Boot-Repair vs systemd-boot

Boot-Repair is free Linux software for restoring access to operating systems after boot failures. It addresses common GRUB problems and situations where Ubuntu or Windows no longer starts after another operating system is installed. Its Recommended Repair can reinstall GRUB and recover access to previously installed systems. Advanced options provide partition-table and boot-sector backups, GRUB setting changes, restoration of a Windows-compatible MBR, and filesystem repair. Boot-Repair can produce a Boot-Info diagnosis for sharing with helpers by email or on a forum. You choose whether to upload that report to Pastebin or keep it local; uploaded reports are described as expiring after some days. Boot-Repair-Disk starts the tool automatically and also includes OS-Uninstaller and Boot-Info. It can also run from Ubuntu, Debian, and derivative live environments. The project describes automatic backups and says the software is distributed without warranty.

systemd-boot is a UEFI boot manager that runs configured EFI images. Its menu displays configured entries, and a default can be selected through a pattern or the on-screen menu. If no timeout is set and no key is pressed, it starts the default entry immediately. Configuration files, kernels, initrds, and other EFI images must be on the EFI System Partition. Linux kernels need CONFIG_EFI_STUB to run directly as EFI images. Entry files can specify a title, version, machine ID, EFI image, kernel options, Linux kernel, and initrd. Hotkeys can select Linux, Windows, macOS, the EFI Shell, or entries numbered 1 through 9. EFI variables store settings such as the default, preferred, one-shot entry, and menu timeout. The systemd project says bootctl can install systemd-boot to the EFI System Partition. The project is free and open source, with GPL-2.0 and LGPL-2.1 licenses listed in its public repository. Its stated firmware support is UEFI, not BIOS, and it supports multiboot.