Q: bootcamp fails to start after upgrade to macOS Sierra

Can you disable Paragon and test? If it does not work, please post the output of the following OS X Terminal commands.

diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

The "sudo" commands need you to enter your password, when prompted.

I have this question too, but with different conditions:

I succesfull upgraded El Capitan to MacOs Sierra on:

MacBook Pro (2010 second half)

8 GB RAM

Windows 7 Pro on bootcamp.

When I try to start with bootcamp, the display become black with a white blinking cursor in the upper left corner (as usual), but the cursor remains in the same condition (I also waited several hours) and Windows will not start.

I tried also with F8 button to intercept the boot to start in debug mode, but doesn't work.

I performed the suggested commands in the previous message and the result is as follows:

Thanks for your help

Can you post the output of

sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null | hexdump -C

You have two internal disks. Is this a recent change?

Loner T, thanks for your prompt response.

No, I added the SSD drive in May 2014 (when I was working with Mavericks, I believe) and bootcamp continued to operate in the transition to El Capitan.

in the meantime I downloaded and installed Parallels Desktop and VMware Fusion (trial version) and neither of them is able to run bootcamp as a Virtual Machine.

always thanks for your attention.

I performed the suggested command in the previous message and the result is as follows:

very similar with my problems :

- I have create 3 partitions on my hdd : MAC 10.11.6 Capitan, DATA and Windows 10 64 bit.

- DATA partitions is writable by both OS (with paragon hdd utility for mac)

Everything is OK before upgrade to Sierra today and after reboot, option for windows boot disappear .. :-(

Could you please help me to get back windows partitions?

If not possible, how can I uninstall Sierra and backward to Capitan?

George.

You have either El Capitan or Sierra. You will need to disable SIP by booting into Local Recovery (using Command+R - not Internet Recovery) and click on Utilities -> Terminal and type

csrutil status

csrutil disable

csrutil status

Boot normally and check the output of csrutil status which should now be disabled.

Run the following commands (ignore the i386 MBR error but not any others) and test.

sudo fdisk -e /dev/disk0

p

setpid 4

07

flag 4

p

w

y

Reboot and Test.

George Aprianto wrote:

 

Could you please help me to get back windows partitions?

If not possible, how can I uninstall Sierra and backward to Capitan?

Please start a new discussion, and post the output of

diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

What is the year/model of your Mac?

Oh, sorry ...Had moved tobootcamp problems

Thanks for your responses.

[Solved]

Loner T, you are a genius!

I tried with success to start a couple of times both Windows and OS X.

I was just a bit worried because your procedure ends leaving open fdisk prompt, but it was all good!

in any case the result of the commands that I typed is the following:

I put the word "solved" in square brackets in the top of the message; I did not understand if this is the right way.

Anyway, thank you very much.

Guglielmo

Excellent. Please back up OS X, Windows and create a Windows System Restore point.

If both my Mac OS and BOOTCAMP partitions are in disk1 not disk0, do I just change the command to 1 in these scripts?

Thank you beforehand.

gugalpm wrote:

 

If both my Mac OS and BOOTCAMP partitions are in disk1 not disk0, do I just change the command to 1 in these scripts?

Yes. If you want to post the output of the two "sudo" commands, we can verify them.

Gustavos-iMac:~ gustavolpmachado$ diskutil list

/dev/disk0 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *1.0 TB     disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:                  Apple_HFS Macintosh HD            874.1 GB   disk0s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

   4:                  Apple_HFS Backup                  125.1 GB   disk0s4

/dev/disk1 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *120.0 GB   disk1

   1:                        EFI EFI                     209.7 MB   disk1s1

   2:                  Apple_HFS Macintosh SSD           87.1 GB    disk1s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk1s3

   4:       Microsoft Basic Data BOOTCAMP                32.0 GB    disk1s4

Gustavos-iMac:~ gustavolpmachado$ diskutil cs list

No CoreStorage logical volume groups found

Gustavos-iMac:~ gustavolpmachado$ sudo gpt -vv -r show /dev/disk1

Password:

gpt show: /dev/disk1: mediasize=120034123776; sectorsize=512; blocks=234441648

gpt show: /dev/disk1: Suspicious MBR at sector 0

gpt show: /dev/disk1: Pri GPT at sector 1

gpt show: /dev/disk1: Sec GPT at sector 234441647

      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  170205096      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

  170614736    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

  171884272        272       

  171884544   62556160      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

  234440704        911       

  234441615         32         Sec GPT table

  234441647          1         Sec GPT header

Gustavos-iMac:~ gustavolpmachado$ sudo fdisk /dev/disk1

Disk: /dev/disk1 geometry: 14593/255/63 [234441648 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 -  170205096] HFS+      

3: AB 1023 254  63 - 1023 254  63 [ 170614736 -    1269536] Darwin Boot

*4: 0B 1023 254  63 - 1023 254  63 [ 171884544 -   62556160] Win95 FAT-32

Here's the result of every one of the commands. I've already disabled csrutil.

Can you see Windows files in the Bootcamp partition on Disk1 when using OS X Finder?