Re: New hard drive not recognized correctly

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On Sun, 19 Jun 2005 07:07:52 +0800, Ozvideo wrote:

> I was aware that Windows used to have limitations on the size of Hard Disk
> Drives for file sizes etc. but I had thought that these had now been fixed
> with XP & XP PRO. The reason that I ask is because I installed a new 250GB
> into a friends machine about a month ago & this went without incident.
> Yesterday I just put into an external caddie a USB2 drive of 300GB into my
> machine. XP Pro recognizes the drive & it will work but my computer
> displays the size as only 127GB which is less than half 's true size.
>
> Are there any other known size limitations & if so how does get around them?

You need at least XP SP1 and support in BIOS to use drives larger than 137
GB.

Drive manufacturers define total space in powers of 10. Windows uses powers
of 2 so the drive always shows up a bit smaller. It sounds like you machine
is limited to 137GB.

How to enable 48-bit Logical Block Addressing support for ATAPI disk drives
in Windows XP
http://support.microsoft.com/default.aspx?scid=kb;en-us;303013
--
Sharon F
MS-MVP ~ Windows Shell/User
.



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