Ab Multiboot

A standard A/B device includes:

At its core, AB Multiboot is a partitioning and boot strategy that maintains two complete copies of a system’s firmware, kernel, and data partitions—labeled "Slot A" and "Slot B." ab multiboot

Unlike traditional dual-booting, where you choose an OS before the kernel loads, AB Multiboot allows you to switch between two system images while the device is running. The system reboots directly into the alternate slot without a bootloader menu delay. A standard A/B device includes: At its core,

This is the primary use case for A/B multiboot in consumer electronics (like Android phones): It ensures that even if a critical system

This is the most common implementation. It ensures that even if a critical system update has a bug or the battery dies during installation, the phone will always be able to boot into a working state.

True multiboot (e.g., dual-booting two different custom ROMs) is possible on A/B devices without repartitioning, using methods like: