vmlinuz to vmlinx

The vmlinuz isn't just the compressed kernel, it's complete bootable image including the decompressor. To get just the image search for the GZ signature - 1f 8b 08 00. Now i'm sure there are scripts for it somewhere, but you can do it old-fashioned way - in my case:

# od -A d -t x1 vmlinuz-3.0.0-32-virtual | grep '1f 8b 08 00'
0015968 48 8d 83 00 b7 47 00 ff e01f 8b 08 00 00 00 00

so the image begins at15968+9 => 15977 . Then just copy the image from the point and decompress it -

#dd if=vmlinuz bs=1 skip=15977 | zcat > vmlinux
记录了4718407+0 的读入
记录了4718407+0 的写出

4718407字节(4.7 MB)已复制，6.02327 秒，783 kB/秒

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