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Convert GPD Disk

 
 
Lisa
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Posts: n/a
 
      26th Mar 2008
I have a USB external HD case:
http://www.newegg.com/Product/Produc...82E16817332008

I put 3 drives in. Using normal mode. Not spanning. 2 of the drives
are GPD or GUID or something that Vista made. How can I convert these
drives to regular drives that XP can see? I need to access these from
Vista and XP. I can't find any way to convert. Paragon can't do it.
Neither can Partition Magic. I have Googled and can't really find a
way. Can anyone help?

Thx!

 
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Arno Wagner
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      26th Mar 2008
Previously Lisa <(E-Mail Removed)> wrote:
> I have a USB external HD case:
> http://www.newegg.com/Product/Produc...82E16817332008


> I put 3 drives in. Using normal mode. Not spanning. 2 of the drives
> are GPD or GUID or something that Vista made. How can I convert these
> drives to regular drives that XP can see? I need to access these from
> Vista and XP. I can't find any way to convert. Paragon can't do it.
> Neither can Partition Magic. I have Googled and can't really find a
> way. Can anyone help?


Repartition and reformat under XP?

Arno

 
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Lisa
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      26th Mar 2008
On 26 Mar 2008 04:18:32 GMT, Arno Wagner <(E-Mail Removed)> wrote:

>Previously Lisa <(E-Mail Removed)> wrote:
>> I have a USB external HD case:
>> http://www.newegg.com/Product/Produc...82E16817332008

>
>> I put 3 drives in. Using normal mode. Not spanning. 2 of the drives
>> are GPD or GUID or something that Vista made. How can I convert these
>> drives to regular drives that XP can see? I need to access these from
>> Vista and XP. I can't find any way to convert. Paragon can't do it.
>> Neither can Partition Magic. I have Googled and can't really find a
>> way. Can anyone help?

>
>Repartition and reformat under XP?
>
>Arno


I can't. In disk mgt I can see the partitions in xp. Xp even
identifys them as GPT Protective Partitions. Theres no drive letter
in xp. All the options like format are grayed out.

 
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Arno Wagner
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Posts: n/a
 
      26th Mar 2008
Previously Lisa <(E-Mail Removed)> wrote:
> On 26 Mar 2008 04:18:32 GMT, Arno Wagner <(E-Mail Removed)> wrote:


>>Previously Lisa <(E-Mail Removed)> wrote:
>>> I have a USB external HD case:
>>> http://www.newegg.com/Product/Produc...82E16817332008

>>
>>> I put 3 drives in. Using normal mode. Not spanning. 2 of the drives
>>> are GPD or GUID or something that Vista made. How can I convert these
>>> drives to regular drives that XP can see? I need to access these from
>>> Vista and XP. I can't find any way to convert. Paragon can't do it.
>>> Neither can Partition Magic. I have Googled and can't really find a
>>> way. Can anyone help?

>>
>>Repartition and reformat under XP?
>>
>>Arno


> I can't. In disk mgt I can see the partitions in xp. Xp even
> identifys them as GPT Protective Partitions. Theres no drive letter
> in xp. All the options like format are grayed out.


Ok, that is a problem. Best approach is to use a disk wipe utility
to clear the disk, restart and then partition and format under XP.

Since I do such things under Linux, I don't know what tools
are best for XP, but google("wipe disk") should find several
and the archives of this newsgroup should also contain relevant
information.

Arno
 
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Franc Zabkar
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Posts: n/a
 
      26th Mar 2008
On Wed, 26 Mar 2008 01:21:55 -0400, Lisa <(E-Mail Removed)> put
finger to keyboard and composed:

>On 26 Mar 2008 04:18:32 GMT, Arno Wagner <(E-Mail Removed)> wrote:
>
>>Previously Lisa <(E-Mail Removed)> wrote:
>>> I have a USB external HD case:
>>> http://www.newegg.com/Product/Produc...82E16817332008

>>
>>> I put 3 drives in. Using normal mode. Not spanning. 2 of the drives
>>> are GPD or GUID or something that Vista made. How can I convert these
>>> drives to regular drives that XP can see? I need to access these from
>>> Vista and XP. I can't find any way to convert. Paragon can't do it.
>>> Neither can Partition Magic. I have Googled and can't really find a
>>> way. Can anyone help?

>>
>>Repartition and reformat under XP?
>>
>>Arno

>
>I can't. In disk mgt I can see the partitions in xp. Xp even
>identifys them as GPT Protective Partitions. Theres no drive letter
>in xp. All the options like format are grayed out.


It appears that the MBR and partition table that XP sees is a dummy.
For a GPT disc, the real partition table is at sector 2, not sector 0,
and partition 1 starts at sector 34, not 63. AFAICT, if you want your
hard disc file systems to be visible to both XP and Vista, then you
will need to backup your data and repartition and reformat using NTFS.

See http://en.wikipedia.org/wiki/GUID_Partition_Table

"The primary purpose of the MBR at the beginning of the disk is to
prevent MBR-based disk utilities from mis-recognizing, and possibly
over-writing, GPT disks. A single partition, encompassing the entire
GPT drive, is indicated. The System ID for the partition is set to
0xEE, indicating that it uses GPT. Because of this, EFI ignores the
MBR. Some 32-bit OSes which cannot read GPT disks nevertheless
recognize this ID and present the disk as an inaccessible GPT disk."

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
 
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Lisa
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Posts: n/a
 
      26th Mar 2008
On Thu, 27 Mar 2008 07:24:33 +1100, Franc Zabkar
<(E-Mail Removed)> wrote:

>On Wed, 26 Mar 2008 01:21:55 -0400, Lisa <(E-Mail Removed)> put
>finger to keyboard and composed:
>
>>On 26 Mar 2008 04:18:32 GMT, Arno Wagner <(E-Mail Removed)> wrote:
>>
>>>Previously Lisa <(E-Mail Removed)> wrote:
>>>> I have a USB external HD case:
>>>> http://www.newegg.com/Product/Produc...82E16817332008
>>>
>>>> I put 3 drives in. Using normal mode. Not spanning. 2 of the drives
>>>> are GPD or GUID or something that Vista made. How can I convert these
>>>> drives to regular drives that XP can see? I need to access these from
>>>> Vista and XP. I can't find any way to convert. Paragon can't do it.
>>>> Neither can Partition Magic. I have Googled and can't really find a
>>>> way. Can anyone help?
>>>
>>>Repartition and reformat under XP?
>>>
>>>Arno

>>
>>I can't. In disk mgt I can see the partitions in xp. Xp even
>>identifys them as GPT Protective Partitions. Theres no drive letter
>>in xp. All the options like format are grayed out.

>
>It appears that the MBR and partition table that XP sees is a dummy.
>For a GPT disc, the real partition table is at sector 2, not sector 0,
>and partition 1 starts at sector 34, not 63. AFAICT, if you want your
>hard disc file systems to be visible to both XP and Vista, then you
>will need to backup your data and repartition and reformat using NTFS.
>
>See http://en.wikipedia.org/wiki/GUID_Partition_Table
>
>"The primary purpose of the MBR at the beginning of the disk is to
>prevent MBR-based disk utilities from mis-recognizing, and possibly
>over-writing, GPT disks. A single partition, encompassing the entire
>GPT drive, is indicated. The System ID for the partition is set to
>0xEE, indicating that it uses GPT. Because of this, EFI ignores the
>MBR. Some 32-bit OSes which cannot read GPT disks nevertheless
>recognize this ID and present the disk as an inaccessible GPT disk."
>
>- Franc Zabkar


I have seen that. Drives are currently NTFS GPD. Tell me how I can
format to regular NTFS. Drives are empty. I think I may have to
disassemble and put drives in my pc and format from an IDE connection
using the Samsung floppy. I'd rather not do all that.

 
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Lisa
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Posts: n/a
 
      27th Mar 2008
On Wed, 26 Mar 2008 18:25:09 -0400, Lisa <(E-Mail Removed)> wrote:

>On Thu, 27 Mar 2008 07:24:33 +1100, Franc Zabkar
><(E-Mail Removed)> wrote:
>
>>On Wed, 26 Mar 2008 01:21:55 -0400, Lisa <(E-Mail Removed)> put
>>finger to keyboard and composed:
>>
>>>On 26 Mar 2008 04:18:32 GMT, Arno Wagner <(E-Mail Removed)> wrote:
>>>
>>>>Previously Lisa <(E-Mail Removed)> wrote:
>>>>> I have a USB external HD case:
>>>>> http://www.newegg.com/Product/Produc...82E16817332008
>>>>
>>>>> I put 3 drives in. Using normal mode. Not spanning. 2 of the drives
>>>>> are GPD or GUID or something that Vista made. How can I convert these
>>>>> drives to regular drives that XP can see? I need to access these from
>>>>> Vista and XP. I can't find any way to convert. Paragon can't do it.
>>>>> Neither can Partition Magic. I have Googled and can't really find a
>>>>> way. Can anyone help?
>>>>
>>>>Repartition and reformat under XP?
>>>>
>>>>Arno
>>>
>>>I can't. In disk mgt I can see the partitions in xp. Xp even
>>>identifys them as GPT Protective Partitions. Theres no drive letter
>>>in xp. All the options like format are grayed out.

>>
>>It appears that the MBR and partition table that XP sees is a dummy.
>>For a GPT disc, the real partition table is at sector 2, not sector 0,
>>and partition 1 starts at sector 34, not 63. AFAICT, if you want your
>>hard disc file systems to be visible to both XP and Vista, then you
>>will need to backup your data and repartition and reformat using NTFS.
>>
>>See http://en.wikipedia.org/wiki/GUID_Partition_Table
>>
>>"The primary purpose of the MBR at the beginning of the disk is to
>>prevent MBR-based disk utilities from mis-recognizing, and possibly
>>over-writing, GPT disks. A single partition, encompassing the entire
>>GPT drive, is indicated. The System ID for the partition is set to
>>0xEE, indicating that it uses GPT. Because of this, EFI ignores the
>>MBR. Some 32-bit OSes which cannot read GPT disks nevertheless
>>recognize this ID and present the disk as an inaccessible GPT disk."
>>
>>- Franc Zabkar

>
>I have seen that. Drives are currently NTFS GPD. Tell me how I can
>format to regular NTFS. Drives are empty. I think I may have to
>disassemble and put drives in my pc and format from an IDE connection
>using the Samsung floppy. I'd rather not do all that.



I did it! Someone in the Vista NG gave me this link
http://technet2.microsoft.com/window....mspx?mfr=true

Thx everyone!

 
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Arno Wagner
Guest
Posts: n/a
 
      27th Mar 2008
Previously Lisa <(E-Mail Removed)> wrote:
> On Wed, 26 Mar 2008 18:25:09 -0400, Lisa <(E-Mail Removed)> wrote:


>>On Thu, 27 Mar 2008 07:24:33 +1100, Franc Zabkar
>><(E-Mail Removed)> wrote:
>>
>>>On Wed, 26 Mar 2008 01:21:55 -0400, Lisa <(E-Mail Removed)> put
>>>finger to keyboard and composed:
>>>
>>>>On 26 Mar 2008 04:18:32 GMT, Arno Wagner <(E-Mail Removed)> wrote:
>>>>
>>>>>Previously Lisa <(E-Mail Removed)> wrote:
>>>>>> I have a USB external HD case:
>>>>>> http://www.newegg.com/Product/Produc...82E16817332008
>>>>>
>>>>>> I put 3 drives in. Using normal mode. Not spanning. 2 of the drives
>>>>>> are GPD or GUID or something that Vista made. How can I convert these
>>>>>> drives to regular drives that XP can see? I need to access these from
>>>>>> Vista and XP. I can't find any way to convert. Paragon can't do it.
>>>>>> Neither can Partition Magic. I have Googled and can't really find a
>>>>>> way. Can anyone help?
>>>>>
>>>>>Repartition and reformat under XP?
>>>>>
>>>>>Arno
>>>>
>>>>I can't. In disk mgt I can see the partitions in xp. Xp even
>>>>identifys them as GPT Protective Partitions. Theres no drive letter
>>>>in xp. All the options like format are grayed out.
>>>
>>>It appears that the MBR and partition table that XP sees is a dummy.
>>>For a GPT disc, the real partition table is at sector 2, not sector 0,
>>>and partition 1 starts at sector 34, not 63. AFAICT, if you want your
>>>hard disc file systems to be visible to both XP and Vista, then you
>>>will need to backup your data and repartition and reformat using NTFS.
>>>
>>>See http://en.wikipedia.org/wiki/GUID_Partition_Table
>>>
>>>"The primary purpose of the MBR at the beginning of the disk is to
>>>prevent MBR-based disk utilities from mis-recognizing, and possibly
>>>over-writing, GPT disks. A single partition, encompassing the entire
>>>GPT drive, is indicated. The System ID for the partition is set to
>>>0xEE, indicating that it uses GPT. Because of this, EFI ignores the
>>>MBR. Some 32-bit OSes which cannot read GPT disks nevertheless
>>>recognize this ID and present the disk as an inaccessible GPT disk."
>>>
>>>- Franc Zabkar

>>
>>I have seen that. Drives are currently NTFS GPD. Tell me how I can
>>format to regular NTFS. Drives are empty. I think I may have to
>>disassemble and put drives in my pc and format from an IDE connection
>>using the Samsung floppy. I'd rather not do all that.



> I did it! Someone in the Vista NG gave me this link
> http://technet2.microsoft.com/window....mspx?mfr=true


> Thx everyone!


Congrats!

Arno
 
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