Creates a Fedora usb drive that will boot on Apple M-series systems (that have Asahi Linux installed on the internal hard drive!!!)

Fedora Package Install

dnf install arch-install-scripts bubblewrap dosfstools e2fsprogs gdisk mkosi openssl pandoc rsync systemd-container

Notes

• The root password is fedora
• The qemu-user-static package is needed if building the image on a non-aarch64 system
• This project will work with mkosi versions less then or equal to mkosi v23 If needed, you can always install a specific version via pip
  python3 -m pip install --user git+https://github.com/systemd/mkosi.git@v23

To build a minimal Fedora image and install it to a usb drive, simply run:

./build.sh -d /dev/sda

note: substitute /dev/sda with the device id of your usb drive

If you've previously installed this Fedora image to the usb drive, you can wipe the drive and install a new image without having to repartition/reformat the drive by providing the -w argument

./build.sh -wd /dev/sda

Once the drive is created, you can locally mount, unmount, or chroot into the usb drive (which contains 3 partitions) to/from mnt_usb/ with

./build.sh mount
./build.sh umount
./build.sh chroot

note: mounting the usb drive is useful for inspecting the contents of the drive or making changes to it

Setting up WiFi

To connect to a wireless network, use the following sytanx: nmcli dev wifi connect network-ssid

An actual example: nmcli dev wifi connect blacknet-ac password supersecretpassword

Rescuing a Fedora install

Two helper scripts have been added to this image
Which are useful if you have Fedora installed on the internal drive:

/usr/local/sbin/chroot.asahi
/usr/local/sbin/umount.asahi

1. chroot.asahi will mount the (Fedora) internal drive under /mnt and will arch-chroot into it.
   To exit from the chroot environment, simply type ctrl+d or exit

2. umount.asahi will unmount the internal drive from /mnt

Booting the USB drive

There are two methods (that I use) to boot a usb drive: u-boot eficonfig and modifying the grub config

1. u-boot eficonfig
   Power on the system while the usb drive is connected.

type eficonfig at the u-boot prompt

then go to "Change Boot Order"

Now change the boot order.
I would check usb0 as well as the First Fedora entry.
note: to get usb0 on the top (like in the pic). I deselected everything except for usb0 and hit Save.
I then went back to "Change Boot Order" (this time usb0 was on top) and selected Fedora
I'm pretty sure that you need usb0 to be on top.

From here, simply hit Save, then Quit (you could also hit the escape key twice). This will bring you back to the u-boot prompt.
From the u-boot prompt: simply type run bootcmd or bootd to boot the system.

You should now be presented with the grub menu of the usb drive. What "should" happen at this point is that
if you boot with the usb drive connnected, the usb drive should boot. If usb drive is disconnected, the system should
boot from the internal drive.

2. modifying the grub config (on the internal drive) This couldn't be easier. After creating the usb drive, ensure the usb drive is plugged in and run:
   grub2-mkconfig -o /boot/grub2/grub.cfg
   You should now see a /dev/sda3 entry in the grub menu when booting from the internal drive.