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# 制作文件系统镜像

```
sudo mkdir fs
sudo dd if=/dev/zero of=fs.img bs=1M count=4096
sudo mkfs.ext4 fs.img
sudo mount fs.img fs/
sudo cp -rfp src-fs/* fs/
sudo umount fs/
# check
sudo e2fsck -p -f fs.img
sudo resize2fs -M fs.img
```