升级磁盘为动态磁盘。

E. Upgrade the disk to a dynamic disk.

youdao

实际上，我在以后的一次POWER 6升级中测试了这种方法，它与从磁盘引导同样有效。

In fact, I tested this on a subsequent POWER6 upgrade and it worked equally well as just booting from disk.

youdao

只需升级一个磁盘，然后从它引导；当需要返回到另一个版本时，只需从另一个磁盘引导。

You simply upgrade one disk then boot off it, and when you need to go back to the other version, simply boot off that disk instead.

youdao