If you can, it is most likely have one or two bad files or a bad sector on the hard disk drive that leading to not start correctly.
如果可以，那么最可能的就是有一两个坏文件，或硬盘驱动器上有坏扇区，从而导致无法正常启动。
If the device contains the optional hard disk drives, it will have two additional fans.
如果设备包含可选硬盘驱动器，将会有额外两个风扇。
If you have a newer-style 64-bit PC, which can use more memory, you'll need at least two gigabytes of memory and 20 gigabytes of free hard disk space.
如果你有一个更新款的64位电脑（这种电脑可以利用更多的内存），你将需要至少2G的内存和20G的可用硬盘空间。
The MacBook comes equipped with a 250 GB hard disk drive, 8x "SuperDrive, " Gigabit Ethernet, two USB ports and mini DisplayPort to connect an external monitor.
MacBook笔记本配有250G硬盘驱动器，8倍光驱，超高速以太网，2个USB接口，以及与外接显示器相连的迷你显示端口。
The hard disk must contain at least two partitions: the operating system partition and the active system partition.
硬盘必须包含至少两个分区：操作系统分区和系统磁盘分区。
The hard disk must contain at least two partitions: the operating system partition and the active system partition.
硬盘必须包含至少两个分区：操作系统分区和系统磁盘分区。
应用推荐