diff options
| author | Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi> | 2015-12-26 07:28:19 +0200 |
|---|---|---|
| committer | Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi> | 2016-02-01 10:46:17 +0200 |
| commit | 4cf9bf9eb00e85ab1b2d117b767aff81cb1c39b2 (patch) | |
| tree | 0475c22cd7f8fe91a566c27e78c95985ea9b05e4 /nixos/modules/installer/cd-dvd/sd-image.nix | |
| parent | b6621196e07429ed416ff426cc1e398cfc70a5d6 (diff) | |
sd-image.nix: Move the /boot partition up to 8M
Reportedly some ARM boards need some boot code at the start of a SD card
that could be larger than a megabyte. Change it to 8M, and while at it
reduce the /boot size such that the root partition should now start on a
128M boundary (the flash on SD cards really don't like non-aligned
writes these days).
Diffstat (limited to 'nixos/modules/installer/cd-dvd/sd-image.nix')
| -rw-r--r-- | nixos/modules/installer/cd-dvd/sd-image.nix | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/nixos/modules/installer/cd-dvd/sd-image.nix b/nixos/modules/installer/cd-dvd/sd-image.nix index 12b4f3045614..9eba542d8c91 100644 --- a/nixos/modules/installer/cd-dvd/sd-image.nix +++ b/nixos/modules/installer/cd-dvd/sd-image.nix @@ -30,7 +30,7 @@ in bootSize = mkOption { type = types.int; - default = 128; + default = 120; description = '' Size of the /boot partition, in megabytes. ''; @@ -66,10 +66,10 @@ in buildInputs = with pkgs; [ dosfstools e2fsprogs mtools libfaketime utillinux ]; buildCommand = '' - # Create the image file sized to fit /boot and /, plus 4M of slack + # Create the image file sized to fit /boot and /, plus 20M of slack rootSizeBlocks=$(du -B 512 --apparent-size ${rootfsImage} | awk '{ print $1 }') bootSizeBlocks=$((${toString config.sdImage.bootSize} * 1024 * 1024 / 512)) - imageSize=$((rootSizeBlocks * 512 + bootSizeBlocks * 512 + 4096 * 1024)) + imageSize=$((rootSizeBlocks * 512 + bootSizeBlocks * 512 + 20 * 1024 * 1024)) truncate -s $imageSize $out # type=b is 'W95 FAT32', type=83 is 'Linux'. @@ -77,8 +77,8 @@ in label: dos label-id: 0x2178694e - start=1M, size=$bootSizeBlocks, type=b, bootable - type=83 + start=8M, size=$bootSizeBlocks, type=b, bootable + start=${toString (8 + config.sdImage.bootSize)}M, type=83 EOF # Copy the rootfs into the SD image |