GPT or MBR?


  1. Posts : 62
    Windows 7 Home Premium 64bit
       #1

    GPT or MBR?


    Hello, Not sure if I should set up my drives as gpt or mbr on a new system.
    My new hardware:
    MB- AsusP8Z68-V, UEFI BIOS
    OS HD- Crucial M4 64g
    Data HD- WD Caviar Black 750g

    From what Ive read if install Win 7 64bit on the SSD without making any changes Ill get a gpt disk. Recommended UEFI-Based Disk-Partition Configurations
    I realize I can install with a MBR if I want.

    Ive read some pros and cons. Windows and GPT FAQ I'm leaning toward GPT.

    Whats your advice? Thanks
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  3. Posts : 62
    Windows 7 Home Premium 64bit
    Thread Starter
       #3

    @theog
    In the tut you referenced down the bottom theres a warning:
    "You CANNOT make a sector-by-sector copy of GPT disks. The Disk and Partition GUIDs will no longer be unique. This must never happen. You can make a sector-by-sector copy of the contents of ESP or basic data partitions."

    What exactly is a sector-by-sector copy of the disk? Does this mean I cant clone it?
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  4. Posts : 11,408
    ME/XP/Vista/Win7
       #4

    Does this mean I cant clone it?
    Why would you need to clone a new rig?
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  5. Posts : 62
    Windows 7 Home Premium 64bit
    Thread Starter
       #5

    I dont want to clone it. I want to know what a sector to sector copy of a disk is.
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  6. Posts : 11,408
    ME/XP/Vista/Win7
       #6

    That is what cloning is.
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  7. Posts : 62
    Windows 7 Home Premium 64bit
    Thread Starter
       #7

    Got it.
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  8. mjf
    Posts : 5,969
    Windows 7x64 Home Premium SP1
       #8

    77273GU said:
    @theog
    In the tut you referenced down the bottom theres a warning:
    "You CANNOT make a sector-by-sector copy of GPT disks. The Disk and Partition GUIDs will no longer be unique. This must never happen. You can make a sector-by-sector copy of the contents of ESP or basic data partitions."

    What exactly is a sector-by-sector copy of the disk? Does this mean I cant clone it?
    It's actually a good point to raise.

    I would also check Imaging software compatibility with GPT before making the plunge. I don't think Macrium Reflect Free for example supports GPT.
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  9. Posts : 62
    Windows 7 Home Premium 64bit
    Thread Starter
       #9

    @mjf
    Thats a concern I have, what imaging and partition programs will I be able to use. (Id like to use a free program)
    I checked free Macrium a while back and thought it supported GPT disks. Just double checked and it doesn't. I must have checked the pay version.

    Just checked Acronis WD edition and cant tell if it supports GPT disks. I emailed WD with a question.

    I also checked Partition Wizard a while back and it supported GPT disks. Ill have to check that again also. Must have been late when I was checking.
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