阅读李忠的《x86汇编语言从实模式到保护模式》时，遇到了要将二进制文件写入VHD文件的问题。Windows环境可以使用随书工具FixVhdWr，在Linux或Mac下可以使用dd工具。

On linux, you may create the vhd file via virtualbox first, and execute the command following to copy the content of the mbr sector into the vhd file. dd if=c05_mbr.bin of=LEARN-ASM.vhd bs=512 count=1 conv=notrunc With the option ‘notrunc’, the size of the output file will not change when it is bigger than the input file’s.

virtual machine - how can we write binary file to a VHD file on mac - Stack Overflow

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dd if=二进制文件名 of=目标vhd文件 bs=512 count=1 conv=notrunc