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BIOS Feature "Magic Dates"
There are several important BIOS features or capabilities that have been introduced over the last few years. The only reliable way to ensure that your BIOS supports these is to check your BIOS or motherboard manual, or contact the manufacturer or dealer. However, there are some rules of thumb relating the BIOS date that you can use to give you an idea of whether or not a given machine is likely to support a given feature.
Here are the most common BIOS features and the approximate date that they were introduced. Obviously these are just rules of thumb; don't take all of this as definitive. It is fairly safe to say that if the BIOS date is more than a year earlier than a magic date, the feature almost certainly is not supported, and if it is more than a year after the date, it almost certainly is supported:
See the section on hard disk BIOS barriers for more information on BIOS hard disk size limitations.