Q: Can't find Bootcamp partition after installing Yosemite

Do not use left/right arrow/cursor keys. Scroll up/down to each MS Data entry and use 'P' to list files.

This is what it should look like.

The triplet you have is a start/end/size triplet. You need to fill it where Start and Size are specified below. If you see any error messages, please stop and post back.

You need to use the following steps. If you see any error messages during the following steps, please stop and post back here with the error message. The following steps have values from your Testdisk output (and you can verify) in Steps 7 and 8.

Rebuild GPT4 using start/end offsets

Sudo gdisk /dev/rdisk0

P  (print the full list of parts)

D  (delete)

4  (part 4)

N  (new part)

4   (part 4)

Start offset in bytes  (start point for Bootcamp part)

+Size (Size offset as opposed to End offset)

0700     (Windows part type)

P           (print list of all parts just to see what changes will be made)

W         (Write the new GPT)

Y           (Yes! really write the new GPT)

  This will delete and re-write the GPT partition info for /dev/disk0s4.

Rebuild MBR to match the new GPT information thus resetting the Hybrid MBR. Use defaults for other questions (like partition codes).

Sudo gdisk /dev/disk0

P  (Print list of parts)

R   (Recover)

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)

W  (Write the new MBR)

Y    (Yes! write the new MBR)

Reboot

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

If you see a hanging underline cursor at the top left on a black screen, and it does not proceed further, you may need Windows Startup Repair or a tool called EasyBCD.

Leave the Testdisk window as is.  Start a new terminal window for Gdisk commands.

Did you install Gdisk? From Terminal try

what gdisk

Search for GPT Fdisk on sourceforge.net. Download it and install it.

http://sourceforge.net/projects/gptfdisk/

Your 'd' command did not work. It does not look correct.

marielordorica wrote:

 

I don't understand the start and size part i think i didn't do it correctly.

 

 

 

Last login: Sun Jan  4 13:51:48 on ttys002

MacBook-Pro-de-Mariel-Ordorica:~ marielordorica$ gdisk

GPT fdisk (gdisk) version 0.8.10

 

Type device filename, or press <Enter> to exit: 

MacBook-Pro-de-Mariel-Ordorica:~ marielordorica$ what gdisk

gdisk: No such file or directory

MacBook-Pro-de-Mariel-Ordorica:~ marielordorica$ Sudo gdisk /dev/rdisk0

Password:

GPT fdisk (gdisk) version 0.8.10

 

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: 1465149168 sectors, 698.6 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): 00001E09-3131-0000-3E6A-0000FC0E0000

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 1465149134

Partitions will be aligned on 8-sector boundaries

Total free space is 1749 sectors (874.5 KiB)

 

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

   1              40          409639   200.0 MiB   EF00  EFI system partition

   2          409640      1066008799   508.1 GiB   AF05  Macintosh HD

   3      1066008800      1067278335   619.9 MiB   AB00  Recovery HD

   4      1067278336      1465147391   189.7 GiB   0700  Untitled

 

Command (? for help): d

b back up GPT data to a file

c change a partition's name

d delete a partition

i show detailed information on a partition

l list known partition types

n add a new partition

o create a new empty GUID partition table (GPT)

p print the partition table

q quit without saving changes

r recovery and transformation options (experts only)

s sort partitions

t change a partition's type code

v verify disk

w write table to disk and exit

x extra functionality (experts only)

? print this menu

 

Command (? for help): 4

b back up GPT data to a file

c change a partition's name

d delete a partition

i show detailed information on a partition

l list known partition types

n add a new partition

o create a new empty GUID partition table (GPT)

p print the partition table

q quit without saving changes

r recovery and transformation options (experts only)

s sort partitions

t change a partition's type code

v verify disk

w write table to disk and exit

x extra functionality (experts only)

? print this menu

 

Command (? for help): n

Partition number (5-128, default 5): 4

Value out of range

Partition number (5-128, default 5):

  [Restored]

Last login: Tue Jan  6 23:41:46 on console

MacBook-Pro-de-Mariel-Ordorica:~ marielordorica$ Sudo gdisk /dev/rdisk0

Password:

GPT fdisk (gdisk) version 0.8.10

 

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: 1465149168 sectors, 698.6 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): 00001E09-3131-0000-3E6A-0000FC0E0000

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 1465149134

Partitions will be aligned on 8-sector boundaries

Total free space is 1749 sectors (874.5 KiB)

 

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

   1              40          409639   200.0 MiB   EF00  EFI system partition

   2          409640      1066008799   508.1 GiB   AF05  Macintosh HD

   3      1066008800      1067278335   619.9 MiB   AB00  Recovery HD

   4      1067278336      1465147391   189.7 GiB   0700  Untitled

 

Command (? for help): d

Partition number (1-4): 4

 

Command (? for help): n

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

First sector (34-1465149134, default = 1067278336) or {+-}size{KMGTP}: start

First sector (34-1465149134, default = 1067278336) or {+-}size{KMGTP}: +size

First sector (34-1465149134, default = 1067278336) or {+-}size{KMGTP}: 0700

First sector (34-1465149134, default = 1067278336) or {+-}size{KMGTP}: p

First sector (34-1465149134, default = 1067278336) or {+-}size{KMGTP}:

It should be

Rebuild GPT4 using start/end offsets

 

Sudo gdisk /dev/rdisk0

P  (print the full list of parts)

D  (delete)

4  (part 4)

N  (new part)

4   (part 4)

1067220992 (start point for Bootcamp part)

+397924352 (Size offset as opposed to End offset)

0700     (Windows part type)

P           (print list of all parts just to see what changes will be made)

W         (Write the new GPT)

Y           (Yes! really write the new GPT)

  This will delete and re-write the GPT partition info for /dev/disk0s4.

Your NTFS partition is partially sitting in your Mac Recovery HD. Notice the negative sector offset in the following table.

This means Gdisk will not let you use the start number you found because it will create an overlapping partition with GPT 3 (Recovery HD).

You will need also need to delete GPT 3 (d,3), the same way you have deleted GPT 4 (d, 4), first, before you can use this to rebuild the Hybrid MBR. Your Hybrid MBR will only have two entries GPT 2 and GPT 3.

To get Recovery HD back, you will need to re-install OSX after you recover your Windows installation. I suggest you make a backup of your Windows and OSX installation after the disk steps.

The new steps will be

Rebuild GPT 3 and 4 using start/end offsets

 

Sudo gdisk /dev/rdisk0

P  (print the full list of parts)

D  (delete)

4  (part 4)

D (delete)

3 (part 3 - Recovery HD)

N  (new part)

3   (part 3 - there is no Recovery HD anymore)

1067220992 (start point for Bootcamp part)

+397924352 (Size offset as opposed to End offset)

0700     (Windows part type)

P           (print list of all parts just to see what changes will be made)

W         (Write the new GPT)

Y           (Yes! really write the new GPT)

  This will delete and re-write the GPT partition info for /dev/disk0s3.