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Can't boot into windows after resizing partitions

I tried to resize my bootcamp and mac partitions recently

I cannot boot into windows now

Get an error about missing MBR

Do you think you could help me here?

I read about using GPT fdisk on another thread

These are the results I got from it

Wanted to check before doing anything


Sanjayas-MacBook-Pro:~ sanjaya83$ sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 38913/255/63 [625142448 sectors]

Signature: 0xAA55

Starting Ending

#: id cyl hd sec - cyl hd sec [ start - size]

------------------------------------------------------------------------

1: EE 1023 254 63 - 1023 254 63 [ 1 - 409639] <Unknown ID>

2: AF 1023 254 63 - 1023 254 63 [ 409640 - 349609376] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 350019016 - 1269536] Darwin Boot

4: 0C 1023 254 63 - 1023 254 63 [ 351289344 - 273852416] Win95 FAT32L

Sanjayas-MacBook-Pro:~ sanjaya83$ sudo gdisk /dev/disk0

GPT fdisk (gdisk) version 1.0.1


Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

NOTE: Write test failed with error number 1. It will be impossible to save

changes to this disk's partition table!

You may need to deactivate System Integrity Protection to use this program. See

https://www.quora.com/How-do-I-turn-off-the-rootless-in-OS-X-El-Capitan-10-11

for more information.


Partition table scan:

MBR: hybrid

BSD: not present

APM: not present

GPT: present


Found valid GPT with hybrid MBR; using GPT.


Command (? for help): p

Disk /dev/disk0: 625142448 sectors, 298.1 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): 55739070-E42E-4414-947D-F1AAD2EB65D0

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 625142414

Partitions will be aligned on 8-sector boundaries

Total free space is 1453 sectors (726.5 KiB)


Number Start (sector) End (sector) Size Code Name

1 40 409639 200.0 MiB EF00 EFI System Partition

2 409640 350019015 166.7 GiB AF00 Customer

3 350019016 351288551 619.9 MiB AB00 Recovery HD

4 351289344 625141759 130.6 GiB 0700 BOOTCAMP


Command (? for help):

MacBook Pro (13-inch Early 2011), OS X El Capitan (10.11.1)

Posted on Dec 1, 2015 5:12 PM

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152 replies

Can't boot into windows after resizing partitions

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