brianfromtandragee
Level 1 (8 points)
Windows Software

Q: Bootcamp panic

OK guys i have made a big **** up. Basically windows 7 on bootcamp was working fine. I then decided to shrink the bootcamp partition in windows disc management. And the space claim back i was going to use as the second windows simple or logical drive. I followed the wizzard and all my drives turned from blue primaries to light green logicals i think. I knew i was in trouble. Tryed to backstep but to no avail. Now nothing boots without using cmd r. I can see my main disc and the 4 disc partitions greyed out underneath it In disc util.nCan i restore this anyway without losing my mac data. Dont give a stuff about the windows particions. Please help totally scundered

Brian

MacBook Pro, OS X El Capitan (10.11.3)

Posted on Apr 19, 2016 1:12 PM

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brianfromtandragee

Q: Bootcamp panic

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  • by Loner T,

    Loner T Loner T Apr 20, 2016 12:05 PM in response to brianfromtandragee
    Level 7 (24,098 points)
    Safari
    Apr 20, 2016 12:05 PM in response to brianfromtandragee

    You do not have an extra partition. Please post the output of

     

    diskutil list

    sudo gpt -vv -r show /dev/disk0

     

    We should be able to fix the Bootcamp side. Please also install GPT Fdisk on the internal disk.

  • by brianfromtandragee,

    brianfromtandragee brianfromtandragee Apr 20, 2016 12:15 PM in response to Loner T
    Level 1 (8 points)
    Windows Software
    Apr 20, 2016 12:15 PM in response to Loner T

    gpt show: /dev/disk0: mediasize=500107862016; sectorsize=512; blocks=976773168

    gpt show: /dev/disk0: PMBR at sector 0

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

    gpt show: /dev/disk0: Sec GPT at sector 976773167

          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  584468960      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

      584878600    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      586148136       1752        

      586149888  390623232      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

      976773120         15        

      976773135         32         Sec GPT table

      976773167          1         Sec GPT header

  • by Loner T,

    Loner T Loner T Apr 20, 2016 12:54 PM in response to brianfromtandragee
    Level 7 (24,098 points)
    Safari
    Apr 20, 2016 12:54 PM in response to brianfromtandragee

    Please post the output of

     

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

     

    This will show us the first block of the NTFS header.

  • by brianfromtandragee,

    brianfromtandragee brianfromtandragee Apr 20, 2016 12:58 PM in response to Loner T
    Level 1 (8 points)
    Windows Software
    Apr 20, 2016 12:58 PM in response to Loner T
    00000000  eb 52 90 4e 54 46 53 20  20 20 20 00 02 08 00 00  |.R.NTFS.....|

    00000010  00 00 00 00 00 f8 00 00  3f 00 ff 00 00 f0 ef 22  |........?......"|

    00000020  00 00 00 00 80 00 80 00  ff 6f f5 0f 00 00 00 00  |.........o......|

    00000030  00 00 0c 00 00 00 00 00  02 00 00 00 00 00 00 00  |................|

    00000040  f6 00 00 00 01 00 00 00  9e 4e 37 82 8d 37 82 38  |.........N7..7.8|

    00000050  00 00 00 00 fa 33 c0 8e  d0 bc 00 7c fb 68 c0 07  |.....3.....|.h..|

    00000060  1f 1e 68 66 00 cb 88 16  0e 00 66 81 3e 03 00 4e  |..hf......f.>..N|

    00000070  54 46 53 75 15 b4 41 bb  aa 55 cd 13 72 0c 81 fb  |TFSu..A..U..r...|

    00000080  55 aa 75 06 f7 c1 01 00  75 03 e9 dd 00 1e 83 ec  |U.u.....u.......|

    00000090  18 68 1a 00 b4 48 8a 16  0e 00 8b f4 16 1f cd 13  |.h...H..........|

    000000a0  9f 83 c4 18 9e 58 1f 72  e1 3b 06 0b 00 75 db a3  |.....X.r.;...u..|

    000000b0  0f 00 c1 2e 0f 00 04 1e  5a 33 db b9 00 20 2b c8  |........Z3... +.|

    000000c0  66 ff 06 11 00 03 16 0f  00 8e c2 ff 06 16 00 e8  |f...............|

    000000d0  4b 00 2b c8 77 ef b8 00  bb cd 1a 66 23 c0 75 2d  |K.+.w......f#.u-|

    000000e0  66 81 fb 54 43 50 41 75  24 81 f9 02 01 72 1e 16  |f..TCPAu$....r..|

    000000f0  68 07 bb 16 68 70 0e 16  68 09 00 66 53 66 53 66  |h...hp..h..fSfSf|

    00000100  55 16 16 16 68 b8 01 66  61 0e 07 cd 1a 33 c0 bf  |U...h..fa....3..|

    00000110  28 10 b9 d8 0f fc f3 aa  e9 5f 01 90 90 66 60 1e  |(........_...f`.|

    00000120  06 66 a1 11 00 66 03 06  1c 00 1e 66 68 00 00 00  |.f...f.....fh...|

    00000130  00 66 50 06 53 68 01 00  68 10 00 b4 42 8a 16 0e  |.fP.Sh..h...B...|

    00000140  00 16 1f 8b f4 cd 13 66  59 5b 5a 66 59 66 59 1f  |.......fY[ZfYfY.|

    00000150  0f 82 16 00 66 ff 06 11  00 03 16 0f 00 8e c2 ff  |....f...........|

    00000160  0e 16 00 75 bc 07 1f 66  61 c3 a0 f8 01 e8 09 00  |...u...fa.......|

    00000170  a0 fb 01 e8 03 00 f4 eb  fd b4 01 8b f0 ac 3c 00  |..............<.|

    00000180  74 09 b4 0e bb 07 00 cd  10 eb f2 c3 0d 0a 41 20  |t.............A |

    00000190  64 69 73 6b 20 72 65 61  64 20 65 72 72 6f 72 20  |disk read error |

    000001a0  6f 63 63 75 72 72 65 64  00 0d 0a 42 4f 4f 54 4d  |occurred...BOOTM|

    000001b0  47 52 20 69 73 20 6d 69  73 73 69 6e 67 00 0d 0a  |GR is missing...|

    000001c0  42 4f 4f 54 4d 47 52 20  69 73 20 63 6f 6d 70 72  |BOOTMGR is compr|

    000001d0  65 73 73 65 64 00 0d 0a  50 72 65 73 73 20 43 74  |essed...Press Ct|

    000001e0  72 6c 2b 41 6c 74 2b 44  65 6c 20 74 6f 20 72 65  |rl+Alt+Del to re|

    000001f0  73 74 61 72 74 0d 0a 00  8c a9 be d6 00 00 55 aa  |start.........U.|

    00000200

  • by Loner T,

    Loner T Loner T Apr 20, 2016 2:02 PM in response to brianfromtandragee
    Level 7 (24,098 points)
    Safari
    Apr 20, 2016 2:02 PM in response to brianfromtandragee

    Can you use Re: Unable to boot into mac or bootcamp as a reference and recreate the Hybrid MBR and test Windows?

  • by brianfromtandragee,

    brianfromtandragee brianfromtandragee Apr 20, 2016 2:07 PM in response to Loner T
    Level 1 (8 points)
    Windows Software
    Apr 20, 2016 2:07 PM in response to Loner T

    honestly not comfortable as its over my head, not fussed on dual boot is it easy to just go back to mac only boot.

    if you can step me through it like before I will give it a go, but I fully understand if you have not got the time

  • by Loner T,

    Loner T Loner T Apr 20, 2016 2:22 PM in response to brianfromtandragee
    Level 7 (24,098 points)
    Safari
    Apr 20, 2016 2:22 PM in response to brianfromtandragee

    My recommendation is to try and resurrect Windows. If it works, it will save you time, but if it does not, it can be removed very easily.

  • by brianfromtandragee,

    brianfromtandragee brianfromtandragee Apr 20, 2016 2:25 PM in response to Loner T
    Level 1 (8 points)
    Windows Software
    Apr 20, 2016 2:25 PM in response to Loner T

    would rather just delete the windows partition my plans are to use a dedicated windows laptop. i have no critical data on the windows partition

  • by Loner T,

    Loner T Loner T Apr 20, 2016 2:35 PM in response to brianfromtandragee
    Level 7 (24,098 points)
    Safari
    Apr 20, 2016 2:35 PM in response to brianfromtandragee

    The steps that I have listed will make the disk space in Windows go back to OSX when deleted. If we do not execute the steps, it will leave all the Windows free space without merging it.

     

    Once you execute the steps, you can use Boot Camp: Remove Windows from your Mac to coalesce the Windows space back into OSX.

  • by brianfromtandragee,

    brianfromtandragee brianfromtandragee Apr 20, 2016 2:38 PM in response to Loner T
    Level 1 (8 points)
    Windows Software
    Apr 20, 2016 2:38 PM in response to Loner T

    Feel like stepping me through it then?

  • by Loner T,

    Loner T Loner T Apr 20, 2016 3:14 PM in response to brianfromtandragee
    Level 7 (24,098 points)
    Safari
    Apr 20, 2016 3:14 PM in response to brianfromtandragee

    Do you have GPT Fdisk installed on your internal disk? If not, you can download and install it from https://sourceforge.net/projects/gptfdisk/ .

  • by brianfromtandragee,

    brianfromtandragee brianfromtandragee Apr 20, 2016 3:16 PM in response to Loner T
    Level 1 (8 points)
    Windows Software
    Apr 20, 2016 3:16 PM in response to Loner T

    yes installed ok

  • by Loner T,

    Loner T Loner T Apr 20, 2016 3:19 PM in response to brianfromtandragee
    Level 7 (24,098 points)
    Safari
    Apr 20, 2016 3:19 PM in response to brianfromtandragee

    1. Boot into Local Recovery (Command+R).

    2. Start Utilities -> Terminal.

    3. Type csrutil disable in Terminal and press Enter/Return.

    4. Type csrutil status.

    5. Boot normally, and type csrutil status to confirm that all individual entries are still disabled.

  • by brianfromtandragee,

    brianfromtandragee brianfromtandragee Apr 20, 2016 3:32 PM in response to Loner T
    Level 1 (8 points)
    Windows Software
    Apr 20, 2016 3:32 PM in response to Loner T

    AFter normal boot still disabled

  • by Loner T,

    Loner T Loner T Apr 20, 2016 3:34 PM in response to brianfromtandragee
    Level 7 (24,098 points)
    Safari
    Apr 20, 2016 3:34 PM in response to brianfromtandragee

    We can do this as slowly as you want, but I will paste the commands here. One suggestion is to have this in a window beside the Terminal window, so you can look at the sequence.

     

    Rebuild MBR to match the new GPT information thus resetting the Hybrid MBR. Use defaults for other questions (like partition codes). The only values that need modifications are the Boot flags and step 10. Accept all other defaults that Gdisk offers. Please see the sample Q&A as an example. These steps can be repeated if you make a mistake before you get to Step 12, otherwise start from Step 1 for these steps. Step 6 has numbers which are typed with a space between the numbers. Please see the sample Q&A before you execute these steps.

    1. Sudo gdisk /dev/rdisk0
    2. P  (Print list of parts)
    3. R  (Recover)
    4. O (print current Hybrid MBR)
    5. H (chooses Hybrid)
    6. Partitions numbers to be hybridized: 2 3 4
    7. Y  (Good for GRUB question)
    8. N  (part 2 boot flag)
    9. N  (part 3 boot flag)
    10. Y  (part 4 boot flag make NTFS bootable partition)
    11. O  (print current Hybrid MBR)
    12. W (Write the new MBR)
    13. Y (Yes! write the new MBR)
    14. Reboot

     

    Here is sample Q&A for this section. Please notice the Press Enter/Return.

     

    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): Press Enter/Return

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

     

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

    Enter an MBR hex code (default AB): Press Enter/Return

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

     

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

    Enter an MBR hex code (default 07): Press Enter/Return

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

     

    Test 1 - Does Bootcamp Volume show up in Finder?

    Test 2 - Can you see files in Bootcamp Volume?

    Test 3 - Can you select Bootcamp in System Preferences -> Startup Disk?

    Test 4 - If Test 3 is successful, select Bootcamp and Click Restart.

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