I'm essentially trying to instal Kali to a USB drive. I'm not making a live kali with/without persistence but an actual full install of kali onto a usb drive.
Live usb with persistence is a little too limiting in my case, I usually work on ubuntu and figured I could just switch to Kali and call it a day.
Description of the current situation
My macbook pro already has a dual boot with windows 10 and mac os X. I'm trying to create a usb kali install that will be recognized by the mac bootloader.
The way I'm going about installing Kali is setting up a Vbox to use a physical hard drive (usb) as a main disk and then mounting kali live to the virtual cd and installing it directly to the stick.
Works great kinda.
Problem
The problem is that by default grub will install to the MBR and recent versions of macbook seem to hate this (I never see the usb along side my other partitions when I boot with option). I imagine I need some sort of EFI compatibility/configuration but am not too sure how to proceed from here.
Most of the information I find online are all about making live usbs and not actual installations. There seems to be a way using rEFInd on the host but I'm looking for an option that would make my usb bootable on any device.
Any help would be appreciated.