Files that use the 8.3 naming convention can degrade NTFS drive performance. Unless you have a good reason for keeping the 8.3 naming convention intact (such as if you’re using 16-bit programs), a performance gain can be achieved by disabling it.
Set the Registry DWORD key HKEY_LOCAL_MACHINE\ SYSTEM\ CurrentControlSet\Control\ FileSystem\NtfsDisable8dot3NameCreation to 1. Exit the Registry and reboot.
"Windows XP Tips: Disable 8.3 Name Creation in NTFS"
Reference : techpraveen.com