Let's say you have an Ubuntu/Mint OS and other Linux and Windows OS in a multi-boot. BIU is the boot manager. You would like to duplicate an Ubuntu OS. Have a look in the ESP. you will see \efi\ubuntu.001. This folder contains the Ubuntu booting files. Use an IFL UFD. Boot into IFL. Copy the Ubuntu booting files to another folder. Use tbosdt... tbosdt list hd 0 open fs 0: 0 0x1 0: md /efi/ubuntu copy /efi/ubuntu.001/* /efi/ubuntu -s close fs 0: Open the IFL app and choose Copy. Copy the Ubuntu partition to Free Space on any of your drives. Use these Restore Options... Change GUID, Change Volume SN, Assume Original HD Open a Terminal... blkid, mouse copy the uuid of the copied Linux partition (not the original). (DON'T USE PARTUUID). Leave Terminal open. Open Partition work and select the ESP... Edit File, EFI, ubuntu, paste the uuid into ubuntu\grub.cfg (use ctrl-v). (over write the uuid that you see) Save Restart into BIU. You will see a new Boot Item called ubuntu. In Boot Edit give this a better name. In the ESP you will have a new folder, \efi\ubuntu.002 Go ahead and boot the copied Ubuntu.
