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  1. #1
    New Lounger
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    Maximum HDD allowed (XP Home)

    I want to add an EIDE HDD (Maximum Allowed) by putting it in a EIDE to USB2 Converter. I dont have room inside the box.
    1)What is the maximum size HDD drive I can use.
    2)The WDD 200GB drive provides a EIDE-PCI card for its use.
    3)I heard that drives greater than 137GB are not supported?
    4) What determines the max size since the USB2 is the interface. Does the computer recognize that the Drive is EIDE and has some limitation or is the converter unit the determining factor on what size can be handled.

    I am sure others would be interested in the answer.

    Thanks, Bob

  2. #2
    Uranium Lounger
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    Re: Maximum HDD allowed (XP Home)

    I'll answer in sequence. <img src=/S/smile.gif border=0 alt=smile width=15 height=15>

    <hr>1) What is the maximum size HDD drive I can use.<hr>
    I'd say no larger than 130GB, you'd be hard pressed to find something larger than that anyway. Unless you step into a dynamic disk configuration or a RAID array (IDE RAID is now becoming common on some motherboards), the design of IDE drives is going to keep any sane manufacturer from creating a product that has space that can't be used (and therefore is wasted, non-profitable space).

    <hr>2) The WDD 200GB drive provides a EIDE-PCI card for its use.<hr>
    I'd use this instead of a USB port, personally, unless portability is absolutely a requirement. By introducing an interface conversion into the chain, you're introducing another piece that can break or act stupid down the road.

    <hr>3) I heard that drives greater than 137GB are not supported?<hr>
    You heard correctly; the EIDE interface will not support drives above that size. A new technology, Serial ATA, is destined to supplant EIDE and overcome that limitation. Keep in mind that EIDE has been aroudn for roughly ten years - an eternity in computer terms.

    <hr>4) What determines the max size since the USB2 is the interface. Does the computer recognize that the Drive is EIDE and has some limitation or is the converter unit the determining factor on what size can be handled.<hr>
    The EIDE design is going to limit your drive's size. Even if you convert the interface to USB 2.0, the EIDE limitations on size are still very much in effect and as stated in response to item 1 - you're almost certain to have bum luck finding a larger drive than that.

    HTH,
    -Mark

  3. #3
    Star Lounger
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    Re: Maximum HDD allowed (XP Home)

    I am using a Western Digital 180 gig drive on Win XP pro. I am using the pci card that came with the drive for connection. I did flash my motherboard with latest bios and the onboard IDE controler now supports large drive too. There is a dl for windows that make xp support 48 bit LBA for very large drives. I believe it is part of SP1. I do not know if you can use it on USB bus. If your box is crowded you might consider removing an internal smaller drive and using the large one inside with pci card and the other on the usb bus.

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