[poll=1]
用dd备份mbr
备份 dd if=/dev/hdx of=/boot/MBR.bak bs=512 count=1 (512 or 446)恢复 dd if=/boot/MBR.bak of=/dev/hdx bs=512 count=1 (512[......]
备份 dd if=/dev/hdx of=/boot/MBR.bak bs=512 count=1 (512 or 446)恢复 dd if=/boot/MBR.bak of=/dev/hdx bs=512 count=1 (512[......]