bootcamp disk0s4 after update to mavericks

Excellent work to get to this point. Were any of your partitions resized after Windows was already in place?

Your table (and my cheat sheet) looks as following

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.

Rebuild using start/end offsets from Testdisk DeepSearch using GPT Fdisk (http://sourceforge.net/projects/gptfdisk/)

1. Sudo gdisk /dev/rdisk0
2. P (print the full list of parts)
3. D (delete)
4. 4 (part 4)
5. N (new part)
6. 4 (part 4)
7. 323946496 - Start offset in bytes (start point for Bootcamp part)
8. +166287353(Size offset as opposed to End offset)
9. 0700 (Windows part type)
10. P (print list of all parts just to see what changes will be made)
11. W (Write the new GPT)
12. 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

1. Sudo gdisk /dev/disk0
2. P (Print list of parts)
3. R (Recover)
4. H (chooses Hybrid)
5. Partitions numbers to be hybridized: 2 3 4
6. Y (Good for GRUB question)
7. N (part 2 flag)
8. N (part 3 flag)
9. Y (part 4 flag make bootable partition)
10. W (Write the new MBR)
11. Y (Yes! write the new MBR)
12. Reboot

Test 1 - Does Bootcamp Volume show up in Finder?

Test 2 - Can you see your 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.

Please backup OSX and Windows as a baseline backup, if you need to restore it in the future.

I have same issue, my Windows has disappeared, this is from the El Capitan update. If this solution works for this issue will it delete my window files?

Also if this is any help It shows that there's 233GB on the bootcamp partition.

No, but you should post the output of the current state using the following commands.

diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

The "sudo" commands will prompt for your password, and it will not be echoed back. You may also see a warning about improper use of "sudo" and potential data loss due to "abuse" of the command.

Okay, how's this?

The gap between GPT3 and GPT4 indicates a missing/lost NTFS header.

Please download

Testdisk - http://www.cgsecurity.org/wiki/TestDisk_Download

GPT Fdisk - http://sourceforge.net/projects/gptfdisk/

Please use Testdisk to start a scan of /dev/rdisk0 using EFI/GPT - http://imgur.com/a/PjmnK . You want to run a Quick Search first.

Okay which do I select now?

This is a list of unrecoverable partitions. Press Enter/Return to Continue and you should see a list of recoverable partitions. Please post a screen shot.

This came up

Your most likely partition candidate is the second MS Data entry.

Can you use 'p' to list files in this partition? Your output should look similar to the following to be a valid partition.

Okay this is what I got

Install GPT Fdisk (aka gdisk). Leave your Testdisk display and start a new Terminal Window. 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. Please notice the'+' sign in step 8 (this is called offset notation). The text in parentheses is for informational purpose to describe the action being taken. Gdisk has one-character commands except when entering numbers.

Rebuild GPT4 using start/end offsets

1. Sudo gdisk /dev/rdisk0
2. P (print the full list of parts)
3. D (delete)
4. 4 (part 4)
5. N (new part)
6. 4 (part 4)
7. 1168347136 ( - Start offset in sectors or the start point for Bootcamp part)
8. +785176569 ( - Size offset, as opposed to End offset)
9. 0700 (Windows part type)
10. P (print list of all parts just to see what changes will be made)
11. W (Write the new GPT)
12. 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). 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.

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.

Thank you so much! I'm going to try booting windows but as of now all my files are there and I can see bootcamp in finder! 😀