实例db 2 mpp有三个分区(0、10和20)。

An instance db2mpp exists with 3 partitions (0, 10, and 20).

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Grub将此硬盘引用为(hd 1, 3)，即第二块硬盘的第三个分区(disk 0是第一块硬盘)。

Grub references this disk as (hd1, 2), again the third partition of the second disk (disk 0 being the first disk, partition 0 being the first partition).

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一个分区键应该包括一至三个列。

A partitioning key should include one to three columns.

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