fix minor bugs in build script
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@ -77,12 +77,11 @@ PRs and contributions are welcome to help implement these features.
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- Github Codespaces is not supported at the moment
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- A USB drive that is at least 8GB in size
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- At least 20GB of free disk space
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- An x86-based Chromebook
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### Build Instructions:
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1. Find the board name of your Chromebook. You can search for the model name on [chrome100.dev](https://chrome100.dev/).
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1. Clone this repository and cd into it.
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2. Run `sudo ./build_complete.sh <board_name>` to download the required data and build the disk image.
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2. Run `sudo ./build_complete.sh <board_name>` to download the required data and build the disk image. If you have an ARM-based Chromebook, pass `arch=arm64` in as an option.
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Alternatively, you can run each of the steps manually:
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1. Grab a Chrome OS RMA Shim from somewhere. Most of them have already been leaked and aren't too difficult to find.
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@ -26,7 +26,7 @@ desktop="${args['desktop']-'xfce'}"
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data_dir="${args['data_dir']}"
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arch="${args['arch']-'amd64'}"
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needed_deps="wget python3 unzip zip git debootstrap cpio binwalk pcregrep cgpt mkfs.ext4 mkfs.ext2 fdisk rsync depmod findmnt"
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needed_deps="wget python3 unzip zip git debootstrap cpio binwalk pcregrep cgpt mkfs.ext4 mkfs.ext2 fdisk rsync depmod findmnt lz4"
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if [ "$(check_deps "$needed_deps")" ]; then
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#install deps automatically on debian and ubuntu
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if [ -f "/etc/debian_version" ]; then
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@ -32,7 +32,7 @@ extract_initramfs_arm() {
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#extract the kernel lz4 archive from the partition
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local binwalk_out="$(binwalk $kernel_bin --run-as=root)"
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local lz4_offset="$(echo "$binwalk_out" | pcregrep -o1 "(\d+).+?LZ4 compressed data")"
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local lz4_offset="$(echo "$binwalk_out" | pcregrep -o1 "(\d+).+?LZ4 compressed data" | head -n1)"
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local lz4_file="$working_dir/kernel.lz4"
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local kernel_img="$working_dir/kernel_decompressed.bin"
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dd if=$kernel_bin of=$lz4_file iflag=skip_bytes,count_bytes skip=$lz4_offset
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