nerd
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| BOOT_ORDER RPi4 |
Description |
| 0xf41 |
Try SD first, followed by USB-MSD then repeat (default if BOOT_ORDER is empty) |
| 0xf14 |
Try USB first, followed by SD then repeat |
| 0xf21 |
Try SD first, followed by NETWORK then repeat |
| BOOT_ORDER RPi5 |
Description |
| 0xf416 |
Try SD first, followed by USB-MSD, followed by NVMe then repeat (default if BOOT_ORDER is empty) |
| 0xf164 |
Try USB first, followed by NVMe, followed by SD then repeat |
| 0xf216 |
Try SD first, followed by NETWORK, followed by NVMe then repeat |
The BOOT_ORDER property defines the sequence for the different boot modes. It is read right to left and up to 8 digits may be defined.
| Value |
Mode |
Description |
| 0x0 |
SD CARD DETECT |
Try SD then wait for card-detect to indicate that the card has changed - deprecated now that 0xf (RESTART) is available. |
| 0x1 |
SD CARD |
SD card (or eMMC on Compute Module 4). |
| 0x2 |
NETWORK |
Network boot. |
| 0x3 |
RPIBOOT |
RPIBOOT - protocol that provides a virtual file system to the Raspberry Pi bootloader and GPU firmware. It’s therefore possible to boot Linux. |
| 0x4 |
USB-MSD |
USB mass storage boot. |
| 0x5 |
BCM-USB-MSD |
USB 2.0 boot from USB Type C socket (CM4: USB type A socket on CM IO board, using bootloader EEPROM from 2020-12-14 onwards). |
| 0x6 |
NVMe |
CM4 and RPi5 only: boot from an NVMe SSD connected to the PCIe interface. |
| 0xe |
STOP |
Stop and display error pattern. A power cycle is required to exit this state. |
| 0xf |
RESTART |
Restart from the first boot-mode in the BOOT_ORDER field i.e. loop |
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