• Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint
Share this Page URL
Help

Chapter 24. System Utilities > Protecting the System Files

Protecting the System Files

We are all familiar with the problem of an operating system becoming suspiciously unstable after the installation of a new application or a driver or after a system crash. Microsoft has been painfully aware of this problem for some time, and many a technician (whether a Microsoft employee or not) has been forced to instruct a PC user to “reinstall Windows” as the only solution. We all know how much fun that is. If you think Windows operating systems sometimes seem like a house of cards stacked level upon level, waiting for a single *.DLL or other system file to fail, well, you’re right. This kind of vulnerability is wholly unacceptable in mission-critical settings, so Microsoft had to come up with preventive measures.

Note

Windows XP also supports a new side-by-side DLL feature. This automatic feature keeps track of the DLL versions used by installed applications. If a system update or an application install attempts to change the version of a DLL that is needed by a service or application, XP automatically places a copy of these necessary DLLs in the \Windows\WinSxS folder. Each time an application is launched, XP checks its list to see what version of each required DLL is needed and loads those DLLs into that application’s virtual machine. No more “DLL hell.” This feature is completely automatic and invisible to the user.



PREVIEW

                                                                          

Not a subscriber?

Start A Free Trial


  
  • Creative Edge
  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint