsblk -o NAME,SIZE,FSTYPE,MOUNTPOINTS,UUID,PARTUUID

lsusb

mount

sudo fdisk -l

sudo hdparm -i /dev/sda