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  1. #1
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    Hard drive size limitation (Windows XP - SP1a)

    I recently bought a second hard drive (180GB - Western Digital) and installed Windows XP Pro, creating a dual boot PC (XP-NTFS / Me-Fat32). However, Windows XP cannot recognise more than 127GB, even though my BIOS can (I have installed the latest BIOS for my motherboard, which supports 48-bit LBA).

    I have installed "Windows XP Service Pack 1a" and I have tweaked the registry following the instructions that Microsoft has posted in Knowledge Base Article - 303013. Nevertheless, XP still recognises only 127 GB.

    (After installing SP1a, Windows XP load much slower and my activation period increased from 28 days to 30. Would that suggest that there was a problem in the installation of SP1a? Would removing and reinstalling SR1a solve my problem?)

    How could I make Windows XP recognise the full drive size without buying a controller card? If I buy such a card in several months time, would XP immediately recognise the 180GB or would I have to format my hard drive first?

    My 180GB hard drive is set as slave to a master 40GB one. If I would like to switch them should I just change their jumper settings and set the BIOS to boot from the former?

  2. #2
    Uranium Lounger viking33's Avatar
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    Re: Hard drive size limitation (Windows XP - SP1a)

    See post <post#=211571>post 211571</post#> regarding limitations.

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  3. #3
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    Re: Hard drive size limitation (Windows XP - SP1a)

    <font face="Georgia"><big>My 180GB hard drive is set as slave to a master 40GB one</big> </font face=georgia>


    One thing I will say is that it would probably be better to have both Hard Drives on different IDE channels and set as Master.

  4. #4
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    Re: Hard drive size limitation (Windows XP - SP1a)

    I have finally managed to make Windows recognise the full 180 GB of my
    new hard drive.

    I went to Control Panel --> Performance and Maintenance -->
    Administrative Tools --> Computer Management --> Storage --> Disk
    Management

    There I saw that my "Disk 0" was 40 GB large and my "Disk 1" had 128
    GB plus another 52 UNALLOCATED GB. I right clicked and selected Help,
    where I found the following information:

    1. I opened command prompt and typed "diskpart" (without the quotes).
    2. At the DISKPART prompt, I typed:
    list volume
    3. The following information appeared:
    Volume 0 D
    Volume 1 E
    Volume 2 C
    Volume 3 F
    (where F was the "problematic" hard drive)
    4. I therefore typed:
    select volume 3
    (obviously "3" should be replaced by the number of the volume that
    "is missing" GBs in your case)
    5. I then typed:
    extend
    (This command extends this drive to the whole available space. I
    could have typed "extend 10000" to extend this partition to an extra
    10 GB. You can refer to the Windows Help file for more details).

    Although I am not 100% sure, I believe that for the above to apply you
    should have installed SP1, but it's not necessary to have changed the
    Registry settings as I wrote in my first post.

  5. #5
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    Re: Hard drive size limitation (Windows XP - SP1a)

    When you set up the hd to begin with, are you sure you partitioned and allocated the whole drive? I think that the BIOS would recognize the size of the drive whether or not it was formatted/partitioned/allocated. Maybe when you first set it up you missed some...

    kip

  6. #6
    New Lounger
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    Re: Hard drive size limitation (Windows XP - SP1a)

    I don't think I missed something during the installation process. While in the blue screens of the installation process, Windows showed that the available space was only 131,000 MB. I have since read that Windows can recognise more than 137 GB (I don't know why I only had 127 GB) only if you install Service Pack 1. I guess therefore that the installation created a single partition of 127GB and when I installed SP1a, Windows could "see" the extra GBs; it considered them however as unallocated space.
    You are right however that the BIOS could recognise the full size of the hard drive from the very beginning. It was Windows that couldn't.
    Nevertheless, I am very disappointed with Western Digital, whose answer to my problem was that Windows XP cannot recognise more than 127 GB. A company who earns more revenues the larger hard drives it sells, should know how this problem is solved and advertise there is no real issue; not advise its customers that the extra space they bought is useless and inaccessible.

  7. #7
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    Re: Hard drive size limitation (Windows XP - SP1a)

    From the manual "Tech Support 101" <img src=/S/brickwall.gif border=0 alt=brickwall width=25 height=15> ........... Any problem that you have no solution for is ALWAYS someone else's fault. <img src=/S/hmmn.gif border=0 alt=hmmn width=15 height=15>
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    Re: Hard drive size limitation (Windows XP - SP1a)

    Even though I've got lots of space left on my 60g (heck I had lots of space on a 10g before I upgraded), those 200g deals at Best Buy get better all the time. For reference, is there a new SP1 limit (we know larger than 137, do we know how much larger?) Doubt that I'll bump my head on the gigabyte ceiling, but ya never know

    kip,
    sigless

  9. #9
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    Re: Hard drive size limitation (Windows XP - SP1a)

    Hey Kip,
    No need to duck for that low ceiling any time soon. This is from an article in PC Magazine

    [b]"At some point in the future, PC users may require an OS patch or update to overcome other possible drive size limits. Although 48-bit addressing will allow incredibly large hard drives, all current Windows platforms
    <IMG SRC=http://www.wopr.com/w3tuserpics/DocWatson_sig.gif>

  10. #10
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    Re: Hard drive size limitation (Windows XP - SP1a)

    The more that things change the more they stay the same. In the late eighties I had a PC at work and installed a 80MB drive. I think it was the BIOS and the drive systems that was in use limited it to 60 MB.

    Moral: There is never enough space

  11. #11
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    Re: Hard drive size limitation (Windows XP - SP1a)

    Moral: There is never enough space

    Except between our ears.
    We humans only use 10% of our hard drives. 90% Free Disk Space Available
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  12. #12
    Silver Lounger Bruce K's Avatar
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    Re: Hard drive size limitation (Windows XP - SP1a)

    Hi, mernik ~

    Would you happen to have any links to the source of this info, please?

  13. #13
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    Re: Hard drive size limitation (Windows XP - SP1a)

    Hey Bruce,
    It would appear from his post that he right-clicked on the troublesome unallocated GBs and chose Help from the dropdown and then chose Checklist: Adding A New Disk or Troubleshooting from the resulting Help window. ScreenShot attached.
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  14. #14
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    Re: Hard drive size limitation (Windows XP - SP1a)

    Hi, Doc ~

    OK, great......I found it...and alot more! <IMG SRC=http://www.krymow.com/images/thankyou.gif>

  15. #15
    Uranium Lounger
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    Re: Hard drive size limitation (Windows XP - SP1a)

    Always glad to help. <img src=/S/bow.gif border=0 alt=bow width=15 height=15>
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