27 lines
1.5 KiB
Plaintext
27 lines
1.5 KiB
Plaintext
An overview of the files on the /boot/firmware partition (the 1st partition
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on the SD card) used by the Ubuntu boot process (roughly in order) is as
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follows:
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* bootcode.bin - this is the second stage bootloader loaded by all pis with
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the exception of the pi4 (where this is replaced by flash
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memory)
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* config.txt - the first configuration file read by the boot process
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* syscfg.txt - the file in which system modified configuration will be
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placed, included by config.txt
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* usercfg.txt - the file in which user modified configuration should be
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placed, included by config.txt
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* start*.elf - the third stage bootloader, which handles device-tree
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modification and which loads...
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* uboot*.bin - various u-boot binaries for different pi platforms; these
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are launched as the "kernel" by config.txt
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* boot.scr - the boot script executed by uboot*.bin which in turn
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loads...
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* vmlinuz - the Linux kernel, executed by boot.scr
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* initrd.img - the initramfs, executed by boot.scr
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* meta-data - meta-data for cloud-init; usually just contains the
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instance id
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* network-config - network configuration for cloud-init; edit this to set up
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wifi access points and other networking settings
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* user-data - user-data for cloud-init; edit this to configure initial
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users, SSH keys, packages, etc.
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