We have the value name and we have the value data and

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has two attributes associated with it. We have the value name and we have the value data, and notice that I'm allowed to edit the value data that's associated with this value name for this Registry key.Now here's where you have to be very, very careful because if I were to make a change here and it'sthe wrong change, then the application or the hardware that relies on this setting is not going to work properly. In fact, depending upon what it is you change, you could cause the whole system to not boot. As you can see here, this Registry key has a name of GMFilePath and the data points to the location of the GM.DOS file. In essence, we're telling DirectMusic where a particular file that it needs to function resides in the file system. Now this is an instance of a String Registry key. It accepts string text as input, in fact you can tell that by looking up here, it says EditString. Now be aware that some Registry keys will require a different type of data. They might require a binary value, a zero or one. Some Registry keys will require hexadecimal number. Just be aware of what type of value the Registry key isexpecting and make sure you put it in there appropriately. If the Registry key is expecting a hexadecimal number, make sure you use a hexadecimal number. If it's expecting a binary number, be sure you use a binary number. If it's expecting a string of text, make sure you put in a string of text. Now I'm gonna go ahead and hit Cancel at this point just to make sure that I'm not making a change that I should not be making. Back up Your System 5:50-7:59 Now there's one key thing that I always teach new Windows system administrators whenever they start manually working with the Registry, and that is the fact that before you manually make a change to the Registry with RegEdit, you need to back everything up first. That way if you really mess things up, you can still get the system back up and running. There's actually two different options for doing this. The best option is to set a Restore Point. Come down here to our Windows button, right-click, go to System, and then go to System Protection, and right here click on Create to create a Restore Point.Then go make whatever change it is you want to the Registry. That way, if for some reason the change you make to the Registry really messes things up, you can boot into the Recovery environment from your installation CD and jump to a prior Restore Point and that will bring the system back up to gear. The second option, which isn't as good a one, is to make a backup of the Registry itself. Now this is a useful option but it may not help a whole lot if for some reason that the change youmake to the Registry causes the whole system not to boot, because you can't restore the Registry if you can't get the system booted up because you have to have the system booted up to restore the Registry. That's why the Restore Point is the preferred option for recovering from an errant manualRegistry change.
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