Let me preface this by saying I’ve been digging around a LOT about this problem and that I’ve gotten a lot of the tools that I believe are required to fix the problem- I’ve looked at this thread specifically: Bootcamp partition has disappeared after upgrade to Yosemite 10.10
The problem is similar. I’m going to put as much info as possible here so that we can use our time efficiently- forgive me if I include any extraneous details.
I resized my Windows partition using Winclone Pro v4.4. That worked flawlessly, and I backed up the image to an external hard drive.
I’m using OS X Yosemite 10.10.3 on a 2012 15″ Macbook Pro.
I have two internal hard drives on my Macbook Pro: one for OS X, and the other for Windows (in place of the optical drive). Up until recently the drive for Windows also had my Mac Steam library on it, but I deleted all of that so that I could use my second hard drive just for Boot Camp.
I should also mention that I can see all of my files in the BOOTCAMP drive, so I know the file system is intact.
When I hold down the alt key on booting up, two drives appear: Mac, and Windows. When I select Windows I get a brief pause, followed by “Missing Operating System” on a black screen with a blinking cursor.
Here’s the output of diskutil list:
DHCP-150-064:~ benpekary$ diskutil list
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.1 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Microsoft Basic Data BOOTCAMP 499.9 GB disk0s2
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.1 GB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_CoreStorage 499.2 GB disk1s2
3: Apple_Boot Recovery HD 650.0 MB disk1s3
/dev/disk2
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh HD *498.9 GB disk2
Logical Volume on disk1s2
9544C7D6-4B33-401F-AFA5-98D53C86D080
Unencrypted
/dev/disk3
#: TYPE NAME SIZE IDENTIFIER
0: GSP1RMCULXFRER_EN_DVD *4.7 GB disk3
(disk 3 is an external optical drive plugged in via USB with the windows 7 disk in it. Whenever I try to boot into the Windows 7 DVD, I get the exact same error: missing operating system. And if I “press any key to boot from DVD/CD” nothing happens at all.)
Output of diskutil cs list:
DHCP-150-064:~ benpekary$ diskutil cs list
CoreStorage logical volume groups (1 found)
|
+– Logical Volume Group BF2B99E1-2408-435F-86D3-83F4B591E8EE
=========================================================
Name: Macintosh HD
Status: Online
Size: 499248103424 B (499.2 GB)
Free Space: 18972672 B (19.0 MB)
|
+-< Physical Volume 552157E8-87C1-4253-BA42-BB34D0F247E3
| —————————————————-
| Index: 0
| Disk: disk1s2
| Status: Online
| Size: 499248103424 B (499.2 GB)
|
+-> Logical Volume Family 4A1D38A2-52B6-499E-A0E5-20D589694D2F
———————————————————-
Encryption Status: Unlocked
Encryption Type: None
Conversion Status: NoConversion
Conversion Direction: -none-
Has Encrypted Extents: No
Fully Secu No
Passphrase Required: No
|
+-> Logical Volume 9544C7D6-4B33-401F-AFA5-98D53C86D080
—————————————————
Disk: disk2
Status: Online
Size (Total): 498876809216 B (498.9 GB)
Conversion Progress: -none-
Revertible: Yes (no decryption required)
LV Name: Macintosh HD
Volume Name: Macintosh HD
Content Hint: Apple_HFS
Here’s the output of sudo gpt -vv -r show /dev/disk0 :
DHCP-150-064:~ benpekary$ 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 2008
411648 976361472 2 GPT part – EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
976773120 15
976773135 32 Sec GPT table
976773167 1 Sec GPT header
Message was edited by: BenPekary
