G
Guest
what exactly does that mean when the files or folders are compressed
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
D
Doug Knox MS-MVP
These files are "compressed" using the built-in file compression capability of the NTFS file system. They're decompressed on the fly as needed.
Open Help and Support and search for "file compression", without the quotes.
Open Help and Support and search for "file compression", without the quotes.
K
Ken Blake, MVP
Dapper_don2k3 said:what exactly does that mean when the files or folders are compressed
To compress a file means to make it smaller, so it takes up less disk space.
That can be done in a variety of ways, but here's one simple example:
You could replace a string of 25 spaces in a row with a code saying
(space25).
P
Phil Weldon
'Dapper_don2k3' wrote:
| what exactly does that mean when the files or folders are compressed
_____
It means the files or folders are encoded so that less storage is needed.
Word processing files are reduced in size by quite a lot, program files by
much less.
The 'compression' is 'lossless'; decompressing a compressed file gives the
complete original, identical in every way. Examples of this 'lossless'
compression/decompression are .zip files and the compression/decompression
built into the Windows NTFS file system.
Jpeg files (used by digital camera and website images) are an example of
'lossy' compression. The images compressed by jpeg can not be decompressed
to restore the original. Jpeg is a 'one way' process; acceptable for
images, but not for documents and especially not for other kinds of data and
for programs. WMA and MP3 files are another example of lossy compression;
once the compression is done the full range of original audio is lost and
cannot be restored.
Compression of files to save hard drive storage space is sort of a left-over
from the days of sub-Gigabyte hard drives.
Phil Weldon
| what exactly does that mean when the files or folders are compressed
| what exactly does that mean when the files or folders are compressed
_____
It means the files or folders are encoded so that less storage is needed.
Word processing files are reduced in size by quite a lot, program files by
much less.
The 'compression' is 'lossless'; decompressing a compressed file gives the
complete original, identical in every way. Examples of this 'lossless'
compression/decompression are .zip files and the compression/decompression
built into the Windows NTFS file system.
Jpeg files (used by digital camera and website images) are an example of
'lossy' compression. The images compressed by jpeg can not be decompressed
to restore the original. Jpeg is a 'one way' process; acceptable for
images, but not for documents and especially not for other kinds of data and
for programs. WMA and MP3 files are another example of lossy compression;
once the compression is done the full range of original audio is lost and
cannot be restored.
Compression of files to save hard drive storage space is sort of a left-over
from the days of sub-Gigabyte hard drives.
Phil Weldon
| what exactly does that mean when the files or folders are compressed