If you have a PReP boot partition, use it.
如果有一个PReP引导分区，则请使用它。
That’s because you can’t directly boot from anywhere inside an extended partition.
因为你不能从扩展分区启动系统。
The partition table is located in the master boot record (MBR) of a disk.
分区表位于磁盘主引导记录（MBR）之中。
The partition table is located in the master boot record (MBR) of a disk.
分区表位于磁盘主引导记录（MBR）之中。
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