Raspberries/buildDebianImRpi64
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Makefile: Optionally generate a bmaptool map file

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bmaptool(1), from the bmap-tools package, can write the used blocks
in a sparse disk image to media, while saving time and I/O by not writing
zeroes to the unused blocks. Typical use:

    make raspi2_bullseye.img.bmap raspi2_bullseye.img.xz
    ... upload those two files ...
    ... download those two files ...
    bmaptool copy raspi2_bullseye.img.xz /dev/disk/by-id/usb-Generic-_SD_MMC_*-0:0

Signed-off-by: Simon McVittie <smcv@debian.org>
This commit is contained in:
Simon McVittie
2021-04-24 23:20:12 +01:00
parent 09805aa49b
commit e6defffb23
2 changed files with 7 additions and 1 deletions
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.gitignore vendored
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@@ -1,4 +1,5 @@
# suggested build result and log filenames
raspi*.bmap
raspi*.img
raspi*.img.xz
raspi*.log