File and Disk Maintenance. File Systems. A file system defines the structure and the rules used to read, write, and maintain information stored on a disk. Which system used is determined by; Hardware Software Security needs Need for a dual-booting system. FAT???.
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file allocation table – where the OS records how the disk space is used
Sectors within a Track
A hard disk has extremely smooth metal or glass plates called “platters” (vs. the floppy mylar disk of a floppy disk).
Each platter is divided into tracks and sectors by the format operation, like a floppy disk, however the number of tracks and sectors is different. The number of tracks on a hard disk depends on the disk size and the manufacturer.
Physical hard drive problems:
Some error causing conditions to data that may be repairable:
You can check if you have lost clusters by clicking on a file and comparing the file size in explorer window to status bar files size.
Should be used on a regular basis
When a file is deleted:
So a Fragmented Disk has noncontiguous files. It takes longer to read a Fragmented Disk because the head must move around so much going to the various locations of the file clusters.
Prior to running Disk Defragmenter: