converting an ext hdd to an internal one?

i have heard that some ext. disks are the same 2.5" notebook HDD; I have a seagate free agent go 320GB and I want to make it "internal". is that possible?
my notebook supports 2 HDDs and I want to use the 2nd HDD as a movie database so the "5400 RPM" is enough for me

 

I'm pretty sure the Free Agent Gos have 12.5 mm thick drives. So if your laptop supports 12.5 mm thick drives, you're fine... just keep in mind that most laptops support 9.5 mm.

 

I have done this, it is possible.

 

you mean you are sure that "free agent gos" have the standard sata port?
edit:
it seems that only the first bay supports 12+mm HDDs, so I have to swap the org. hdd
which ext. HDDs are 9mm? WD? maxtor?

 

Yes, the drives in Free Agent Gos have a standard SATA port. That I'm sure of.
No one brand is going to make only one thickness of drive. Some drives by any given company will be 12.5mm drives, some will be 9.5mm drives. You just check the model info to find out.

Check to make sure the drive currently in your laptop isn't already 12.5mm
If your first bay supports 12.5mm and you have a 12.5mm, adding another will be a problem

 

also keep in mind that some enclosures cannot be open, this is, there's no screws or any way to remove the hard drive inside unless you broken the enclosure. which is kind of hard and dangerous.

 

My WD my book's adapter just died... is there any way to remove the drive and use it externally? The drive has e-sata and usb ports and my comp also had both.

 

This is not even true. There might not be any screws (WD Passport for example) but they can still be opened if you're careful.

Sadly every My Book I have ever seen uses a proprietary HDD controller, so if you remove the drive from the carrier and hook it up to a computer, you will have to format it before use, causing you to lose all of your data. If you don't care about the data, that's cool, you can drop it into another external enclosure, format, and you're done.
If you need the data, you're going to be looking for the same model somewhere, pulling the drive out of the working one, putting your drive in that, then pulling your data off.

 

lol need the data i know that my best bet is to buy a new adapter and i even found an adapter on Amazon UK , but problem is its a little expensive as its 18 pounds.. the whole drive had costed 85 pounds... Is there any other reliable online place like amazon from where i can get the adapter? Preferably it should be cheaper too. If this would help.. the adapter has an output of 12V and 1500mA.

 

Oh, the power adapter? I thought you meant the enclosure died.
That's a totally different story.

Look for a 12v wall wart with an amperage of 1500mA (1.5A) or greater, OR you can take a desktop power supply and wire into the 12V line of a molex connector. A standard molex will be yellow black black red, which is 12v gnd gnd 5v respectively. Just figure out the polarity of the old adapter (there should be a diagram telling you if center or outer is positive) then wire in the old connector to the PSU.

But a wall wart would be easier XD

 

don't exactly get what your'e saying.. Could you give an example of a product like the one your'e talking about? Also a link from which i can buy the product would be great.. i'm not very great at understanding technical stuff

 

All kinds of stuff use wall warts. Most homes have a drawer or box of these things somewhere, where you put all of the ones you find behind a shelf or something but don't want to throw away
I've got a box of like 30 of them in my basement. Find one that says 12v, then look at the amperage. If you're at 1500mA or 1.5A OR GREATER (not less) then it will work.
If you don't own a multimeter or at least a simple voltage tester though I would suggest just buying one made for your drive.