- Most compressed file formats can make a file totally unusable if the compressed file becomes corrupt. Some formats such as some picture formats and some music formats are already compressed and compressing them further will do nothing or might even make them a bit larger because of the overhead.
- Windows File Compression is a part of the NTFS file system. When enabled, it automatically compresses files to take up less space on the disk. Seems simple enough, right? As a gross oversimplification, compression means replacing one representation of data with another that takes up less space.
In Windows 2000, as in Windows NT 4.0, there are rules that determine the compression state when you move and copy files and folders within and between volumes. There are also rules that determine the compression state when you move and copy files and folders between FAT and NTFS partitions. Compression is a feature of NTFS volumes only and cannot be performed on a FAT volume.
Compressed 'zip' files are widely used as they pack one or more computer files into a single file or folder which takes up less space. It can be a very useful way of sending or storing files. File compression reduces the amount of space needed to store data. Using compressed files can free up valuable space on a hard drive, or a web server. Some files, like word files, can be compressed to 90 percent of their original size. Other files, like JPEG or MP3 files, cannot be compressed further since these types of files are already. To delete the compressed version, right-click the zipped folder Choose Delete. Zip (Compress) Multiple Files 'Zipped' or 'Compressed' files are often sent as email attachments. Pokemon sacred gold documentation. The compression process helps to reduce file size. View the help page on how to Zip (Compress) Multiple Files if you would like instructions on creating a zipped file.
Copying compressed files and folders can cause performance degradation, because Windows 2000 uncompresses the file, copies it to the new location, and then compresses the file again.
Copying a File within an NTFS Volume
When a file is copied from one folder to another folder within an NTFS volume, the compression setting for the file changes to that of the target folder. Copying a file is like creating a new file in the target folder, so it will take on the attributes of the target folder. For example, if you copy an uncompressed file into a compressed folder, the file will be automatically compressed (see Figure 8.7).
Figure 8.7 When data is copied within an NTFS volume, the data inherits the compression attributes of the target folder.
Figure 8.7 When data is copied within an NTFS volume, the data inherits the compression attributes of the target folder.
Moving a File or Folder within an NTFS Volume Unreal tournament 1 torrent.
When a file or folder is moved from one folder to another within an NTFS volume, the compression setting is retained. For example, if you move an uncompressed file into a compressed folder on the same volume, the file will remain uncompressed (see Figure 8.8).
Figure 8.8 When data is moved within an NTFS volume, the data retains its compression attributes regardless of the compression status of the target folder.
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Copying or Moving a File or Folder between NTFS Volumes
When a file or folder is copied or moved from one folder to another on different NTFS volumes, the compression setting for the file changes to that of the target folder. Once again, this happens because when you copy or move a file from one volume to another, it has to create the file at the target and then delete it from the source, so it takes on the attributes of the folder in which it is created (see Figure 8.9 and Figure 8.10).
Figure 8.9 When data is copied between NTFS volumes, the data inherits the compression attributes of the target folder.
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Figure 8.10 When data is moved between NTFS volumes, the data inherits the compression attributes of the target folder.
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Moving or Copying a File or Folder from an NTFS Volume to a FAT Volume or to a Floppy Disk
When a file or folder is moved or copied to a FAT volume, it is automatically uncompressed, because FAT does not support Windows 2000 file compression (see Figure 8.11). Floppy disks also do not support compression, as the information needed to support the NTFS file system cannot fit on a floppy, so floppies end up being FAT (see Figure 8.12).
Figure 8.11 When data is moved or copied from an NTFS volume to a FAT volume, the data is automatically uncompressed.
Figure 8.11 When data is moved or copied from an NTFS volume to a FAT volume, the data is automatically uncompressed.
Figure 8.12 When data is moved or copied from an NTFS
volume to a floppy disk, the data is automatically uncompressed.
Figure 8.12 When data is moved or copied from an NTFS
volume to a floppy disk, the data is automatically uncompressed.
You cannot choose the color for compressed files to be viewed by default, but you can do so with a Microsoft utility called TweakUI (see Figure 8.13). TweakUI is a Windows NT Powertoy that provides access to many hidden registry keys in Windows 95/98/NT/2000. One feature of this utility allows you to set the compressed data color to a different color. Powertoys were developed by Windows developers in their spare time. They are not officially supported by Microsoft, although they work very well. You can find TweakUI by browsing http://www.microsoft.com/windows and looking for Windows NT or 2000 power toys.
Figure 8.13 The Explorer tab of the TweakUl utility includes the option to change the color of compressed files at the bottom of the dialog box.
Figure 8.13 The Explorer tab of the TweakUl utility includes the option to change the color of compressed files at the bottom of the dialog box.
How Does Zip Work
Continue reading here: Managing Disk Quotas
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Compressed (e.g., archived or zipped) files may contain manyseparate files in one large archive, which often takes up less spacethan the original files. Before you can read or run all the separatefiles and programs, you must use an archiving program to extract thefiles from the archive. In Windows, you can compress (zip) anddecompress (unzip) files without installing any third-partyprograms.
Compressing a file or folder
- From the Start menu, open Computer (Windows 7and Vista) or My Computer (Windows XP).
- Select the files or folders you want to compress. To selectmultiple files or folders at once, hold down the
Ctrlkeywhile you click each item. - Right-click the selected items, choose Send to, and thenclick Compressed (zipped) folder. This will create a zippedfile in the same directory that the files are located. The fileextension will be
.zip.Note: The new
.zipfile will have thesame name as the file or folder you compressed. If you compressmultiple items, the file name will be the same as the file youright-clicked to start the compression.
Decompressing a zipped file or folder
What Is A Compressed Folder
- From the Start menu, open Computer (Windows 7and Vista) or My Computer (Windows XP).
- Find the file you want to decompress, right-click it, and chooseExtract All.
- In the dialog box that appears, to choose the destination for thedecompressed files, click Browse.. You can also checkthe option Show extracted files when complete.
- Click Extract.
Note: When you zip or unzip files, the originalfiles are not deleted. If you want to delete the original files, youwill have to do so manually.
Other options for file compression and decompression
Pdf studio 11 0 4 download free. For zipping and unzipping most files, the built-in Windows utilitywill suffice; however, if you encounter a compressed format notsupported by the built-in Windows tools, you can try one of thefollowing programs:
What Is Compressing A File
Note: These third-party tools are not available onIUware and may require purchase, although most offer free trials.
