system installation - Can a Persistent Ubuntu install be made to the pendrive it was booted from?

A person has a computer with no HDD but 8GB RAM and USB3 port.

Also has 8GB USB3 pendrive with Ubuntu Live on it (non-persistent).

The computer is then started with the pendrive, with the toram option. " toram" is typed after pressing F6 or tab at startup. may need to press tab first.

Is the O/S that is running in RAM able to do a Persistent install to the original pendrive using the program mkusb so that there are persistent partitions

I am pretty sure this is not a Duplicate of: Can Ubuntu be installed to the pendrive it was booted from?

Edit:
Note to remove and reinsert pendrive removed as it is unnecessary.

Yes you can use Ubuntu running in RAM to make a Persistent install to the USB drive it was booted from, without a hard drive and only one USB stick.

Boot the USB drive using the toram option, that is at boot press tab, if it is a SDC install, if It is a UNetbootin install press tab at the boot menu.

Type " toram", (that is space toram) after the three dashes in the boot script ie --- toram.

After Ubuntu boots, download mkusb and the Ubuntu iso of your choice.

I prefer going to gparted to unmount the usb drive partition so I can see what is happening. Unmount it using your preference.

Open mkusb, point it at the downloaded iso, select persistent and point to the USB drive to be installed to.

Allow mkusb to run, selecting msdos or GPT and percentage of left over space for persistence.

Not too hard and hopefully useful for some poor guy without a hard drive and only one flash drive, and a good internet connection.

I have been doing a lot of work lately from a persistent Ubuntu pendrive with VBox on it running Windows 10.