This is quite an unusual scenario where you see an archlinux itself installed in the usb drive itself.

My Laptop can't use the sata anymore, the only option is to use a flash drive to have a memory.

I wrote the iso using my android phone using EtchDroid and tried to install the OS in the same flashdrive and it worked.

That was 3 months ago.

I can't do it now, it's saying the target is busy and I can't seem to find a way around it, I tried to remove the drive while I am running the archinstall because I knew it suspend the necessary files in the RAM.

Is there a way to install archlinux without going through the installation, I only need the minimal setup, no DE and anything?