how long defrag work it???

hello. i wonder me about defragment! why need to long for defragment my pc??
i have windows vista home basic. why need it long time! can somebody say and
explain why it need long time defragment?? i hope i will get a help from
somebody!!

big great from urbani

"urbani_otto@hotmail.com"
<urbani_otto@hotmail.com@discussions.microsoft.com > wrote in message
news:94BF27AF-8674-4560-98C6-2A375DD90576@microsoft.com...
> hello. i wonder me about defragment! why need to long for defragment my
> pc??
> i have windows vista home basic. why need it long time! can somebody say
> and
> explain why it need long time defragment?? i hope i will get a help from
> somebody!!
>
> big great from urbani


Vista Defragmenter does it in the background, and as defragging is ALWAYS
work in progress, there is no end..

--
Mike Hall - MVP
http://msmvps.com/blogs/mikehall/default.aspx

Defragging a hard drive in the background takes a while.

If you work with text documents you can cut down on fragmentation
drastically by NOT using the Save command. The Save command writes only the
changes and grabs the first available free space on the disk. After a while
a file gets scattered all over the drive and it begins to take a while to
load a file due to the drive having to hop all over the disk to pull it into
memory. Use the Save As command instead. That writes a new copy of the
entire file and thus the file is contiguous and the read head does not have
to skip about.

"urbani_otto@hotmail.com"
<urbani_otto@hotmail.com@discussions.microsoft.com > wrote in message
news:94BF27AF-8674-4560-98C6-2A375DD90576@microsoft.com...
> hello. i wonder me about defragment! why need to long for defragment my
> pc??
> i have windows vista home basic. why need it long time! can somebody say
> and
> explain why it need long time defragment?? i hope i will get a help from
> somebody!!
>
> big great from urbani