Allow GPT Partition for Boot Partition (not System Partition)

Discussion in 'Windows Vista Installation' started by cvp, Oct 24, 2006.

  1. cvp

    cvp Guest

    This is a rephrase of a question I had asked, but now as a suggestion:

    Currently Vista client does not allow a GPT partition as either a system or
    a boot partition. I can understand the motivation for delaying support for
    the System Partition (the one you boot from), since the interactions with
    (the lack of) EFI support is problematic, but the boot partition (the one you
    put the system on) should be allowed to be a GPT Partition, since all the
    bootup file processing is complete before using the OS. This will remove the
    need for artificial partitioning schemes on >2TB arrays.


    ----------------
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    http://windowshelp.microsoft.com/co...osoft.public.windows.vista.installation_setup
     
    cvp, Oct 24, 2006
    #1
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  2. cvp

    Theo Guest

    From what I have read about GPT your "suggestion" may not
    be feasible with BIOS based systems. GPT is a feature of
    the EFI specifications. So, if it's a feature of EFI, how
    would you implement a bootable GPT in a BIOS environment?

    There was an article on the internet this past week that
    explained EFI and GPT quite well, but I can find the article
    now.
     
    Theo, Oct 24, 2006
    #2
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  3. Hello,
    Well he is asking for the boot partiton ( the one \Windows is on) not the
    system partition ( the one the system boots from)
    so it's not really a bios issue. If the ask was for the "system" partition
    then the bios would come into play.
    We really it's the disk not the partition or volume that is MBR or GPT. So
    the ask is that "system" partition be located on a GPT disk rather than a
    MBR disk. So the bios still points to the MBR disk to boot from, then the
    bootmanager\BCD points to \windows on the GPT disk.
    Let's point first to the this link:
    EFI and Windows Vista
    http://www.microsoft.com/whdc/system/platform/firmware/efibrief.mspx

    But it's not that easy to just enable the "boot" disk.
    There are a lot of things that come into play that need testing and
    potentially modifications when dealing with the new disk types.
    Just to mention a couple:
    For example deployment and imaging would have to take into account variable
    disk types
    Bitlocker would have to work with both disk types.
    It is planned as per the link above, it just won't make this release.

    Thanks,
    Darrell Gorter[MSFT]

    This posting is provided "AS IS" with no warranties, and confers no rights
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    < From what I have read about GPT your "suggestion" may not
    <be feasible with BIOS based systems. GPT is a feature of
    <the EFI specifications. So, if it's a feature of EFI, how
    <would you implement a bootable GPT in a BIOS environment?
    <
    <There was an article on the internet this past week that
    <explained EFI and GPT quite well, but I can find the article
    <now.
    <
    <
    <cvp wrote:
    <> This is a rephrase of a question I had asked, but now as a suggestion:
    <>
    <> Currently Vista client does not allow a GPT partition as either a system
    or
    <> a boot partition. I can understand the motivation for delaying support
    for
    <> the System Partition (the one you boot from), since the interactions
    with
    <> (the lack of) EFI support is problematic, but the boot partition (the
    one you
    <> put the system on) should be allowed to be a GPT Partition, since all
    the
    <> bootup file processing is complete before using the OS. This will remove
    the
    <> need for artificial partitioning schemes on >2TB arrays.
    <>
    <>
    <> ----------------
    <> This post is a suggestion for Microsoft, and Microsoft responds to the
    <> suggestions with the most votes. To vote for this suggestion, click the
    "I
    <> Agree" button in the message pane. If you do not see the button, follow
    this
    <> link to open the suggestion in the Microsoft Web-based Newsreader and
    then
    <> click "I Agree" in the message pane.
    <>
    <>
    http://windowshelp.microsoft.com/communities/newsgroups/en-us/default.mspx?m
    id=e63c0437-c4c5-467c-a6dc-639c037a0b89&dg=microsoft.public.windows.vista.in
    stallation_setup
    <
     
    Darrell Gorter[MSFT], Oct 24, 2006
    #3
  4. cvp

    cvp Guest

    Darrell, Thanks for the reply. You're correct in understanding my request. I
    didn't think it was a "no-cost" option, just much easier than solving for the
    system disk. Just bear in mind (for any SP) that there are situations that a
    GPT boot disk would ease.

     
    cvp, Oct 24, 2006
    #4
  5. Eric Kolotyluk, Oct 29, 2006
    #5
  6. cvp

    cvp Guest

    Eric, The simple answer is "Yes". It does it to the same extent that WinXP-64
    does (i.e. as a data partition only). In fact I'm running that way right now
    with a 5TB drive array. That goes for both 32-bit and 64-bit Vistas. There
    was also a statement that the 64-bit vista would allow boot/system partition
    use (only for an EFI compliant system), but that seems to have been delayed
    to a future release of Vista (possibly a service pack).
     
    cvp, Oct 29, 2006
    #6
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