Other features are recognizing multiple exe formats, support non-Multiboot kernels, multiple modules, menu interface, flexible CLI, automatic decompression of data, independent of drive geometry translations, logical block address mode, network booting, and remote terminal support.ĭas U-Boot is the first stage and second stage bootloader that can be loaded by BIOS or ROM from a supported boot device like SD card, flash memory, NAND, or SATA drive. In addition, it can be installed on Master boot record (MBR), GUID Partition Table (GPT), and Unified Extensible Firmware Interface (UEFI). It supports a wide range of operating systems, including GNU/Linux, BSD, Solaris, as well as Microsoft Windows. The proprietary kernels like Windows NT and DOS are supported via chain loading functions. GNU GRUB has backward compatibility for booting FreeBSD, OpenBSD, NetBSD, and Linux. The basic functions are for the end-users along with the rich functionalities to support kernel designers and experts. The kernel, in response, initiates the remaining operating system. The software is responsible for transferring and loading the controls to the current operating system kernel software like Linux or The Hurd. It is among the first few programs that run when a computer starts. GNU GRUB is a Multiboot boot loader that is originally derived from the project Grand Unified Bootloader.
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