xTyD23x

Q: BOOTCAMP partition boot problems

Hi, I have seen a few posts that are very similar to mine, but I cannot seem to get to the bottom of this issue. Here is the background on what happened:

 

I was running El Capitan on a single OS X partition and decided to run Boot Camp Assistant and install Windows 10 on a new partition. This worked perfectly and I was using Windows and booting back and forth. I then decided that I would like to create a new partition to easily share files between the 2 OS's using a Fat-32 file system so that both OS's could have read/write access. I did this with Disk Utility on the Mac side and everything seemed to go smoothly. Also, I did not touch my BOOTCAMP partition, but took all the space for the new partition from the Mac side. Everything seemed fine.....until I tried to boot back into BOOTCAMP. Now this partition is not recognized as bootable, though it is accessible from within the Mac side and everything seems in tact.

 

I ran the diskutil list command and here is the output:

 

/dev/disk0 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *500.3 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:                  Apple_HFS Macintosh HD            361.5 GB   disk0s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

   4:                  Apple_HFS SHARED                  22.7 GB    disk0s4

   5:       Microsoft Basic Data BOOTCAMP                115.0 GB   disk0s5

Tylers-MacBook-Pro-3:~ tylerdouglas$ diskutil info disk0s5

   Device Identifier:        disk0s5

   Device Node:              /dev/disk0s5

   Whole:                    No

   Part of Whole:            disk0

   Device / Media Name:      BOOTCAMP

 

   Volume Name:              BOOTCAMP

 

   Mounted:                  Yes

   Mount Point:              /Volumes/BOOTCAMP

 

   File System Personality:  NTFS

   Type (Bundle):            ntfs

   Name (User Visible):      Windows NT File System (NTFS)

 

   Partition Type:           Microsoft Basic Data

   OS Can Be Installed:      No

   Media Type:               Generic

   Protocol:                 SATA

   SMART Status:             Verified

   Volume UUID:              1EF1A5FC-BEBE-4528-A0A2-6755D96E1AB0

   Disk / Partition UUID:    0F83EFE3-3E4B-4EAA-8C08-0590F3C60EAA

 

   Total Size:               115.0 GB (114999427072 Bytes) (exactly 224608256 512-Byte-Units)

   Volume Free Space:        72.5 GB (72523272192 Bytes) (exactly 141647016 512-Byte-Units)

   Device Block Size:        512 Bytes

   Allocation Block Size:    4096 Bytes

 

   Read-Only Media:          No

   Read-Only Volume:         Yes

 

   Device Location:          Internal

   Removable Media:          No

 

   Solid State:              Yes



My theory was that because the BOOTCAMP partition moved from 4 to 5, this somehow confused things. I decided that I didn't care any more about having the shared partition, so I erased it. I then tried to delete this partition, but I am unable to do this using Disk Utility in regular or recovery mode. I have tried unmounting and then deleting in both modes. I have scoured the the internet looking for a solution and I am completely stuck. This seems like it should be a super simple fix, but it's frustrating that I can't figure it out. I don't think I have damaged or corrupted anything and I just need to be able to boot into Bootcamp.


PLEASE HELP!!!


Thanks in advance!

MacBook Pro (Retina, Mid 2012), OS X El Capitan (10.11.3)

Posted on Mar 15, 2016 9:26 PM

Close

Q: BOOTCAMP partition boot problems

  • All replies
  • Helpful answers

Previous Page 2 of 6 last Next
  • by xTyD23x,

    xTyD23x xTyD23x Apr 14, 2016 5:59 PM in response to Loner T
    Level 1 (4 points)
    Apr 14, 2016 5:59 PM in response to Loner T

    I can't boot normally in OS X....that's my problem. I can boot in BootCamp now only. Originally I couldn't boot into BootCamp, but could boot into Mac. Now I can boot into Mac recovery and BootCamp

  • by Loner T,

    Loner T Loner T Apr 14, 2016 6:26 PM in response to xTyD23x
    Level 7 (24,202 points)
    Safari
    Apr 14, 2016 6:26 PM in response to xTyD23x

    Does the Alt/Option key work during power up of the Mac? If it takes to you Windows, can you run the following two procedures and try the Alt/Option key method again.

     

    Reset the System Management Controller (SMC) on your Mac - Apple Support

    How to Reset NVRAM on your Mac - Apple Support

  • by xTyD23x,

    xTyD23x xTyD23x Apr 14, 2016 9:03 PM in response to Loner T
    Level 1 (4 points)
    Apr 14, 2016 9:03 PM in response to Loner T

    I followed the instructions on both of these and the problem persists

  • by Loner T,

    Loner T Loner T Apr 14, 2016 9:09 PM in response to xTyD23x
    Level 7 (24,202 points)
    Safari
    Apr 14, 2016 9:09 PM in response to xTyD23x

    Since the OS X no longer boots, can you use How to install OS X on an external drive connected to your Mac - Apple Support to install OS X on an external disk and upgrade it till it matches the version on your internal disk and boot from it. Install GPT Fdisk an die will delete the MBR and check if the internal disk will boot OS X. If it does, recreate the MBR, but this time copy the contents of the Terminal window, before reboot.

  • by xTyD23x,

    xTyD23x xTyD23x Apr 14, 2016 10:02 PM in response to Loner T
    Level 1 (4 points)
    Apr 14, 2016 10:02 PM in response to Loner T

    This is going to be a process. I have an external drive, but it is not formatted for Mac and it has a bunch of stuff on it. I tried a flash drive, but the largest I have is 8GB and the free space on it is actually only 7.8GB, so that won't work. Is there no way to do this from recovery? I can successfully boot into recovery.

  • by Loner T,

    Loner T Loner T Apr 15, 2016 5:35 AM in response to xTyD23x
    Level 7 (24,202 points)
    Safari
    Apr 15, 2016 5:35 AM in response to xTyD23x

    You will not be able to install GPT Fdisk in the Recovery console. Gdisk is much better than using a combination of GPT and Fdisk commands and these have some limitations. A 16 GB USB will work. USB Flash drives are usually slow.

     

    Your current external disk can be converted to GPT, but it, again, requires a working OS X installation. Do you have another Mac? Two Macs can access each other's hard disks, using Target Disk Mode - Share files between two computers with target disk mode - Apple Support .

  • by xTyD23x,

    xTyD23x xTyD23x Apr 16, 2016 12:19 PM in response to Loner T
    Level 1 (4 points)
    Apr 16, 2016 12:19 PM in response to Loner T

    I loaded EL Capitan on a 32GB USB 3.0 flash drive. I did this using a friend's MacBook Pro. For some reason, when I use their MacBook, I can boot into the flash drive, but on my computer it doesn't show up when I hold the option button at startup. I have a MacMini that I could try the other option with, but I will have to go buy the necessary cables to connect.

  • by Loner T,

    Loner T Loner T Apr 16, 2016 12:44 PM in response to xTyD23x
    Level 7 (24,202 points)
    Safari
    Apr 16, 2016 12:44 PM in response to xTyD23x

    Your 2012 Retina (assuming 15-in) has

     

     

    Connections and Expansion

    Ports on the MacBook Pro with Retina display

    • MagSafe 2 power port
    • Two Thunderbolt ports (up to 10 Gbps)
    • Two USB 3 ports (up to 5 Gbps)
    • HDMI port
    • Headphone port
    • SDXC card slot
    • Apple Thunderbolt to Gigabit Ethernet Adapter (sold separately)
    • Apple Thunderbolt to FireWire Adapter (sold separately, available July)

     

    as noted in MacBook Pro (Retina, 15-inch, Mid 2012) - Technical Specifications  .

     

    A USB3 Flash drive should work. Please run SMC/NVRAM Reset and try again.

  • by xTyD23x,

    xTyD23x xTyD23x Apr 16, 2016 1:15 PM in response to Loner T
    Level 1 (4 points)
    Apr 16, 2016 1:15 PM in response to Loner T

    I ran both of these and tried again, but I still don't get the option to boot from the flash drive. You are correct with the model.

  • by Loner T,

    Loner T Loner T Apr 16, 2016 1:27 PM in response to xTyD23x
    Level 7 (24,202 points)
    Safari
    Apr 16, 2016 1:27 PM in response to xTyD23x

    Some flash drives are fussy about booting. Can you find a USB2 16GB. It should be cheaper than cables for Target Disk Mode, even though TDM will be very handy in the future to diagnose problems.

     

    What year is your Mini?

  • by xTyD23x,

    xTyD23x xTyD23x Apr 16, 2016 1:31 PM in response to Loner T
    Level 1 (4 points)
    Apr 16, 2016 1:31 PM in response to Loner T

    My Mini is Mid 2011. I'm thinking about just backing up my 3TB MyBook and using that instead. When I did boot into the USB it was super slow, like you said. Obviously I just need to run a few terminal commands, but still...

  • by xTyD23x,

    xTyD23x xTyD23x Apr 17, 2016 10:36 PM in response to Loner T
    Level 1 (4 points)
    Apr 17, 2016 10:36 PM in response to Loner T

    So I was able to boot with a 2.0 flash drive with the same setup as before. I am at the point where I am entering the commands, but I'm unsure how to proceed. I am following your example from the other post, but I'm not sure how to order the partitions. I don't care about losing the 21.2 GB partition. I just want to make sure that I can boot into Mac or Windows BootCamp. Can you please tell me how to proceed?

     

    Here is the output from where I am currently at:

     

     

    Last login: Sun Apr 17 21:52:43 on console

    Tylers-Mac-mini:~ FlashOS$ csrutil status

    System Integrity Protection status: disabled.

    Tylers-Mac-mini:~ FlashOS$ Sudo gdisk /dev/rdisk0

     

     

    WARNING: Improper use of the sudo command could lead to data loss

    or the deletion of important system files. Please double-check your

    typing when using sudo. Type "man sudo" for more information.

     

     

    To proceed, enter your password, or type Ctrl-C to abort.

     

     

    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): 000065EB-5054-0000-D809-0000FE140000

    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 262281 sectors (128.1 MiB)

     

     

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

       1              40          409639   200.0 MiB   EF00  EFI system partition

       2          409640       706541775   336.7 GiB   AF00  Customer

       3       706541776       707811311   619.9 MiB   AB00  Recovery HD

       4       707811312       752234495   21.2 GiB    AF00  Apple_HFS_Untitled_2

       5       752496640       977104895   107.1 GiB   0700  BOOTCAMP

     

     

    Command (? for help): R

     

     

    Recovery/transformation command (? for help): O

     

     

    Disk size is 977105060 sectors (465.9 GiB)

    MBR disk identifier: 0x01B0FF30

    MBR partitions:

     

     

    Number  Boot  Start Sector   End Sector   Status      Code

       1                     1    706541775   primary     0xEE

       2             706541776    707811311   primary     0xAB

       3             707811312    752234495   primary     0xAF

       4      *      752496640    977104895   primary     0x07

     

     

    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:

     

     

     

     

     

     

    Thanks for your help!!

  • by xTyD23x,

    xTyD23x xTyD23x Apr 17, 2016 10:45 PM in response to xTyD23x
    Level 1 (4 points)
    Apr 17, 2016 10:45 PM in response to xTyD23x

    So I was just re-reading your instructions from before and I may have already made a mistake!

     

    So as soon as I installed GPT fdisk, should I have rebooted and tried to boot into my original Mac OS (internal)? What I did was install the program to the OS living on my flash drive, then I followed your instructions from the other post in the OS on the flash drive. I booted into the recovery partition of the flash drive and disabled SIP, then booted back into the main partition on the flash drive again, and proceeded with your instructions. Now I am thinking you meant to install the program and then immediately check if I could boot back into my internal Mac OS, then run these commands inside of that.

     

    I currently just am leaving my computer alone with the terminal window open exactly as it looks in the post above.

     

    Sorry if I messed this up again! Thanks for your help....and patience!

  • by Loner T,

    Loner T Loner T Apr 18, 2016 6:36 AM in response to xTyD23x
    Level 7 (24,202 points)
    Safari
    Apr 18, 2016 6:36 AM in response to xTyD23x

    No, you did not mess up. Enter the number 3 4 5 and continue. 

  • by xTyD23x,

    xTyD23x xTyD23x Apr 18, 2016 7:26 AM in response to Loner T
    Level 1 (4 points)
    Apr 18, 2016 7:26 AM in response to Loner T

    Okay, I ran the rest of the commands in the instructions exactly as they are written and I am having the same issue when trying to boot into Mac.

Previous Page 2 of 6 last Next