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Bootcamp install not working after update

I have a 2015 MacbookPro 15inc with Windows 8.1 installed under bootcamp. I had an update mess up bootcamp earlier in the year, but was able to fix it using command prompt. However since updating 2 days ago bootcamp has stopped again and anything I do does not work.

When I boot with option key I see a mac and windows option, when I follow the windows I get an immediate blue screen with error 0xc00000e. I have tried various diskpart and bcd commands with no success, in-fact now I have two options for windows on boot, neither of which work.

I have looked at some of the other inputs in the forum and have posted the requested info from command below:

Last login: Wed Apr 15 10:32:44 on ttys000

pc-fourroux4:~ Walker$ diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.3 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage 249.3 GB disk0s2

3: Apple_Boot Recovery HD 650.1 MB disk0s3

4: Microsoft Basic Data 249.8 GB disk0s4

5: DE94BBA4-06D1-4D40-A16A-BFD50179D6AC 314.6 MB disk0s5

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD *249.0 GB disk1

Logical Volume on disk0s2

C49EDEF2-2D01-41F7-8C4B-D57E18FF9FFC

Unlocked Encrypted

/dev/disk2

#: TYPE NAME SIZE IDENTIFIER

0: FDisk_partition_scheme *4.0 GB disk2

1: DOS_FAT_32 NO NAME 4.0 GB disk2s1

pc-fourroux4:~ Walker$ diskutil cs list

CoreStorage logical volume groups (1 found)

+-- Logical Volume Group F65A76BB-CA47-4BA5-9D21-10FF87833E20

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

Name: Macintosh HD

Status: Online

Size: 249318658048 B (249.3 GB)

Free Space: 53248 B (53.2 KB)

+-< Physical Volume 606BE5DA-7096-4361-9E50-B5F36899B8B1

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 249318658048 B (249.3 GB)

+-> Logical Volume Family 1981166F-9D27-434C-9368-A8A69A708910

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

Encryption Status: Unlocked

Encryption Type: AES-XTS

Conversion Status: Complete

Conversion Direction: -none-

Has Encrypted Extents: Yes

Fully Secure: Yes

Passphrase Required: Yes

+-> Logical Volume C49EDEF2-2D01-41F7-8C4B-D57E18FF9FFC

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

Disk: disk1

Status: Online

Size (Total): 248980963328 B (249.0 GB)

Conversion Progress: -none-

Revertible: Yes (unlock and decryption required)

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

pc-fourroux4:~ Walker$ sudo gpt -vv -r show /dev/disk0

Password:

gpt show: /dev/disk0: mediasize=500277790720; sectorsize=512; blocks=977105060

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 977105059

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 486950504 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

487360144 1269760 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

488629904 368

488630272 487860224 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

976490496 614400 5 GPT part - DE94BBA4-06D1-4D40-A16A-BFD50179D6AC

977104896 131

977105027 32 Sec GPT table

977105059 1 Sec GPT header

pc-fourroux4:~ Walker$ sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 60821/255/63 [977105060 sectors]

Signature: 0xAA55

Starting Ending

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

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

1: EE 0 0 2 - 25 127 14 [ 1 - 409639] <Unknown ID>

2: AC 25 127 15 - 1023 254 63 [ 409640 - 486950504] <Unknown ID>

3: AB 1023 254 63 - 1023 254 63 [ 487360144 - 1269760] Darwin Boot

*4: 0C 1023 254 63 - 1023 254 63 [ 488630272 - 487860224] Win95 FAT32L

pc-fourroux4:~ Walker$

Any help appreciated!!!

Andrew

MacBook Pro with Retina display, Windows 8

Posted on Apr 15, 2015 8:54 AM

81 replies

walkies_a Author

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Apr 16, 2015 11:08 AM in response to Loner T

I Tried and got the error below that it cannot recognize the path

Loner T

Level 9

59,477 points

Apr 16, 2015 11:13 AM in response to walkies_a

Apart from C:, do you have either an X: or D: (or any other drive letter)? If C: is your USB EFI Boot, it will not have the BCD store that you want to repair.

If this command is available, try the following command.

wmic logicaldisk get deviceid, volumename, description

walkies_a Author

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Apr 16, 2015 11:31 AM in response to walkies_a

AAs you can see from dir command c has windows install. The second screenshot is from your command.

Loner T

Level 9

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Apr 16, 2015 1:21 PM in response to walkies_a

Do you have a C:\boot directory?

walkies_a Author

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Apr 16, 2015 1:33 PM in response to Loner T

yes, there is a c:\boot\

Loner T

Level 9

59,477 points

Apr 16, 2015 2:18 PM in response to walkies_a

Is there a c:\boot\bcd file?

walkies_a Author

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Apr 16, 2015 2:19 PM in response to Loner T

yes

Loner T

Level 9

59,477 points

Apr 16, 2015 2:29 PM in response to walkies_a

Try the following steps.

cd c:\boot
attrib bcd -s -h -r
ren bcd bcd.old
bootrec /RebuildBcd

walkies_a Author

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Apr 16, 2015 3:01 PM in response to Loner T

Did not work, get message "the requested system device cannot be found"

Loner T

Level 9

59,477 points

Apr 16, 2015 3:10 PM in response to walkies_a

If I look at my BCD.log file (from the OS X Terminal), I see

cat /Volumes/BOOTCAMP/Boot/BCD.LOG

regf?jC?,?? pDevice\HarddiskVolume4\Boot\BCD?>c?(??:½\

@&?>c?(??:½\

@&?>c?(??:½\

If you ignore the binary data, the highlighted part is where it expects to be and will try to put it in the same location. In your case, previous attempts may have caused the location to be corrupted. There is no 'cat' command on your USB, but a 'more' command may work and will give you binary data, but can you look for this string in the current BCD? When the WindowsRE (GPT5) was created, you BCD is on that partition, and it is NTFS, as your dd of rdisk0s5 shows.

The worst-case scenario is that you will lose the BC partition. If you can see all your files when booted via USB, do you want to copy them to an external disk, before any further attempts are made. Another option is to re-install Windows in the same location, which will copy your current installation to Windows.old.

walkies_a Author

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Apr 16, 2015 6:51 PM in response to Loner T

I have used xcopy to transfer entire c: drive to a folder on external HD, used command:

xcopy c:*.* d:/win/ /e /s /c /f /k /h /g

Hopefully that should have everything. Wasn't sure of a better way to copy everything - not that i necessarily want everything.

Anyhow, if you have any other ideas? I'm all ears!

Loner T

Level 9

59,477 points

Apr 16, 2015 6:57 PM in response to walkies_a

Before you wipe and start over again, if possible, make another copy using xcopy, before you wipe and start over again.

Since you have a 2015 Mac, you can run an EFI install, which is much cleaner and faster, and does not impose the limitations that a legacy BIOS install imposes.

walkies_a Author

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Apr 16, 2015 7:27 PM in response to Loner T

Would the original bootcamp copy not have been an efi install? If not and an EFI install is better how do we do it?!

Loner T

Level 9

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Apr 16, 2015 8:11 PM in response to walkies_a

Yes, it should. You can check the USB for an EFI structure.

1. Erase and convert disk0s5 to Free Space - diskutil eraseVolume free untitled /dev/disk0s5

2. Erase and convert disk0s4 to Free Space - diskutil eraseVolume free untitled /dev/disk0s4

3. This should merge both parts into a single contiguous chunk of space.

4. Insert your BCA-created USB.

5. Power cycle your Mac and hold Alt/Option key.

6. Choose EFI Boot.

7. Point to the Free Space chunk in step 3. This will create an MSR (128MB) and the remainder as NTFS.

8. Install Windows. Install BC drivers by running setup.exe in Bootcamp Folder from the USB and check Device Manager for any unknown devices.

9. Reboot and Test.

The command you use has this help entry.

diskutil erasevolume

Usage: diskutil eraseVolume format name MountPoint|DiskIdentifier|DeviceNode

Completely erase a disk (partition or whole), laying down a new file system

volume. Ownership of the affected disk is required. Format is the specific

file system personality name (or alias) you want to erase it as (JHFS+, etc.).

Name is the (new) volume name (subject to file system naming restrictions), or

can be specified as %noformat% to skip initialization (to skip newfs). You

cannot erase the boot volume.

Example: diskutil eraseVolume JHFS+ UntitledHFS /Volumes/SomeDisk

walkies_a Author

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Apr 16, 2015 8:18 PM in response to Loner T

One quick question, i can now see c: mounted on the desktop in OS X, does this make a difference of need to reinstall?

Bootcamp install not working after update