Boot camp Windows 7 failed to boot after shinking

Discussion in 'Windows, Linux & Others on the Mac' started by ronyclau, May 21, 2013.

  1. ronyclau macrumors newbie

    Joined:
    May 21, 2013
    #1
    My Windows 7 installation failed to boot after I shrink it with GParted.

    I have already sync the GPT and MBR.

    Everytime I select the Windows partition to boot, a black screen with a blinking cursor appears. If I have a bootable disk inserted in the SuperDrive, my Mac just starts booting up the disk after few ten seconds.

    I have attempted many times using Windows Repair Disk to fix the problem. The repair console found the Windows installation.

    However, bootrec /fixboot, bootrec /fixmbr, bootrec /rebuildbcd these commands have been tried for numerous times but don't help.

    chkdsk show no problem.

    I have also tried Repair Disk with Disk Utility and it said the disk is normal.

    I have tried rebuild the MBR with gdisk without success.

    I was tri-booting (Mac, Win 7, Ubuntu) before the shrink and it worked. It just breaks after this recent shrink.

    Does anyone have any idea to solve the problem? Thank you in advanced!!!

    Below is the output of sudo gpt -r -vv show /dev/rdisk0
    Code:
    gpt show: /dev/rdisk0: mediasize=500107862016; sectorsize=512; blocks=976773168
    gpt show: /dev/rdisk0: Suspicious MBR at sector 0
    gpt show: /dev/rdisk0: Pri GPT at sector 1
    gpt show: /dev/rdisk0: Sec GPT at sector 976773167
    start size index contents
    0 1 MBR
    1 1 Pri GPT header
    2 32 Pri GPT table
    34 6
    40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
    409640 841437072 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC
    841846712 262144
    842108856 1269544 3 GPT part - 48465300-0000-11AA-AA11-00306543ECAC
    843378400 288
    843378688 85071857 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
    928450545 15
    928450560 48322560 5 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
    976773120 15
    976773135 32 Sec GPT table
    976773167 1 Sec GPT header
    
    Below is the output of sudo fdisk /dev/disk0
    Code:
    Disk: /dev/disk0 geometry: 60801/255/63 [976773168 sectors]
    Signature: 0xAA55
    Starting Ending
    #: id cyl hd sec - cyl hd sec [ start - size]
    ------------------------------------------------------------------------
    1: EE 0 0 2 - 25 127 14 [ 1 - 409639]
    2: AF 25 127 15 - 1023 254 63 [ 409640 - 841437072] HFS+
    3: AF 1023 254 63 - 1023 254 63 [ 842108856 - 1269544] HFS+
    *4: 07 1023 254 63 - 1023 254 63 [ 843378688 - 85071857] HPFS/QNX/AUX
     
  2. MJL macrumors 6502a

    Joined:
    Jun 25, 2011
    #2
    Never ever manage the bootcamp partition through anything else than through OS X. Nine times out of the ten it will screw up. Best practise: use winclone to make a partition image and then with OS X's Bootcamp.app remove windows and afterwards recreate a new windows partition of the new size and use winclone to restore.
     
  3. ronyclau thread starter macrumors newbie

    Joined:
    May 21, 2013
    #3
    well, this is not the first time I do partitioning thru. GParted on this machine, but it is the first time I encountered a problem:confused:

    BTW, I found that when I boot Windows, the bootloader (bootmgr) actually NOT being loaded! Instead, my SuperDrive get booted. Strange!
     

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