Disk Defargmentation Question

  Proxy Worm 14:36 25 Oct 03
Locked

Whats the point of defrag and whats the what does contiguous files mean. AS that what it picks up on my XP?

  expertec 14:40 25 Oct 03

fragmentation Last modified: Friday, March 22, 2002

(1) Refers to the condition of a disk in which files are divided into pieces scattered around the disk. Fragmentation occurs naturally when you use a disk frequently, creating, deleting, and modifying files. At some point, the operating system needs to store parts of a file in noncontiguous clusters. This is entirely invisible to users, but it can slow down the speed at which data is accessed because the disk drive must search through different parts of the disk to put together a single file.
In DOS 6.0 and later systems, you can defragment a disk with the DEFRAG command. You can also buy software utilities, called disk optimizers or defragmenters, that defragment a disk.

(2) Fragmentation can also refer to RAM that has small, unused holes scattered throughout it. This is called external fragmentation. With modern operating systems that use a paging scheme, a more common type of RAM fragmentation is internal fragmentation. This occurs when memory is allocated in frames and the frame size is larger than the amount of memory requested.

  The Spires 14:46 25 Oct 03

If you imagine your hard drive programs being split up into number say (it?s far more complicated) from 1 - 100, a new program may write and use number 30 - 45 as it's installed. As time passes and that program is written to all the number get jumbled up like a pack of cards shuffled. So although windows knows what numbers the program you want are on it'd having to move all around the hard drive to get them taking longer as time goes on. You won't ever loose your data but it just takes longer as the numbers end up in a random order. Defragging sorts the numbers out into logical order again and your hard drive can get the data in a stream rather than hunt and peck. Better for you, better for your hard drive mechanics.

  DieSse 14:48 25 Oct 03

Contiguous = all together in one block, rather than split up into pieces in different places (on the disk)

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