Bootcamp, windows 7 not booting

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Level 1

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Bootcamp, windows 7 not booting

HELP? plz

I can't get into my Win7 by booting my mac with option key pressed (Only Yosemite and Recovery 10.10.3 are available)

if I go into System Preferences>Startup Disk and restart onto BOOTCAMP(windows 7) it boots to a black screen stating something like: "NO BOOTABLE DRIVE"

Below is the output of Loner T's terminal troubleshooting

diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

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

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Arantes' Mac HD 400.0 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 99.2 GB disk0s4

No CoreStorage logical volume groups found

Disk: /dev/disk0 geometry: 60801/255/63 [976773168 sectors]

Signature: 0xAA55

Starting Ending

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

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

1: EE 1023 254 63 - 1023 254 63 [ 1 - 976773167] <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

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 781249984 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

781659624 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

782929160 760

782929920 193843200 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

976773120 15

976773135 32 Sec GPT table

976773167 1 Sec GPT header

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

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 90 aa 2e |........?.......|

00000020 00 00 00 00 80 00 80 00 ff cf 8d 0b 00 00 00 00 |................|

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 15 d7 6a 10 f8 6a 10 5e |..........j..j.^|

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

MacBook Pro, OS X Yosemite (10.10.3)

Posted on Jun 10, 2015 2:03 PM

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Answer 1

Loner T

Level 9

59,513 points

Jun 10, 2015 2:36 PM in response to arant

You seem to have a missing MBR. Please download GPT Fdisk - http://sourceforge.net/projects/gptfdisk/ and install it. Please post back when you are ready.

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Answer 2

arant Author

Level 1

0 points

Jun 10, 2015 7:54 PM in response to Loner T

done

PS: Sorry for pestering you at the other thread, I'm new to this Apple Support Forum and was non the wiser that you had replied already.

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Answer 3

Loner T

Level 9

59,513 points

Jun 10, 2015 8:07 PM in response to arant

No worries. The steps to rebuild MBR to match the new GPT information thus resetting the Hybrid MBR are as follows.

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 thesample Q&A after the steps. The commands are single character commands (and the text in parentheses is an explanation and/or guide on the command). In step 6 you need to type the list of numbers separated by a space.

Sudo gdisk /dev/disk0
P (Print list of parts)
R (Recover)
O (print current Hybrid MBR)
H (chooses Hybrid)
Partitions numbers to be hybridized: 2 3 4
Y (Good for GRUB question)
N (part 2 boot flag)
N (part 3 boot flag)
Y (part 4 boot flag make NTFS bootable partition)
O (print current Hybrid MBR)
W (Write the new MBR)
Y (Yes! write the new MBR)
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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Answer 4

arant Author

Level 1

0 points

Jun 10, 2015 8:36 PM in response to Loner T

Just realised how lame I was... I haven't been to step 12! It wasn't written. Ctr+C and redo steps

Rebooting... I'll post back as soon as it's done.

Thanks a lot!

Creating entry for GPT partition #2 (MBR partition #2)

Enter an MBR hex code (default AF):

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

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

Enter an MBR hex code (default AB):

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

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

Enter an MBR hex code (default 07):

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

Recovery/transformation command (? for help): o

Disk size is 976773168 sectors (465.8 GiB)

MBR disk identifier: 0x00003C50

MBR partitions:

Number Boot Start Sector End Sector Status Code

1 1 409639 primary 0xEE

2 409640 781659623 primary 0xAF

3 781659624 782929159 primary 0xAB

4 * 782929920 976773119 primary 0x07

Recovery/transformation command (? for help): w

Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING

PARTITIONS!!

Do you want to proceed? (Y/N): y

OK; writing new GUID partition table (GPT) to /dev/disk0.

Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

Warning: The kernel may continue to use old or deleted partitions.

You should reboot or remove the drive.

The operation has completed successfully.

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Answer 5

arant Author

Level 1

0 points

Jun 10, 2015 8:56 PM in response to Loner T

Thanks a lot!

I was greeted by dread win update, but it boots both win 7 & Yosemite.

Btw, do you happen to know if win10 (Released Version, when it became available) or El Capitan (Beta test not Dev version) might screw MBR?

just wondering...

PS: disregard my last post, I kind took a wrong turn but realised I could backtrack.

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Answer 6

Loner T

Level 9

59,513 points

Jun 10, 2015 9:01 PM in response to arant

I will add the note that a control-c or q before the w will let you start over. The MBR steps can be repeated as many times as necessary, as the MBR is derived from the GPT and the GPT is not changing during these steps.

W10 should not mess with the MBR anymore, but I would highly recommend backups of both OSes before you upgrade either.

I am not allowed to discuss upcoming OS X versions.

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Answer 7

Jun 10, 2015 10:11 PM in response to Loner T

I had the same issue as the thread creator. When i followed ur steps 'Windows' appeared when i booted up my mac holding option, but when i launched it it said "Missing operating system". How do I fix this.

Also none of the tests showed anything

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Answer 8

Loner T

Level 9

59,513 points

Jun 11, 2015 4:27 AM in response to David Delgado

David Delgado wrote:

I had the same issue as the thread creator.

Can you post the output of the following commands in a new discussion to avoid confusion for others?

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

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

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Answer 9

bjn1001

Level 1

0 points

Aug 8, 2015 5:01 AM in response to Loner T

Hi LonerT: I started a new thread here, where I have cobbled together as much of the information you suggest as I can. Can you help me with next steps? Thank you!

Bootcamp Partition Lost After Yosemite Upgrade

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