# Fastboot Source: [https://docs.qualcomm.com/doc/80-70014-4/topic/fastboot.html](https://docs.qualcomm.com/doc/80-70014-4/topic/fastboot.html) Fastboot allows you to flash software images such as the boot loader and helps in system recovery. Fastboot is supported on Linux and Windows host machines. To enter Fastboot mode, you can use a hotkey for Fastboot. ## Fastboot using hotkey After powering on the device, press VOL-. The figure shows the Fastboot logs from the device entering the Fastboot mode.  ## Fastboot commands When Fastboot mode is detected, you can run the corresponding Fastboot commands. Table : Fastboot commands | Command | Usage | Example or use case | | --- | --- | --- | | `fastboot reboot` | Allows you to reboot the device. | A system reboot may be required after:
fastboot getvar
partition-size:systemfastboot getvar
partition-size:xbl_afastboot getvar kernelfastboot getvar max-download-sizexbl_config_a indicates the partitionxbl_config.elf is the software image