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Discuss URGENT HELP! Screwed Up Hybrid MBR at the General - Mountain Lion 10.8.x -; Okay, So I had made an hybrid MBR and installed Mac on the first and ...
  1. #1
    Newbie Array

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    Default URGENT HELP! Screwed Up Hybrid MBR

    Okay, So I had made an hybrid MBR and installed Mac on the first and Windows on the second partition.

    After sometime, i started having problems with mac, so i overwrote that partition with the latest version of windows 8 beta.

    Now when i finally got another hard drive, I installed lion on that. Everything was fine till then.
    Whenever i booted up mac, it kept showing me disc not recognised ( the hybrid MBR disk) so i did the biggest mistake of my life by clicking repair
    And then poof ! everything was gone. I've tried lots of tools to recover my partitions ( there were 3 totally) but failed!

    Then I came across this awesome piece of software called gdisk (GPT-fdisk). But i'm unsure how to use it properly.

    When i run it, it says the following:

    1) MBR: Hybrid
    2) GPT: Present

  2. #2
    Rookie Array Antartica's Avatar

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    Mar 2009
    Riyadh, Saudi Arabia
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    its simple... repartition ur HDD with MBR using Disk Utitlity on the install disk....1st HSF Journaled, 2nd MS DOS, Etc and install your OSx after this Windows...
    i think up till here u were fine... if in case u cant boot 4m mac, use install DVD to access all your harddrives, select ur installed OSX n after loading install ur bootloader again... Chameleon or Chimera after this ur dual boot will work perfect...

    Note: Never use you windows CD to repair Boot.

    Do reply ur action / Reaction

    If Gpart is able to access ur OSx partition...just add boot flag to it and boot ur system, USE ONLY MBR partition if u wana dual boot avoid GPT
    Last edited by Antartica; 02-13-2013 at 10:26 AM.
    OS : Windows 8 *(X64) (Dual Boot)
    OSx: Mountain LION 10.8.2 (Working perfect)
    CPU : Intel Core i7 870 @ 2.93 GHz
    MB : Gigabyte P55A-UD3R & Bios Ver: F8
    Northbridge : Intel DMI Host Bridge , Rev ID : 11
    Southbridge : Intel P55,Rev ID : 06
    Memory : 12 GB,DDR3
    GPU : Radeon HD 4670 at 1024 MB DVM
    HDD : WDC 931.51 GB SATA II
    HDD : WDC 931.51 GB SATA II
    Ethernet : RTL8111/8168B PCI Express
    Multimedia cards : Intel Corp. 5 Series/3400 Series HD Audio & ATI HDMI Audio [Radeon HD 4000 series]



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