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+These are pretty easy to run into issues with not necessarily my Flake, can be, but could also just be Flakes or NixOS in general.
+
+## No default/fallback boot loader
+
+```
+File system "/boot" is not a FAT EFI System Partition (ESP) file system.
+systemd-boot not installed in ESP.
+No default/fallback boot loader installed in ESP.
+```
+
+This error is caused by installing using MBR and not UEFI. It is important to use GPT and UEFI when installing the system. If you get this error just reinstall ensuring you are correcting booting and installing using UEFI.