Windows 7 bootcamp partition not bootable after updating to 10.10.3

There is a debug menu in Disk Utility - http://www.macworld.com/article/2871803/unlocking-disk-utility-s-hidden-secrets. html . Can you enable it and check?

I tried this but apparently there's been a change in Disk Utility since the writing of the article. I couldn't get either the Images hack or the Debug thing to work and the checkbox the author tells you to check isn't there or is hidden.

Is there anything I can do with Disk Utility without it being in Debug mode?

I can do it on Mavericks, but do not have Yosemite/El Capitan handy. El Capitan also has System Integrity Protection (SIP) which you can disable and test.

Your BC/Windows installation on a 3TB disk, must start within the first 2TB disk addresses. The eDrive just pushed it out. Can you see files in the BC/Windows volume from OSX Finder?

I can see the Windows and the eDrive on my desktop in OSX. I can open up files in both. I do remember if this helps at all that before this happened I couldn't access OSX from Windows but I could the other way around.

I'm not sure what you want me to test in regards to the SIP.

Windows should be able to read OSX side. Since you now have two OSX installations, unless you check, I do not know which of the two you reading.

Based on your diskutil list, you can only read eDrive, but your Macintosh HDs (which are CoreStorage) should be unreadable.

I'm sorry but I'm lost.

How can I check since Windows doesn't boot to start with which of my OSXs are readable from it?

I can only restate that Macintosh HD, eDrive and Bootcamp are ALL accessible from OSX that boots by default. When I do a get info on Macintosh HD, it shows me the full 2.7 TB (3.0 - Windows 300 GB) on that drive.

Let us build a new Hybrid MBR and test. You will need GPT Fdisk (http://sourceforge.net/projects/gptfdisk/).

You have El Capitan, so we need to disable SIP first.

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 it is still disabled.

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: 3 4 5
7. Y (Good for GRUB question)
8. N (part 3 boot flag)
9. N (part 4 boot flag)
10. Y (part 5 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 #3 (MBR partition #2)

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 #3)

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

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

Creating entry for GPT partition #5 (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.

I wanted to pop in here and thank you for your help and to tell you I haven't forgotten about this.

I'm finishing up a project and I'm planning on carrying out this process this weekend when I have more time. I know the actual process won't take that long but the focus necessary to do it may be an issue right now.

I'm also glad I thought to use the notification email to go to the forum post you made and didn't work off the email. Either you added the SIP steps after your initial post or their software clipped it.

I'll check back in after I've had a go at it.

Jeff

Post back when you are ready.

Hey Loner T,

Started to do this just now. Restarted with Command-R, opened the terminal window, put in the csrutil disable command as specified. Typed csrutil status and was told it was enabled BUT to reboot to make changes take. Did that. Now, I get this:

Jeffs-iMac:~ jeff$ csrutil status

System Integrity Protection status: enabled (Custom Configuration).

Configuration:

Apple Internal: disabled

Kext Signing: disabled

Filesystem Protections: disabled

Debugging Restrictions: disabled

DTrace Restrictions: disabled

NVRAM Protections: disabled

This is an unsupported configuration, likely to break in the future and leave your machine in an unknown state.

Any suggestions? Doesn't make me feel warm and cozy for sure!

Jeff

This is normal and expected. This is needed to bypass SIP and allow Gdisk to be used to modify the GPT. It can be re-enabled once you complete the Gdisk steps, test and validate that everything is working the way you expect/want it to.

Hey Loner T,

Did this yesterday and it worked like a charm! Thanks so much for your help and patience here!

The only thing I'd like to change if I could is the ability to access the OSX filesystem inside Windows. It seems like it was messed up way back when I installed that stupid Tech Tool program and set up the eDrive. When I look in Windows under "Computer", all it shows is the drive Windows is on C: and the eDrive which is an OSX system as the D: drive.

Do you have any suggestions? I am far from a Windows admin-LOL!

Also, I'm assuming I should re-enable SIP now?

Jeff