Q: Bootcamp partition does not work after upgrade to El Capitan - please help!

Hi!

I cannot for the life of me get my Bootcamp partition to boot!

It is discoverable using Diskutil, but since I bought a new Macbook Pro (Retina, 13 inch, Early 2015) and was forced into Yosemite, I cannot get Bootcamp to work.

I have since upgraded to El Capitan.

I have been following vaious posts (Boot Camp disappeared after El Capitan update) and have followed instructions to resize the partition to what Testdisk was showing (MS Data                854654976  977104888  122449913):

sudo gdisk /dev/rdisk0

Password:

GPT fdisk (gdisk) version 1.0.1

Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

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/rdisk0: 977105060 sectors, 465.9 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): *HIDDEN*

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 977105026

Partitions will be aligned on 8-sector boundaries

Total free space is 745 sectors (372.5 KiB)

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

   1              40          409639   200.0 MiB   EF00  EFI System Partition

   2          409640       853384831   406.7 GiB   AF05  Customer

   3       853384832       854654367   619.9 MiB   AB00  Recovery HD

   4       854654976       977104895   58.4 GiB    0700  WINDOWS

Command (? for help): D

Partition number (1-4): 4

Command (? for help): N

Partition number (4-128, default 4): 4

First sector (34-977105026, default = 854654368) or {+-}size{KMGTP}: 854654976

Last sector (854654976-977105026, default = 977105026) or {+-}size{KMGTP}: +122449913

Current type is 'Apple HFS/HFS+'

Hex code or GUID (L to show codes, Enter = AF00): 0700

Changed type of partition to 'Microsoft basic data'

Command (? for help): P

Disk /dev/rdisk0: 977105060 sectors, 465.9 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): *HIDDEN*

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 977105026

Partitions will be aligned on 8-sector boundaries

Total free space is 752 sectors (376.0 KiB)

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

   1              40          409639   200.0 MiB   EF00  EFI System Partition

   2          409640       853384831   406.7 GiB   AF05  Customer

   3       853384832       854654367   619.9 MiB   AB00  Recovery HD

   4       854654976       977104888   58.4 GiB    0700  Microsoft basic data

Command (? for help): W

Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING

PARTITIONS!!

Do you want to proceed? (Y/N): Y

OK; writing new GUID partition table (GPT) to /dev/rdisk0.

Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

Warning: The kernel may continue to use old or deleted partitions.

You should reboot or remove the drive.

The operation has completed successfully.

And then followed instructions to make Bootable, however I am still having no joy.

sudo gdisk /dev/rdisk0

GPT fdisk (gdisk) version 1.0.1

Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

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/rdisk0: 977105060 sectors, 465.9 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): *HIDDEN*

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 977105026

Partitions will be aligned on 8-sector boundaries

Total free space is 752 sectors (376.0 KiB)

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

   1              40          409639   200.0 MiB   EF00  EFI System Partition

   2          409640       853384831   406.7 GiB   AF05  Customer

   3       853384832       854654367   619.9 MiB   AB00  Recovery HD

   4       854654976       977104888   58.4 GiB    0700  Microsoft basic data

Command (? for help): R

Recovery/transformation command (? for help): O

Disk size is 977105060 sectors (465.9 GiB)

MBR disk identifier: 0x028A47A7

MBR partitions:

Number  Boot  Start Sector   End Sector   Status      Code

   1                     1       409639   primary     0xEE

   2                409640    853384831   primary     0xAC

   3             853384832    854654367   primary     0xAB

Recovery/transformation command (? for help): H

WARNING! Hybrid MBRs are flaky and dangerous! If you decide not to use one,

just hit the Enter key at the below prompt and your MBR partition table will

be untouched.

Type from one to three GPT partition numbers, separated by spaces, to be

added to the hybrid MBR, in sequence: 2 3 4

Place EFI GPT (0xEE) partition first in MBR (good for GRUB)? (Y/N): Y

Creating entry for GPT partition #2 (MBR partition #2)

Enter an MBR hex code (default AF):

Set the bootable flag? (Y/N): N

Creating entry for GPT partition #3 (MBR partition #3)

Enter an MBR hex code (default AB):

Set the bootable flag? (Y/N): N

Creating entry for GPT partition #4 (MBR partition #4)

Enter an MBR hex code (default 07):

Set the bootable flag? (Y/N): Y

Recovery/transformation command (? for help): O

Disk size is 977105060 sectors (465.9 GiB)

MBR disk identifier: 0x028A47A7

MBR partitions:

Number  Boot  Start Sector   End Sector   Status      Code

   1                     1       409639   primary     0xEE

   2                409640    853384831   primary     0xAF

   3             853384832    854654367   primary     0xAB

   4      *      854654976    977104888   primary     0x07

Recovery/transformation command (? for help): W

Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING

PARTITIONS!!

Do you want to proceed? (Y/N): Y

OK; writing new GUID partition table (GPT) to /dev/rdisk0.

Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

Warning: The kernel may continue to use old or deleted partitions.

You should reboot or remove the drive.

The operation has completed successfully.

Now (after above) Testdisk:

SIP is still disabled. Bootcamp is UNMOUNTED using diskutil.

Please let me know what I am missing here! Hopefully something simple...

Please also let me know if I have posted anything here that puts my information as a security risk.

Thanks

MV