Window 7 Bootcamp missing after Yosemite 10.10.5 Install

Installed Yosemite and now my Windows 7 Bootcamp is missing. I'm using a MacBook Pro (15-inch, early 2011).

Last login: Sat Sep 26 16:47:16 on ttys000

CTVs-MacBook-Pro:~ CTVACCT$ diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Macintosh HD 275.2 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data 100.2 GB disk0s4

/dev/disk2

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *2.0 TB disk2

1: EFI EFI 209.7 MB disk2s1

2: Apple_HFS Time Machine Backups 2.0 TB disk2s2

CTVs-MacBook-Pro:~ CTVACCT$ diskutil cs list

No CoreStorage logical volume groups found

CTVs-MacBook-Pro:~ CTVACCT$ 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 537510624 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

537920264 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

539189800 241786328

780976128 195796992 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

976773120 15

976773135 32 Sec GPT table

976773167 1 Sec GPT header

CTVs-MacBook-Pro:~ CTVACCT$ sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 60801/255/63 [976773168 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 - 537510624] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 537920264 - 1269536] Darwin Boot

4: 0C 1023 254 63 - 1023 254 63 [ 780976128 - 195796992] Win95 FAT32L

CTVs-MacBook-Pro:~ CTVACCT$