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Align partition start boundaries to 8M

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Higher-capacity cards (particularly Raspberry Pi 128GB A2) have an 8MB
preferred erase size, which is a good indication of the flash block size.

Other large cards may also benefit.

Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
This commit is contained in:
Jonathan Bell 2025-03-12 14:38:13 +00:00 committed by XECDesign
parent e071d0de36
commit f621f9e279
1 changed files with 1 additions and 1 deletions
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export-image/prerun.sh
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@ -13,7 +13,7 @@ BOOT_SIZE="$((512 * 1024 * 1024))"
ROOT_SIZE=$(du -x --apparent-size -s "${EXPORT_ROOTFS_DIR}" --exclude var/cache/apt/archives --exclude boot/firmware --block-size=1 | cut -f 1) ROOT_SIZE=$(du -x --apparent-size -s "${EXPORT_ROOTFS_DIR}" --exclude var/cache/apt/archives --exclude boot/firmware --block-size=1 | cut -f 1)
# All partition sizes and starts will be aligned to this size # All partition sizes and starts will be aligned to this size
ALIGN="$((4 * 1024 * 1024))" ALIGN="$((8 * 1024 * 1024))"
# Add this much space to the calculated file size. This allows for # Add this much space to the calculated file size. This allows for
# some overhead (since actual space usage is usually rounded up to the # some overhead (since actual space usage is usually rounded up to the
# filesystem block size) and gives some free space on the resulting # filesystem block size) and gives some free space on the resulting