Microsoft KB Archive/928353

= The available space on a disc that you format by using the Windows Vista Live File System is less than the capacity of the disc =

Article ID: 928353

Article Last Modified on 3/15/2007

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APPLIES TO


 * Windows Vista Ultimate
 * Windows Vista Enterprise
 * Windows Vista Business
 * Windows Vista Home Premium
 * Windows Vista Home Basic
 * Windows Vista Starter
 * Windows Vista Enterprise 64-bit edition
 * Windows Vista Home Basic 64-bit edition
 * Windows Vista Home Premium 64-bit edition
 * Windows Vista Ultimate 64-bit edition
 * Windows Vista Business 64-bit edition

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SYMPTOMS
After you format a disc by using the Windows Vista Live File System, the available space on the disc is less than the capacity of the disc. For example, after you format a 700 megabyte (MB)-disc, less than 700 MB is available for use on the disc.



CAUSE
This issue occurs because the Windows Vista Live File System reserves a small amount of disc space to accommodate link-loss area. Live File System uses Restricted Overwrite mode. In this mode, the media requires a special low-level format. This format reserves a small amount of disc space for link-loss area. The Universal Disk Format (UDF) file system reserves at least 10 percent of the reported capacity of the disc for sparing. Also, if the disc was originally formatted by a third-party program, additional space may be reserved by the third-party program.



MORE INFORMATION
For more information about the Live File System disc format, visit the following Microsoft Web page:

http://windowshelp.microsoft.com/Windows/en-US/Help/2af64e60-60aa-4d79-ab6c-3a5db5806cbe1033.mspx

Keywords: kbtshoot kbprb kbexpertisebeginner KB928353

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