How to put another OS on SD card in MacBook Pro?

Question

macbook

I confess that I did not google for a whole day, but a superficial search did not bring any results.
The situation is as follows: there is a Macbook with Mac OS, everything is generally fine, the software needed for work and entertainment is all there. But sometimes you need to run something highly specialized for Windows or Linux. I don’t want to keep a virtual machine for the sake of this (it will only take up space most of the time with a dead weight). On my Eee Pc, I once solved a similar problem by having 3 chips with alternative OS installed on them and, if necessary, simply bugged from a flash drive.
Is it possible to do something similar with a MacBook? In the case of Asus, the GRAB was directly on flash drives and without a flash drive, Windows loaded without additional manipulations. In the case of the Macbook, I even agree that the menu with the OS is always displayed at boot. But it is imperative that the OS itself be on flash drives.
Is it possible? Thanks in advance for your replies

Answer 1

Did this trick with OpenSUSE Linux. I don't remember exactly about the full version, but the Live CD worked great. A live CD is written to a flash drive / SD card using Image Writer (a utility from OpenSUSE).

Answer 2

Just as you want, you can’t do this because of the specifics in the absence of a BIOS on poppies, you can put it in parallel in Bootcamp Windows, and then you will have the menu with the choice of operating system displayed at boot or not, as you wish.
Also, for all the time I used macOS / MacOS X, I did not find anything that caused the need for a separate Linux, because. macOS itself is already a *nix system, and most Linux applications are either already compiled for macOS and available in any package manager, such as brew, or they can be compiled personally from source.
The option to boot a LiveCD from an SD card is not correct, and not very convenient either. livecd are not designed for full-fledged work, they are rather made for familiarization, so it would be right to either use virtualization, in my practice VMWare Fusion, the best of Parallels Desktop and many times better than other analogues, does this best.
Regarding development under Linux, then the best option is VirtualBox, I always use it if I need an isolated linux environment.
And for website development, no one has come up with a better idea than Vagrant. (IMHO)