unbootable
Unbootable is an adjective used to describe a computer system or device that cannot complete the boot process to load an operating system. It includes failures occurring during POST (power-on self-test), the bootloader stage, kernel initialization, or early userland startup before a usable environment is presented. The term applies to desktops, laptops, servers, and embedded systems.
Common causes are hardware faults, firmware problems, and misconfigurations. Hardware issues can include a failing hard
Symptoms and diagnostics vary, from no video or POST errors to messages like file not found, operating
Remediation depends on the cause and platform. Data recovery should be considered if needed before changes.
Prevention focuses on regular backups, tested recovery plans, and proactive maintenance of firmware and drivers, along