硬盘不存在。
Most OSs handle removable disks almost exactly like fixed disks - a new cartridge is formatted and an empty file system is generated on the disk.
多数操作系统处理可移动磁盘的方式与固定磁盘几乎是一样的——格式化一个新的盘碟，同时在盘上生成一个空的文件系统。
A magnetic disk unit in which some disks are fixed and others may be exchanged by an operator.
一种磁盘存储设备，其中一些磁盘是固定的，另一些则可以由操作员更换其中的盘片。
Finally, steps for recovering the files on fixed and flexible disks are illustrated with some examples.
用例子说明了软磁盘和硬磁盘上恢复文件的具体步骤。
Most computer systems have some way to store information permanently, whether it is on cassette tapes, floppy disks, or hard disk fixed inside the system unit.
无论是将信息存储在盒式磁带上，软盘上还是主机箱内的硬盘上，大多数计算机系统都能将信息永久性地保存起来。
Most computer sys tems have some way to store information permanently, whether it is on cassette tapes, floppy disks, or hard disk fixed inside the system unit.
无论是将信息存储在盒式磁带上，软盘上还是主机箱内的硬盘上，大多数计算机系统都能将信息永久性地保存起来。
Most computer sys tems have some way to store information permanently, whether it is on cassette tapes, floppy disks, or hard disk fixed inside the system unit.
无论是将信息存储在盒式磁带上，软盘上还是主机箱内的硬盘上，大多数计算机系统都能将信息永久性地保存起来。
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