Windows 8 and 8.1 Forums


Retailed windows 8 vs OEM windows 8

  1. #1

    Retailed windows 8 vs OEM windows 8


    I upgraded and am installing windows 8 onto my laptop, the windows 8 that CAME from factory on my OLD HDD has 4 partitions

    1: Recovery partition, 2: 1: system partition, 3: MSR (Reserved) partition, and 4: Primary partition.

    but when I run windows 8 install of the USB boot it does 2

    1: System Partition, and 2: Primary Partition

    do i NEED the other MBR and RECOVERY?

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  2. #2


    Posts : 1,720
    Windows 8.1 Pro


    Not necessarily, that's classified as a clean install but I would suggest making your own recovery/backup image.
    Hope it goes well for ya; keep us posted!
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  3. #3


    Sydney, Nova Scotia, Canada
    Posts : 6,490
    Windows 10 Education 64 Bit


    The factory OEM install adds the ability to do a factory restore. IE, Windows 8 Reset without the need for inserting install media. You can also create a recovery thumb drive and copy the recovery partition to the drive. The extra factory recovery partition contains an image of the original factory install, with all the factory bloat ware. Doing a reset from that takes you back to the OOBE. Out Of the Box Experience. Its just like it was the first time you turned the PC on. Pick your language etc.
    If you do a clean install with a DVD you don't get the extra recovery partition. If you try to do a Reset you get prompted for your install media (DVD or thumb drive). Your recovery thumb drive will be a lot smaller and limited in what you can do with it. The clean install can't reproduce what was done at the factory. Since you now have a DVD you don't need those extra partitions. They were added because no disks were shipped with the PC, and are there for recovery.
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  4. #4


    San Jose - California
    Posts : 2,847
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64


    There is a difference between the 2:
    1. The factory installed your Windows 8 using EFI mode and it has 4 partitions: 300MB, 100MB, 128MB Reserved and Your Windows OS and it use the GPT disk type. With EFI, it also supports the Secure Boot: a feature on UEFI-based PCs that helps increase the security of a PC by preventing unauthorized software from running on a PC during the boot sequence. It checks that each piece of software has a valid signature, including the operating system that will be loaded.
    2. When you installed the upgrade, you installed it in legacy MBR Mode and it has 2 partitions: 350MB Reserved partition and your Windows OS.
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  5. #5


    Sydney, Nova Scotia, Canada
    Posts : 6,490
    Windows 10 Education 64 Bit


    Quote Originally Posted by topgundcp View Post
    There is a difference between the 2:
    1. The factory installed your Windows 8 using EFI mode and it has 4 partitions: 300MB, 100MB, 128MB Reserved and Your Windows OS and it use the GPT disk type. With EFI, it also supports the Secure Boot.
    2. When you installed the upgrade, you installed it in legacy MBR Mode and it has 350MB Reserved partition and your Windows.
    Good point, missed that.
    If you didn't change any BIOS options you should have gotten two boot options for your DVD or Thumb Drive. One with EUFI in front of it and one without.
    BIOS Mode - See if Windows Boot in UEFI or Legacy Mode
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  6. #6


    Quote Originally Posted by alphanumeric View Post
    The factory OEM install adds the ability to do a factory restore. IE, Windows 8 Reset without the need for inserting install media. You can also create a recovery thumb drive and copy the recovery partition to the drive. The extra factory recovery partition contains an image of the original factory install, with all the factory bloat ware. Doing a reset from that takes you back to the OOBE. Out Of the Box Experience. Its just like it was the first time you turned the PC on. Pick your language etc.
    If you do a clean install with a DVD you don't get the extra recovery partition. If you try to do a Reset you get prompted for your install media (DVD or thumb drive). Your recovery thumb drive will be a lot smaller and limited in what you can do with it. The clean install can't reproduce what was done at the factory. Since you now have a DVD you don't need those extra partitions. They were added because no disks were shipped with the PC, and are there for recovery.
    Thank you for explaining it into detail, greatly appreciated

    Quote Originally Posted by topgundcp View Post
    There is a difference between the 2:
    1. The factory installed your Windows 8 using EFI mode and it has 4 partitions: 300MB, 100MB, 128MB Reserved and Your Windows OS and it use the GPT disk type. With EFI, it also supports the Secure Boot: a feature on UEFI-based PCs that helps increase the security of a PC by preventing unauthorized software from running on a PC during the boot sequence. It checks that each piece of software has a valid signature, including the operating system that will be loaded.
    2. When you installed the upgrade, you installed it in legacy MBR Mode and it has 2 partitions: 350MB Reserved partition and your Windows OS.
    thank you as well for explaining that also

    forgot to mention, i upgraded to SSD haha so, not to windows 8 just an SSD, finding media for windows 8 was kinda a pain, but i guess its a good thing they imprint the License key into the bios XD
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  7. #7


    Sydney, Nova Scotia, Canada
    Posts : 6,490
    Windows 10 Education 64 Bit


    I tried a bunch of stuff when I swapped out the spinner in my laptop for an SSD. In the end nothing worked the way I wanted and I did a clean install. At that time I wasn't an MVP and didn't have access to TechNet or MSDN, so finding an ISO was a bit of a pain. Now I can get them right from Microsoft and not worry about any "bonus extras".
      My System SpecsSystem Spec

  8. #8


    Posts : 1,875
    Windows 10 Pro Prieview x64


    Quote Originally Posted by topgundcp View Post
    ...Secure Boot: a feature on UEFI-based PCs that helps increase the security of a PC by preventing unauthorized software from running on a PC during the boot sequence. It checks that each piece of software has a valid signature, including the operating system that will be loaded.
    Does this include rootkit virus (if that is the word) that put themselves in a hidden sector/partition?
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  9. #9


    Posts : 5,360
    7/8/ubuntu/Linux Deepin


    I believe EFI would be an open invitation for malware writers. The secure boot thing is an additional thing to work around that. Unfortunatley, it adds extra complications to an already complex system and makes it more difficult to run things you might want, e.g. installing alternative o/s.
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