Labels:book | bulletin board | earth | reckoner | sky OCR: TeachText receives its document without having to know the KIob details of 'the job From the application's point of view there is no difference whether the file was read from floppy, hard or file server. As you can see there are different levels of abstraction that the disk driver is responsible to maintain one For the os there are only volumes with each one being supported by driver. This driver knows how to translate volume level addresses into disk level addresses and how to issue appropriate commands to the disk drive to read or write the data. You now may imagine the importance of a disk driver for virtually every operation on the Mac. SCSI Manager 4.3 The World in the Old Days When the Macintosh Plus first introduced the SCSI connector as a standard feature of Macintosh computers the ...
