There are a couple of conflicting truisms of computing: Always apply the latest updates and security fixes; and if it aint broke, dont fix it. The difference is clear when you consider the overhaul of your operating system that will come with Windows 2000 Service Pack 4.Of course, we all have to take some risks now and then.
Why wouldnt you apply a bug fix, a security update or a Service Pack? Microsoft supplies for each a usually long list of fixed problems, so assuming that any reported problem concerns you in the least bit, you have a strong interest in applying the approved fix.
At the same time, you may be concerned that the fix will cause its own problems, something that can happen with updates of any kind, from the OS to any and all software programs. With this possibility in mind, you will need a way to back your way out of the update in case something goes wrong.
What does this mean? In brief, always back your system up before applying a major system change.
Happily, making a good backup isnt all that hard anymore, and doing a complete job isnt that much harder. All you need is disk space, and thats about as expensive as MCI stock these days.
As we all know, backing up our data is important, and of course, we should do it regularly. However, thats not what Im dealing with here. In this case, the backup is all about reserving your system configuration and operating system files, and making sure the system will run in the event of a retreat.
Here are some tips to prepare yourself for the SP4 installation and protect your configuration in case of a bad result:
The Quickie Approach
The first, most obvious way to be on guard is to note that all recent Microsoft Windows patches come with uninstall procedures. During installation, you must approve that the Service Pack installer archive the files that it will replace, and this action can take up a fair chunk of disk space. But in most cases, if something goes wrong, you can just go to the Control Panels Add/Remove Programs list to uninstall the Service Pack or update.
Another quick way to protect yourself, if youre running Windows ME or Windows XP, is to create a system restore point with the System Restore function. This feature saves and restores the operating systems configuration and files. This process also can require a substantial amount of space.
In fact, many operations in addition to the Service Pack installations, will create restore points automatically. But just as we sometimes press an elevator button twice, its comforting to create your own set to be sure. In Windows XP this can be found in Start->All Programs->Accessories->System Tools->System Restore.
Alternatively, if you have Windows 2000 or something later, you can select the "Last Known Good Configuration" option at the Boot menu. I dont think this feature performs as complete a restoration, still it may get you past a boot problem.
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