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Clean disk before clean install?

  1. #1


    Posts : 59
    Windows 8 PRO 64bit

    Clean disk before clean install?


    hello
    I had many problems with BSOD crashes, and decided to make a new clean install (SSD or harddisk).
    If I make a new clean install (no upgrade) is it enough to create 1 continuous unallocated disk and then it will make a clean install
    Or do I have to "clean up" my old disk first before making a clean install?

      My System SpecsSystem Spec

  2. #2


    You can delete all of the partitions on the disk that you're installing Windows to. The installer will automatically create the partitions that it needs (2 for an MBR disk, 3 for GPT), and format them. It takes very little time, at least on an SSD.
      My System SpecsSystem Spec

  3. #3


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Try Cleaning the HD Drive, using Step one in this tutorial:
    SSD / HDD : Optimize for Windows Reinstallation - Windows 7 Forums
    Than type> convert gpt



    As the Asus P8Z77-V has a uEFI/BIOS firmware:
    UEFI (Unified Extensible Firmware Interface) - Install Windows 8 with
      My System SpecsSystem Spec

  4. #4


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Quote Originally Posted by bobkn View Post
    You can delete all of the partitions on the disk that you're installing Windows to. The installer will automatically create the partitions that it needs (2 for an MBR disk, 3 for GPT), and format them. It takes very little time, at least on an SSD.
    3 for Windows 7.
    4 for Windows 8.
      My System SpecsSystem Spec

  5. #5


    Posts : 59
    Windows 8 PRO 64bit


    Quote Originally Posted by theog View Post
    Try Cleaning the HD Drive, using Step one in this tutorial:
    SSD / HDD : Optimize for Windows Reinstallation - Windows 7 Forums
    Than type> convert gpt

    As the Asus P8Z77-V has a uEFI/BIOS firmware:
    UEFI (Unified Extensible Firmware Interface) - Install Windows 8 with
    thanks for the replies. I have some more questions:

    Is cleaning of the HD drive necessary or just recommended? What are the benefits compared to just making 1 unallocated disk during clean install.

    With my motherboard, do you recommend an MBR install or UEFI GPT? As a non-expert, MBR seems easier. I prefer an easy system that is less likely to give BSOD crashes (I had many; that is why I want to do a new clean install).
      My System SpecsSystem Spec

  6. #6


    Quote Originally Posted by theog View Post
    Quote Originally Posted by bobkn View Post
    You can delete all of the partitions on the disk that you're installing Windows to. The installer will automatically create the partitions that it needs (2 for an MBR disk, 3 for GPT), and format them. It takes very little time, at least on an SSD.
    3 for Windows 7.
    4 for Windows 8.
    Huh?

    My SSD was set up as a GPT drive, on a UEFI motherboard. Win8 gave it 3 partitions: a 300MB recovery partition, a 100 MB EFI system partition, and the rest of the drive in a single partition.

    As far as I know, no motherboard with UEFI requires that the boot disk be GPT. MBR seems to be more nearly the default. I went with GPT as an experiment; took me a while to find that I had to format the USB flash drive that I was installing from as FAT32 to get it recognized for the UEFI installation. (NTFS, I could only do an MBR installation.)

    Setting the disk to GPT as above seems to be unnecessary; the Win8 installer will take care of that detail, or change it back to MBR if a UEFI installation is not done.

    MBR may be the safest choice. I dimly recall suggestions that some disk utilities aren't ready for GPT.
      My System SpecsSystem Spec

  7. #7


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Quote Originally Posted by turboman View Post
    Quote Originally Posted by theog View Post
    Try Cleaning the HD Drive, using Step one in this tutorial:
    SSD / HDD : Optimize for Windows Reinstallation - Windows 7 Forums
    Than type> convert gpt

    As the Asus P8Z77-V has a uEFI/BIOS firmware:
    UEFI (Unified Extensible Firmware Interface) - Install Windows 8 with
    thanks for the replies. I have some more questions:

    Is cleaning of the HD drive necessary or just recommended? What are the benefits compared to just making 1 unallocated disk during clean install.

    With my motherboard, do you recommend an MBR install or UEFI GPT? As a non-expert, MBR seems easier. I prefer an easy system that is less likely to give BSOD crashes (I had many; that is why I want to do a new clean install).

    On a HD Drive you can write zero's to the drive by using CLEAN ALL, to delete all DATA, this not recommended for SSD's.


    For uEFI/BIOS firmware, GPT recommended.
      My System SpecsSystem Spec

  8. #8


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Quote Originally Posted by bobkn View Post
    Quote Originally Posted by theog View Post
    Quote Originally Posted by bobkn View Post
    You can delete all of the partitions on the disk that you're installing Windows to. The installer will automatically create the partitions that it needs (2 for an MBR disk, 3 for GPT), and format them. It takes very little time, at least on an SSD.
    3 for Windows 7.
    4 for Windows 8.
    Huh?

    My SSD was set up as a GPT drive, on a UEFI motherboard. Win8 gave it 3 partitions: a 300MB recovery partition, a 100 MB EFI system partition, and the rest of the drive in a single partition.

    As far as I know, no motherboard with UEFI requires that the boot disk be GPT. MBR seems to be more nearly the default. I went with GPT as an experiment; took me a while to find that I had to format the USB flash drive that I was installing from as FAT32 to get it recognized for the UEFI installation. (NTFS, I could only do an MBR installation.)

    Setting the disk to GPT as above seems to be unnecessary; the Win8 installer will take care of that detail, or change it back to MBR if a UEFI installation is not done.

    MBR may be the safest choice. I dimly recall suggestions that some disk utilities aren't ready for GPT.
    Windows 7.
    Click image for larger version

    Windows 8.
    Click image for larger version
      My System SpecsSystem Spec

  9. #9


    Posts : 59
    Windows 8 PRO 64bit


    hello bobkn, theog,
    Thanks for the answers.
    I am a non-expert and getting confused. bobkn recommends MBR, theog GPT.
    I looked at the cleaning disk instructions. Looks very complicated. Also, is my understanding correct that this whole procedure is not recommended for SSD, or should only parts of the procedure be left out?
    The GPT installation instructions seem complicated. Is it possible and/or easier to go back to a normal BIOS and to a non-UEFI installations?
    Sorry for the many questions.
      My System SpecsSystem Spec

  10. #10


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    is my understanding correct that this whole procedure is not recommended for SSD
    You can use CLEAN or CLEAN ALL on HD Drive's,

    CLEAN ALL is not recommended for SSD's.
      My System SpecsSystem Spec

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Clean disk before clean install?
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