I have tried to create a bootable installer for macOS Sierra to use on my MacBook Air that is broken and needs to reinstall macOS (The macOS X Lion installer that comes with the Macbook is br...

I have a VMware VM whose OS raw disk is backed up to AWS S3. I can create AMI from the OS disk raw using import-image. I cannot use import-image everytime because it is extremely slow and because I...

How to boot a linux kernel + dependencies and auto run a Qt application so the linux environment doesn't show up (only the Qt GUI is visible)? on x86 PCs should be able to run from RAM (of course...

*"for Retro computing purposes only"* Some programs are directly bootable and have a nice GUI e.g. Acronis OS Selector and Disk Director (screenshot) How can they run wihtout underlying OS? Can...

I'm using a barebones tutorial as the basis for an OS I'm working on, and it seems to be an older tutorial: it has be compiling the kernel down to a floppy image, and then loading it with GRUB. Ba...