How to ensure that LBA48 is enabled?

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Hi All,

As someone who was once "biten" by the "Rollover bug," how do I ensure that
LBA-48 is enabled, ensuring that there will be no problem with drives
greater than 137GB.

I once lost 137GB of VirtualPC disk images because of this "issue."

I did a fresh install of WinXP SP2, from a pre-patched CD. But is there a
certain registry key I should check to be sure that it's enabled? I don't
want to lose another 137GB of disk images.

Thanks,

Mark
 
G

Guest

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Archived from groups: microsoft.public.windowsxp.hardware (More info?)

Windows XP SP1 and above automatically support large (>137GB) hard disks, so
there is no cause for concern. You can check this key.

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Atapi\Parameters\

The EnableBigLba registry value should be 1

This article will help you:

http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3B303013

----
Abhilash Tibrewal

"Mark Levy" <Mark@NoEmailPlease.com> wrote in message
news:OaDArwINFHA.2132@TK2MSFTNGP14.phx.gbl...
> Hi All,
>
> As someone who was once "biten" by the "Rollover bug," how do I ensure
> that
> LBA-48 is enabled, ensuring that there will be no problem with drives
> greater than 137GB.
>
> I once lost 137GB of VirtualPC disk images because of this "issue."
>
> I did a fresh install of WinXP SP2, from a pre-patched CD. But is there a
> certain registry key I should check to be sure that it's enabled? I don't
> want to lose another 137GB of disk images.
>
> Thanks,
>
> Mark
>
>
 

anna

Distinguished
Apr 17, 2004
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Archived from groups: microsoft.public.windowsxp.hardware (More info?)

>
> "Mark Levy" <Mark@NoEmailPlease.com> wrote in message
> news:OaDArwINFHA.2132@TK2MSFTNGP14.phx.gbl...
>> Hi All,
>>
>> As someone who was once "biten" by the "Rollover bug," how do I ensure
>> that
>> LBA-48 is enabled, ensuring that there will be no problem with drives
>> greater than 137GB.
>>
>> I once lost 137GB of VirtualPC disk images because of this "issue."
>>
>> I did a fresh install of WinXP SP2, from a pre-patched CD. But is there
>> a
>> certain registry key I should check to be sure that it's enabled? I
>> don't
>> want to lose another 137GB of disk images.
>>
>> Thanks,
>>
>> Mark

"Abhilash Tibrewal" <abhionnetATnospamsify.com> wrote in message
news:uMvHtiJNFHA.3512@TK2MSFTNGP15.phx.gbl...
>
> Windows XP SP1 and above automatically support large (>137GB) hard disks,
> so there is no cause for concern. You can check this key.
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Atapi\Parameters\
> The EnableBigLba registry value should be 1
> This article will help you:
> http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3B303013
> ----
> Abhilash Tibrewal


Mark:
Assuming your motherboard's BIOS supports large-drive capability, i.e.,
drives > 137 GB, and your XP OS includes SP2 (or SP1), your system will
recognize the full capacity of those large capacity drives.

There's really no registry key to check. The registry key that Abhilash
mentions is *not* present in XP SP2 (or SP1) versions. It was present in the
original release of XP so that a user could modify its value to achieve
large-capacity hard drive capability for testing, and *only* testing
purposes. It's of no relevance now.

Bottom line - rest assured that the full capacity your large-capacity disk
will be recognized as long as you have BIOS capability and your XP
installation contains SP1 and/or SP2.
Anna
 

Andy

Distinguished
Mar 31, 2004
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Archived from groups: microsoft.public.windowsxp.hardware (More info?)

Run Disk Management. Look at the panel that shows the graphic
representation of the partitions on the disk. The left side of the
panel shows the size of each disk. If the size is correct, the
operating system is correctly accessing the drive.

On Tue, 29 Mar 2005 12:10:41 -0600, "Mark Levy"
<Mark@NoEmailPlease.com> wrote:

>Hi All,
>
>As someone who was once "biten" by the "Rollover bug," how do I ensure that
>LBA-48 is enabled, ensuring that there will be no problem with drives
>greater than 137GB.
>
>I once lost 137GB of VirtualPC disk images because of this "issue."
>
>I did a fresh install of WinXP SP2, from a pre-patched CD. But is there a
>certain registry key I should check to be sure that it's enabled? I don't
>want to lose another 137GB of disk images.
>
>Thanks,
>
>Mark
>
 
G

Guest

Guest
Archived from groups: microsoft.public.windowsxp.hardware (More info?)

"Anna" <myname@myisp.net> wrote in message
news:%23Rt$1tJNFHA.164@TK2MSFTNGP12.phx.gbl...
>
>>
>> "Mark Levy" <Mark@NoEmailPlease.com> wrote in message
>> news:OaDArwINFHA.2132@TK2MSFTNGP14.phx.gbl...
>>> Hi All,
>>>
>>> As someone who was once "biten" by the "Rollover bug," how do I ensure
>>> that
>>> LBA-48 is enabled, ensuring that there will be no problem with drives
>>> greater than 137GB.
>>>
>>> I once lost 137GB of VirtualPC disk images because of this "issue."
>>>
>>> I did a fresh install of WinXP SP2, from a pre-patched CD. But is there
>>> a
>>> certain registry key I should check to be sure that it's enabled? I
>>> don't
>>> want to lose another 137GB of disk images.
>>>
>>> Thanks,
>>>
>>> Mark
>
> "Abhilash Tibrewal" <abhionnetATnospamsify.com> wrote in message
> news:uMvHtiJNFHA.3512@TK2MSFTNGP15.phx.gbl...
>>
>> Windows XP SP1 and above automatically support large (>137GB) hard disks,
>> so there is no cause for concern. You can check this key.
> HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Atapi\Parameters\
>> The EnableBigLba registry value should be 1
>> This article will help you:
>> http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3B303013
>> ----
>> Abhilash Tibrewal
>
>
> Mark:
> Assuming your motherboard's BIOS supports large-drive capability, i.e.,
> drives > 137 GB, and your XP OS includes SP2 (or SP1), your system will
> recognize the full capacity of those large capacity drives.
>
> There's really no registry key to check. The registry key that Abhilash
> mentions is *not* present in XP SP2 (or SP1) versions. It was present in
> the original release of XP so that a user could modify its value to
> achieve large-capacity hard drive capability for testing, and *only*
> testing purposes. It's of no relevance now.
>
> Bottom line - rest assured that the full capacity your large-capacity disk
> will be recognized as long as you have BIOS capability and your XP
> installation contains SP1 and/or SP2.
> Anna
>

Thanks for correcting my "theoritical" information Anna, there is no such
key in Sp1/2 :)

----
Abhilash Tibrewal