Ntsf.sys file

[glover]

If I repair the Ntsf.sys file, from the Recovery Console
on the XP Setup CD-ROM, do I run the risk of losing
existing data or files saved to my hard drive?

 

[Rich Barry]

No, even doing a Repair Install will not lose your existing data. Check
here
http://www.michaelstevenstech.com/XPrepairinstallfrm.htm