VGN-A190 Hard Drive Upgrade

Well their pages say the same, that it is not supported, so I have to wonder why, maybe it's in such a tricky location or sealed in it can't be accessed ?
And why are you looking to swap it ? a 20 gig increase in size hardly seems worth the trouble or expense, ultimately they are the people who should know about their products and what can\can't be done, so if they say it's not supported then they must have a good reason as to why I would hope, if you simply need more space why not consider an external drive ? it would be the safest option given their comments and double or better your drive space, just a thought.

I am swapping the drives for the rpm purposes. I currently have a 4200 and I want to upgrade to a 7200.

In the mean time, why not get some extra space?

Well on that basis it makes sense yes why not indeed, but I am concerned as to why they say it is not supported, logically they must have one, normally they'd be quick to take your money to upgrade, but I don't know laptops that well so there may be factors I'm not aware of, but while awaiting more input if your confident in having a look inside see if there are any obvious reasons they would say they do not support it, if you can see it take note of what it looks like, what it's connections are, then look at the pic's shown for the other drives to see if theres obvious differences.

Do you happen to know exactly what drive is currently installed ?
They didn't mention much except it was an 80gig drive when I looked, maybe get Everest and see what that says it is, it may help us to compare the original with your proposed replacements, not much help but a start I hope.

The current drive is an IDE Hitachi 80GB/4200 RPM.

Sorry if I wasn't clear enough, but a specific model number is what I was looking for, it may help compare it to the others.

Hitachi_DK23FA-80 44W500