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11 lines
566 B
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11 lines
566 B
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GRUB2 (https://www.gnu.org/software/grub) has the most advanced support of
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booting from BTRFS with respect to features.
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U-Boot (https://www.denx.de/wiki/U-Boot/) has decent support for booting but
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not all BTRFS features are implemented, check the documentation.
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In general, the first 1MiB on each device is unused with the exception of
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primary superblock that is on the offset 64KiB and spans 4KiB. The rest can be
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freely used by bootloaders or for other system information. Note that booting
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from a filesystem on :doc:`zoned device<Zoned-mode>` is not supported.
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