mirror of
https://github.com/Start9Labs/start-os.git
synced 2026-03-26 18:31:52 +00:00
74 lines
2.5 KiB
Bash
Executable File
74 lines
2.5 KiB
Bash
Executable File
#!/bin/bash
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set -e
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echo 'This script will only work on a card that has previously had a full image written to it.'
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echo 'It will *only* flash the ext4 portion (`green` partition) of the img file onto the card.'
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echo 'The product key, disk guid, and kernel data will *not* be affected.'
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read -p "Continue? [y/N]" -n 1 -r
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if ! [[ "$REPLY" =~ ^[Yy]$ ]]; then
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exit 1
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else
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echo
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fi
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if ! which pv > /dev/null; then
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>&2 echo 'This script would like to use `pv` to show a progress indicator, but it is not installed.'
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if which apt-get > /dev/null; then
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read -p "Install? [y/N]" -n 1 -r
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echo
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if [[ "$REPLY" =~ ^[Yy]$ ]]; then
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sudo apt-get install pv
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fi
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elif which pacman > /dev/null; then
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read -p "Install? [y/N]" -n 1 -r
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echo
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if [[ "$REPLY" =~ ^[Yy]$ ]]; then
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sudo pacman -S pv
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fi
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else
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>&2 echo 'This script does not recognize what package manager you have available on your system.'
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>&2 echo 'Please go install the utility manually if you want progress reporting.'
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fi
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fi
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if ! test -e /dev/disk/by-label/green; then
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>&2 echo '`green` partition not found'
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exit 1
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fi
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export TARGET_PARTITION=$(readlink -f /dev/disk/by-label/green)
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if [[ "$TARGET_PARTITION" =~ ^/dev/loop ]]; then
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>&2 echo 'You are currently flashing onto a loop device.'
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>&2 echo 'This is probably a mistake, and usually means you failed to detach a .img file.'
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read -p "Continue anyway? [y/N]" -n 1 -r
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if ! [[ "$REPLY" =~ ^[Yy]$ ]]; then
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exit 1
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else
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echo
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fi
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fi
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export SOURCE_DEVICE=$(sudo losetup --show -fP eos.img)
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sudo e2fsck -f ${SOURCE_DEVICE}p3
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sudo resize2fs -M ${SOURCE_DEVICE}p3
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export BLOCK_INFO=$(sudo dumpe2fs ${SOURCE_DEVICE}p3)
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export BLOCK_COUNT=$(echo "$BLOCK_INFO" | grep "Block count:" | sed 's/Block count:\s\+//g')
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export BLOCK_SIZE=$(echo "$BLOCK_INFO" | grep "Block size:" | sed 's/Block size:\s\+//g')
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export FS_SIZE=$[$BLOCK_COUNT*$BLOCK_SIZE]
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echo "Flashing $FS_SIZE bytes to $TARGET_PARTITION"
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if which pv > /dev/null; then
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sudo cat ${SOURCE_DEVICE}p3 | head -c $FS_SIZE | pv -s $FS_SIZE | sudo dd of=${TARGET_PARTITION} bs=1M iflag=fullblock oflag=direct 2>/dev/null
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else
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sudo cat ${SOURCE_DEVICE}p3 | head -c $FS_SIZE | sudo dd of=${TARGET_PARTITION} bs=1M iflag=fullblock oflag=direct
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fi
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echo Verifying...
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export INPUT_HASH=$(sudo cat ${SOURCE_DEVICE}p3 | head -c $FS_SIZE | sha256sum)
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export OUTPUT_HASH=$(sudo cat ${TARGET_PARTITION} | head -c $FS_SIZE | sha256sum)
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sudo losetup -d ${SOURCE_DEVICE}
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if ! [[ "$INPUT_HASH" == "$OUTPUT_HASH" ]]; then
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>&2 echo Verification Failed
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exit 1
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fi
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echo "Verification Succeeded"
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