我从头开始安装 Windows7 Ultimate，它警告说它可能会创建一个 100MB 的分区，然后再创建一个真正的东西所在的第二个分区。这使得成像更加复杂。
# fdisk -lu
Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xf1f75308
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 206847 102400 7 HPFS/NTFS
Partition 1 does not end on cylinder boundary.
/dev/sda2 206848 30722047 15257600 7 HPFS/NTFS …