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I recently upgraded to El Capitan OSX 10.11 and now can't boot into Windows.

If I restart the computer and hold Option down, the only option is OSX. If I use System Preferences to select the bootcamp partition as the startup disk, and then restart without the option key, I get

No bootable device -- insert boot disk and press any key.

I tried booting with VMware Fusion 8.0.1 and got a slightly different response (see image)

Snapshot of VMware

From what I've read, I may need to repair the MBR. Here is some investigation I ran sudo gpt -v -r show /dev/disk0

gpt show: /dev/disk0: mediasize=750156374016; sectorsize=512; blocks=1465149168
       start        size  index  contents
           0           1         PMBR
           1           1         Pri GPT header
           2          32         Pri GPT table
          34           6         
          40      409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
      409640  1268157456      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
  1268567096     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
  1269836632        1192         
  1269837824   195309568      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
  1465147392        1743         
  1465149135          32         Sec GPT table
  1465149167           1         Sec GPT header

And I ran sudo fdisk /dev/disk0

Disk: /dev/disk0    geometry: 91201/255/63 [1465149168 sectors]
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
------------------------------------------------------------------------
 1: EE 1023 254  63 - 1023 254  63 [         1 - 1465149167] <Unknown ID>
 2: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
 3: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
 4: 00    0   0   0 -    0   0   0 [         0 -          0] unused      

Some things I have tried without success include

  • Using rEFIt. There seems to be a problem running this on El Capitan.
  • Using sudo fdisk -e /dev/disk0. The write command fails with fdisk: /dev/disk0: Operation not permitted. Same result for sudo disk -i /dev/disk0.

My question. How can I make my bootcamp partition bootable again?

  • Perhaps I should mention that I am using full disk encryption in the Mac Partition. I have no idea if this is relevant. – Theodore Norvell Oct 13 '15 at 21:54
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Try using rEFInd instead of rEFIt. It's resolved multi-boot issues for me.

You can install Ubuntu for triple booting Windows, Mac and Ubuntu.

This article has some pointers.

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