照你说的,最常见的可能性是硬盘,你是讲macbook pro吧, mac pro是台式机来的。
试一下重置,不行的话就真的是硬盘了。
Resetting NVRAM / PRAM
1.Shut down your Mac.
2.Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3.Turn on the computer.
4.Press and hold the Command-Option-P-R keys before the gray screen appears.
5.Hold the keys down until the computer restarts and you hear the startup sound for the second time.
6.Release the keys.作者: 别爱我1982 时间: 2013-8-24 14:45:59