After update to Yosemite, Windows won't start
Yes, the Yosemite update crippled my Bootcamp partition too. Unfortunately I stumled upon Bootcamp and Yosemite upgrade - potential data loss warning too late to read the warnings...
I’ve a Macbook Pro (early 2011) that runs Windows 7 most of the time. Four years without problems - the Macbook is the best Windows computer ever!
After I experienced some hard to trace Windows crashes in the past days, I thought it was a good idea to start the computer in OS X and check for updates. One of them was Yosemite and as the other updates went smooth, I thought Yosemite would be be a piece of cake too. An error message appeared while installing (something about MBR I think) and now I can only start in OS X, although the Windows partition is still there.
I have read some good tips from the uber-fixer Loner T in Bootcamp and Yosemite upgrade - potential data loss warning, so here is the output from the commands. I hope there is some advice for my disk too :-)
diskutil list:
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/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *512.1 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_HFS Macbook 56.0 GB disk0s2
3: Microsoft Basic Data 455.8 GB disk0s3
diskutil cs list:
—————————————————
No CoreStorage logical volume groups found
sudo gpt -vv -r show /dev/disk0:
——————————————————————————————
gpt show: /dev/disk0: mediasize=512110190592; sectorsize=512; blocks=1000215216
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 1000215215
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 109375000 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC
109784640 262592
110047232 890167296 3 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
1000214528 655
1000215183 32 Sec GPT table
1000215215 1 Sec GPT header
sudo fdisk /dev/disk0:
————————————————————
gpt show: /dev/disk0: mediasize=512110190592; sectorsize=512; blocks=1000215216
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 1000215215
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 109375000 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC
109784640 262592
110047232 890167296 3 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
1000214528 655
1000215183 32 Sec GPT table
1000215215 1 Sec GPT header
MBPvanCristophe:~ Christophe$ sudo fdisk /dev/disk0
Disk: /dev/disk0 geometry: 62260/255/63 [1000215216 sectors]
Signature: 0xAA55
Starting Ending
#: id cyl hd sec - cyl hd sec [ start - size]
------------------------------------------------------------------------
1: EE 1023 254 63 - 1023 254 63 [ 1 - 409639] <Unknown ID>
2: AF 1023 254 63 - 1023 254 63 [ 409640 - 109375000] HFS+
3: 0C 1023 254 63 - 1023 254 63 [ 110047232 - 890167296] Win95 FAT32L
4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
MacBook Pro, OS X Yosemite (10.10.4)
