update to Capitan corrupted bootcamp

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pranag Author

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update to Capitan corrupted bootcamp

Loner, (continuing from Re: Bootcamp gone haywire after Yosemite update)

I'm facing the same problem when I updated to OS X EI Capitan. Below is my setting

prashanths-MacBook-Pro:meanHelloWorld pranag$ sudo gdisk /dev/disk0

Password:

Sorry, try again.

Password:

GPT fdisk (gdisk) version 1.0.1

Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

NOTE: Write test failed with error number 1. It will be impossible to save

changes to this disk's partition table!

You may need to deactivate System Integrity Protection to use this program. See

https://www.quora.com/How-do-I-turn-off-the-rootless-in-OS-X-El-Capitan-10-11

for more information.

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/disk0: 976773168 sectors, 465.8 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): 0000136E-5E53-0000-413D-0000E64A0000

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 976773134

Partitions will be aligned on 8-sector boundaries

Total free space is 195508533 sectors (93.2 GiB)

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

1 40 409639 200.0 MiB EF00 EFI system partition

2 409640 291229631 138.7 GiB AF05 Macintosh HD

3 291229632 292499167 619.9 MiB AB00 Recovery HD

4 488007680 976773119 233.1 GiB 0700 BOOTCAMP

Command (? for help): d

Partition number (1-4): 4

Command (? for help): n

Partition number (4-128, default 4): 4

I ran the test Disk and it gives the below selections

Select a media (use Arrow keys, then press Enter):

Disk /dev/disk0 - 500 GB / 465 GiB (RO)

>Disk /dev/rdisk0 - 500 GB / 465 GiB (RO)

Disk /dev/rdisk1 - 148 GB / 138 GiB (RO)

I selected rdisk0

Below is what it shows

Write access for this media is not available.

TestDisk won't be able to modify it.

- No partition from this disk must be mounted:

Open the Disk Utility (In Finder -> Application -> Utility folder)

and press Unmount button for each volume from this disk

- This media may be physically write-protected, check the jumpers.

>[ Continue ] Continue even if write access isn't available

[ Quit ] Return to disk selection

What do I do?

MacBook Pro, iOS 9.1

Posted on Nov 29, 2015 9:06 AM

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Answer 1

pranag Author

Level 1

0 points

Nov 29, 2015 9:18 AM in response to pranag

I have also tried this

prashanths-MacBook-Pro:meanHelloWorld pranag$ diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage Macintosh HD 148.9 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data 250.2 GB disk0s4

/dev/disk1 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD +148.5 GB disk1

Logical Volume on disk0s2

5C26B20B-AC1B-42B4-BB4F-A5F881F132E7

Unencrypted

prashanths-MacBook-Pro:meanHelloWorld pranag$ 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

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Answer 2

Loner T

Level 9

59,513 points

Nov 29, 2015 9:49 AM in response to pranag

Please post the output of

diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

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Answer 3

pranag Author

Level 1

0 points

Nov 29, 2015 9:51 AM in response to Loner T

below is the output

prashanths-MacBook-Pro:meanHelloWorld pranag$ diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage Macintosh HD 148.9 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data 250.2 GB disk0s4

/dev/disk1 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD +148.5 GB disk1

Logical Volume on disk0s2

5C26B20B-AC1B-42B4-BB4F-A5F881F132E7

Unencrypted

prashanths-MacBook-Pro:meanHelloWorld pranag$ diskutil cs util

diskutil: did not recognize coreStorage verb "util"; type "diskutil coreStorage" for a list

prashanths-MacBook-Pro:meanHelloWorld pranag$ diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 8CB1DC8C-FB58-4887-A957-F4A666443FC5

=========================================================

Name: Macintosh HD

Status: Online

Size: 148899835904 B (148.9 GB)

Free Space: 18952192 B (19.0 MB)

|

+-< Physical Volume 6B5F3969-D630-43D2-BE8D-86C9B2715DB9

| ----------------------------------------------------

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 148899835904 B (148.9 GB)

|

+-> Logical Volume Family 6D6511EA-B730-4901-ABDA-A844EC730B20

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

Encryption Type: None

|

+-> Logical Volume 5C26B20B-AC1B-42B4-BB4F-A5F881F132E7

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

Disk: disk1

Status: Online

Size (Total): 148528562176 B (148.5 GB)

Revertible: Yes (no decryption required)

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

prashanths-MacBook-Pro:meanHelloWorld pranag$ sudo gpt -vv -r show /dev/disk0

Password:

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

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 976773167

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 290819992 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

291229632 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

292499168 195508512

488007680 488765440 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

976773120 15

976773135 32 Sec GPT table

976773167 1 Sec GPT header

prashanths-MacBook-Pro:meanHelloWorld pranag$ sudo fdisk /dev/disk0

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 - 409639] <Unknown ID>

2: AC 1023 254 63 - 1023 254 63 [ 409640 - 290819992] <Unknown ID>

3: AB 1023 254 63 - 1023 254 63 [ 291229632 - 1269536] Darwin Boot

4: 0C 1023 254 63 - 1023 254 63 [ 488007680 - 488765440] Win95 FAT32L

prashanths-MacBook-Pro:meanHelloWorld pranag$

Thanks

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Answer 4

Loner T

Level 9

59,513 points

Nov 29, 2015 9:56 AM in response to pranag

The large gap between GPT3 and GPT4 contains a lost NTFS header. Use Testdisk Quick Search to get the list of recoverable partitions.

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Answer 5

pranag Author

Level 1

0 points

Nov 29, 2015 10:07 AM in response to Loner T

it gives me the below output

Disk /dev/disk0 - 500 GB / 465 GiB - 976773168 sectors (RO)

The harddisk (500 GB / 465 GiB) seems too small! (< 850 GB / 792 GiB)

Check the harddisk size: HD jumpers settings, BIOS detection...

The following partitions can't be recovered:

Partition Start End Size in sectors

> MS Data 976773119 1661046775 684273657

Mac HFS 976773124 978042659 1269536

What do I do?

Thanks

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Answer 6

Loner T

Level 9

59,513 points

Nov 29, 2015 10:31 AM in response to pranag

These are unrecoverable partitions. Press Enter/Return to Continue. The next screen should give you list of recoverable partitions.

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Answer 7

pranag Author

Level 1

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Nov 29, 2015 10:36 AM in response to Loner T

How do I proceed?

Thanks

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Answer 8

Loner T

Level 9

59,513 points

Nov 29, 2015 10:40 AM in response to pranag

Use 'p' to list files in the MS Data entries and post a screen shot. You should see something similar to...

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Answer 9

pranag Author

Level 1

0 points

Nov 29, 2015 10:47 AM in response to Loner T

Thanks

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Answer 10

pranag Author

Level 1

0 points

Nov 29, 2015 11:08 AM in response to pranag

How do I go from here?

Do I use this command? do I have the correct numbers?

sudo gdisk /dev/disk0

p

d

4

n

4

292499456

684273657

0700

p

w

y

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Answer 11

pranag Author

Level 1

0 points

Nov 29, 2015 11:13 AM in response to Loner T

How do I go from here?

Do I use this command? do I have the correct numbers?

sudo gdisk /dev/disk0

p

d

4

n

4

292499456

684273657

0700

p

w

y

Reply

Answer 12

Loner T

Level 9

59,513 points

Nov 29, 2015 12:03 PM in response to pranag

pranag wrote:

How do I go from here?

Do I use this command? do I have the correct numbers?

sudo gdisk /dev/disk0

p

d

4

n

4

292499456

+684273657

0700

p

w

y

You need to use a "+" sign to indicate offset, not absolute end position. This will rebuild only the GPT. You will also need to rebuild the MBR once the GPT is corrected.

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 thesample 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.

Sudo gdisk /dev/rdisk0
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 13

pranag Author

Level 1

0 points

Nov 29, 2015 11:34 AM in response to Loner T

it says

Unable to open device '/dev/disk0' for writing! Errno is 1! Aborting write!

when I do

sudo gdisk /dev/disk0

p

d

4

n

4

292499456

+684273657

0700

p

w

y

what do I do?

I'm trying this which I got from one of your earlier posts

You have ELC System Integrity enabled.

1. Boot into Local Recovery.

2. In Utilities -> Terminal type

csrutil disable

3. Boot normally.

4. Execute Gdisk steps and test and verify.

5. Repeat Step 1 and type

csrutil enable

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Answer 14

pranag Author

Level 1

0 points

Nov 29, 2015 12:05 PM in response to Loner T

Thanks.. this got solved now...

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Answer 15

Loner T

Level 9

59,513 points

Nov 29, 2015 12:49 PM in response to pranag

Please back up OS X and Windows. Create a Windows System Restore point.

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