Apple IIe - Page 172

172 Apple lie Users Handbook
million bytes. The hard disk itself is made of a rigid material with
a magnetic coating . The disk drive and the hard disk are separate
units. The operator can remove one hard disk and replace it with
another.
Winchester Disk Drives
Winchester disk drives are designed so that from 6 to 10 times
more data can be stored on their surface than on a standard
floppy diskette . Winchester disks must be kept very clean as they
are extremely vulnerable to dust , dirt and smoke.
Since they must be kept so clean , Winchester disks must be
sealed inside of the disk drive. This means that Winchester disks
cannot be changed.
Since Winchester disks cannot be removed, floppy disk systems
often are used in conjunction with Winchester disks to allow for
back-up storage. Winchester disk systems are generally used
with microcomputers rather than hard disk systems. A Win-
chester drive is shown in Illustration 5-1.