MacTavish_10
Level 1 (9 points)

Q: Repairing Boot Camp after creating new partition

Hi


I'm running OS X 10.9 and Windows 7 x64 Pro.

 

I set up Boot Camp to dual-boot Windows on my MacBook Pro Retina. Everything was fine. And just yesterday Apple released the Yosemite Beta for the public and I wanted to download this and give it a try. After some research, I found that creating a separate partition was the way to go, and so I made another partition.

I wasn't aware that this would affect my Windows partition as I thought it was completely different.


So now, when I boot up, there is no option to boot with Windows. But when I boot the Mac and select Startup Disk, it shows Boot Camp is still there and all my files etc are still there.


I have a 256SSD, 160GB was for the Mac, and I have 90GB set for Windows.


I made the new partition to 40GB (and the Mac was now 120GB).

 

Then once I completed that part, I restarted my Mac and the Windows boot option was no longer there.

 

I didn't even install the Yosemite yet. I went to Disk Utility and deleted the 40GB partition that I made.

 

Now I don't know what to do. I have a lot of important things which are still on my Windows. Is there a way to restore normal Boot Camp functionality?

MacBook Pro (Retina, 13-inch, Late 2013), OS X Mavericks (10.9.4)

Posted on Jul 25, 2014 8:20 AM

by Loner T,Solvedanswer
Loner T Loner T
Level 7 (23,898 points)
Safari
A:

sudo fdisk -e /dev/disk0

p

setpid 4

07

flag 4

p

write

y

 

Now Reboot and hold the ALT key and check if Windows shows up and is bootable.

 

If you get 'missing operating system', then Windows Startup Repair and see if Windows will comeback alive.

 

If you notice the difference between the Disk Utility screen (two partitions) vs the fdisk output (or the GPT) there are 'hidden' partitions and the MBR partitioning style used for Windows allows a maximum of 4 partitions. If you need further explanation, read the original thread.

 

Yosemite should not be installed on any machine that is critical to you. If only partitioning was done, but Yosemite was NOT installed, you are in better shape. Yosemite ignores and is unaware of bootcamp and creates an additional Recovery HD and moves things around.

Posted on Jul 25, 2014 9:04 AM

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MacTavish_10

Q: Repairing Boot Camp after creating new partition

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  • by Loner T,

    Loner T Loner T May 3, 2016 5:59 AM in response to shorberg
    Level 7 (23,898 points)
    Safari
    May 3, 2016 5:59 AM in response to shorberg

    Please start a new discussion to avoid confusion. The Fdisk and GPT command whole disks (disk0, disk1,...) not individual slices (disk0s1, disk0s4,...). Use the whole disks for your commands to post the output of the new discussion.

  • by om sushant,

    om sushant om sushant May 11, 2016 11:06 AM in response to Loner T
    Level 1 (4 points)
    May 11, 2016 11:06 AM in response to Loner T

    hey , i have the same problem. i did this

    sudo fdisk -e /dev/disk0

    p

    setpid 4

    07

    flag 4

    p

    write

    y


    but then it says: operation not permitted


    here is the screen shot:

    a.jpg


    And i have already downloaded ( GPT fdisk ).  please tell me what to do now.

  • by Loner T,

    Loner T Loner T May 11, 2016 1:06 PM in response to om sushant
    Level 7 (23,898 points)
    Safari
    May 11, 2016 1:06 PM in response to om sushant

    The steps you used are for updating an existing MBR. You do not have an existing one. Please start a new discussion and post problem/issue details.

  • by sartzsche,

    sartzsche sartzsche Jun 4, 2016 6:36 PM in response to Loner T
    Level 1 (12 points)
    Windows Software
    Jun 4, 2016 6:36 PM in response to Loner T

    Same problem, new thread here: Added new partition, Bootcamp boot option now gone

     

    Thank you for your help!

  • by vaijensen,

    vaijensen vaijensen Jul 28, 2016 12:11 AM in response to MacTavish_10
    Level 1 (4 points)
    Windows Software
    Jul 28, 2016 12:11 AM in response to MacTavish_10

    Loner T,

     

    Thanks for all of your help.

     

    When I was following the advice you suggested, I ran into a problem at the 'write' command. The terminal gave me an "operation not permitted". I am the sole user of my computer.

     

    Please help! Been stuck with this issue for awhile now

  • by magicflea,

    magicflea magicflea Aug 4, 2016 5:45 AM in response to Loner T
    Level 1 (4 points)
    Aug 4, 2016 5:45 AM in response to Loner T

    I too want to thank you Loner T. Your posted terminal commands restored the startup option to my Win10 Bootcamp installation.

  • by Loner T,

    Loner T Loner T Aug 4, 2016 5:55 AM in response to vaijensen
    Level 7 (23,898 points)
    Safari
    Aug 4, 2016 5:55 AM in response to vaijensen

    vaijensen wrote:

     

     

    When I was following the advice you suggested, I ran into a problem at the 'write' command. The terminal gave me an "operation not permitted". I am the sole user of my computer.

     

    If you are running El Capitan, you need to disable SIP by booting into Local Recovery (not Internet Recovery) and running Utilities -> Terminal -> csrutil disable . Check with csrutil status before you boot normally.

  • by Loner T,

    Loner T Loner T Aug 4, 2016 5:56 AM in response to magicflea
    Level 7 (23,898 points)
    Safari
    Aug 4, 2016 5:56 AM in response to magicflea

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

  • by thanawatfromlamphun,

    thanawatfromlamphun thanawatfromlamphun Aug 10, 2016 5:30 AM in response to Loner T
    Level 1 (8 points)
    Windows Software
    Aug 10, 2016 5:30 AM in response to Loner T

    S__63717379.jpg

    what happen when i try to recovery ? Its not Apple logo

  • by Loner T,

    Loner T Loner T Aug 10, 2016 5:35 AM in response to thanawatfromlamphun
    Level 7 (23,898 points)
    Safari
    Aug 10, 2016 5:35 AM in response to thanawatfromlamphun

    This is Internet Recovery, because your internal Local Recovery is corrupted or you used Command+Opt+R during boot up.

     

    Please also see About OS X Recovery - Apple Support .

  • by thanawatfromlamphun,

    thanawatfromlamphun thanawatfromlamphun Aug 10, 2016 5:43 AM in response to Loner T
    Level 1 (8 points)
    Windows Software
    Aug 10, 2016 5:43 AM in response to Loner T

    i hold down command+R but its happened, i'm not command+Opt+R or Internet Recovery

  • by Loner T,

    Loner T Loner T Aug 10, 2016 5:54 AM in response to thanawatfromlamphun
    Level 7 (23,898 points)
    Safari
    Aug 10, 2016 5:54 AM in response to thanawatfromlamphun

    Your internal Recovery HD is corrupt. What are you trying to recover? Please start a new discussion and post details of your problem.

  • by thanawatfromlamphun,

    thanawatfromlamphun thanawatfromlamphun Aug 10, 2016 6:16 AM in response to Loner T
    Level 1 (8 points)
    Windows Software
    Aug 10, 2016 6:16 AM in response to Loner T

    i have the same problem

    Last login: Wed Aug 10 20:07:28 on console

    Jaap2009:~ Jaap2009$ sudo fdisk -e /dev/disk0

    Password:

    fdisk: could not open MBR file /usr/standalone/i386/boot0: No such file or directory

    Enter 'help' for information

    fdisk: 1> p

    Disk: /dev/disk0 geometry: 30515/255/63 [490234752 sectors]

    Offset: 0 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 -  379181240] HFS+       

    3: AB 1023 254  63 - 1023 254  63 [ 379590880 -    1269536] Darwin Boot

    4: 0C 1023 254  63 - 1023 254  63 [ 380860416 -  109373440] Win95 FAT32L

    fdisk: 1> setpid 4

             Starting       Ending

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

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

    4: 0C 1023 254  63 - 1023 254  63 [ 380860416 -  109373440] Win95 FAT32L

    Partition id ('0' to disable)  [0 - FF]: [C] (? for help) 7

    fdisk:*1> flag 4

    Partition 4 marked active.

    fdisk:*1> p

    Disk: /dev/disk0 geometry: 30515/255/63 [490234752 sectors]

    Offset: 0 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 -  379181240] HFS+       

    3: AB 1023 254  63 - 1023 254  63 [ 379590880 -    1269536] Darwin Boot

    *4: 07 1023 254  63 - 1023 254  63 [ 380860416 -  109373440] HPFS/QNX/AUX

    fdisk:*1> write

    fdisk: /dev/disk0: Operation not permitted

    Jaap2009:~ Jaap2009$

    i'm in OS X El Capitan ry to boot in Local Recovery but it doesn't work

  • by Loner T,

    Loner T Loner T Aug 10, 2016 7:13 AM in response to thanawatfromlamphun
    Level 7 (23,898 points)
    Safari
    Aug 10, 2016 7:13 AM in response to thanawatfromlamphun

    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

  • by thanawatfromlamphun,

    thanawatfromlamphun thanawatfromlamphun Aug 10, 2016 7:43 AM in response to Loner T
    Level 1 (8 points)
    Windows Software
    Aug 10, 2016 7:43 AM in response to Loner T

    You are not allowed to create or update this  i can't post it


    after creating new partition and restart i'm not found windows function

     

    diskutil list:

    /dev/disk0 (internal, physical):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *251.0 GB   disk0

       1:                        EFI EFI                     209.7 MB   disk0s1

       2:                  Apple_HFS Macintosh HD            194.1 GB   disk0s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

       4:       Microsoft Basic Data BOOTCAMP                56.0 GB    disk0s4

    diskutil CS list

         No CoreStorage logical volume groups found

    sudo gpt -vv -r show /dev/disk0

        

    gpt show: /dev/disk0: mediasize=251000193024; sectorsize=512; blocks=490234752

    gpt show: /dev/disk0: Suspicious MBR at sector 0

    gpt show: /dev/disk0: Pri GPT at sector 1

    gpt show: /dev/disk0: Sec GPT at sector 490234751

          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  379181240      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

      379590880    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      380860416  109373440      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

      490233856        863        

      490234719         32         Sec GPT table

      490234751          1         Sec GPT header

     

    sudo fdisk /dev/disk0

     

    Disk: /dev/disk0 geometry: 30515/255/63 [490234752 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 -  379181240] HFS+       

    3: AB 1023 254  63 - 1023 254  63 [ 379590880 -    1269536] Darwin Boot

    4: 0C 1023 254  63 - 1023 254  63 [ 380860416 -  109373440] Win95 FAT32L

     

    and i try to boot in Local Recovery but it doesn't work. i hold down command+R but its happened, i'm not command+Opt+R or Internet Recovery

    S__63717379.jpg

     

    i can't Local Recovery now

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