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  1. #1
    Star Lounger
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    Win7 and GPT on an SSD

    I have a downloaded copy of the install for Win7 64 and am finally at that stage of loading the OS on the SSD boot drive in a completely new machine. The question is that after going through diskpart to get one partition only and converting it to GPT format in a command window, the install hangs saying that it cannot read the the format.
    What say ye, o lords of Cumputish Stuff? Go back to MBR? Is there a fix I'm missing in getting the install to work under GPT? Is th MBR vs GPT question an issue?

  2. #2
    Super Moderator bbearren's Avatar
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    Windows 7 cannot boot from a GPT disk. It can read GPT without any problems, and be installed on GPT, but it has to have a small FAT32 boot partition to boot from. You didn't mention UEFI, but that is the usual scenario for booting Windows x64.

    There is some info on this thread that may or may not be helpful.
    Create a new drive image before making system changes, in case you need to start over!

    "Let them that don't want it have memories of not gettin' any." "Gratitude is riches and complaint is poverty and the worst I ever had was wonderful." Brother Dave Gardner "Experience is what you get when you're looking for something else." Sir Thomas Robert Deware. "The problem is not the problem. The problem is your attitude about the problem. Do you understand?" Captain Jack Sparrow.
    Unleash Windows

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  4. #3
    Star Lounger
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    Okay. Here is another source of great, maybe a bit too detailed, information on the MBR/UEFI/WIN7/GPT imbroglio: http://msdn.microsoft.com/en-us/libr...(v=vs.85).aspx

    On the basis of input from here and from ASUS (mobo) and from Samsung (SSD for boot) I have a path forward.
    SSD (boot) will be MBR
    Any other SSD will be GPT
    The two 4TB drives will be GPT
    The two 2T and under drives will be MBR
    And I have a recipe for which should go with which controllers on the Mobo.

    If I were installing WIN 8 there would be differences.

    I will say that the Lounge, SAMSUNG, and ASUS have excellent support people but in the case of the latter two, the paper and on-line text & drawings are not complete or are misleading. That said, it has been a trip! Let's see if I now fetch up at a tranquil destination. For a guy who has built all his PCs himself since 1986, this has been a humbling experience. A whole lot of changes since the last build only 6 years ago.

  5. #4
    New Lounger Frozwire's Avatar
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    Quote Originally Posted by bbearren View Post
    Windows 7 cannot boot from a GPT disk. It can read GPT without any problems, and be installed on GPT, but it has to have a small FAT32 boot partition to boot from.
    This is true

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    Joe S (2014-06-11)

  7. #5
    Super Moderator CLiNT's Avatar
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    MBR always for your primary drive. Set the controller in BIOS to AHCI prior to installation.
    DRIVE IMAGING
    Invest a little time and energy in a well thought out BACKUP regimen and you will have minimal down time, and headache.

    Windows 8.1, 64 bit
    Motherboard: DX58SO2*Chipset: X58 Express/Intel ICH10*BIOS: SOX5820J.86A.0888.2012.0129.2203*Processor: Intel Core i7 CPU X 990
    GPU: Nvidia GTX 580*Memory: Corsair 12 GB, 4x3@1600*PSU: Corsair HX1000*Hard drives: REVO X2 160GB*OCZ VERT X3 120GB*5 mechanical storage drives (12 TB) total.

  8. #6
    Star Lounger
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    Oh yes. And I've found out a bunch of other things, too.

  9. #7
    Super Moderator bbearren's Avatar
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    Quote Originally Posted by CLiNT View Post
    MBR always for your primary drive. Set the controller in BIOS to AHCI prior to installation.
    Every OEM Windows 8/8.1 desktop/laptop has GPT for the primary drive. It will have a small EFI partition (FAT32) and a small MSR partition, but Windows and everything else will be installed on GPT.

    Windows 7 supports GPT and EFI. I dual boot Windows 7 Ultimate and Windows 8.1 Professional on my laptop, which I converted to UEFI/GPT.
    Create a new drive image before making system changes, in case you need to start over!

    "Let them that don't want it have memories of not gettin' any." "Gratitude is riches and complaint is poverty and the worst I ever had was wonderful." Brother Dave Gardner "Experience is what you get when you're looking for something else." Sir Thomas Robert Deware. "The problem is not the problem. The problem is your attitude about the problem. Do you understand?" Captain Jack Sparrow.
    Unleash Windows

  10. #8
    4 Star Lounger
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    For a high cost option ($40), you could get Bootit from TeraByte Unlimited.

    You could, however, try it for free (30 days).

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