Q: bootcamp not working after yosemite install

here is the screen shots of terminal

/dev/disk0

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *500.1 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:          Apple_CoreStorage                         275.0 GB   disk0s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

   4:       Microsoft Basic Data                         100.0 GB   disk0s4

/dev/disk1

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:                  Apple_HFS Macintosh HD           *274.6 GB   disk1

                                 Logical Volume on disk0s2

                                 414C1913-69F6-4D1F-AA25-DC77900BFE6E

                                 Unencrypted

/dev/disk2

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:     FDisk_partition_scheme                        *8.2 GB     disk2

   1:                 DOS_FAT_32 ESD-USB                 8.2 GB     disk2s1

diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group E3ACEE1B-8082-4415-8896-5D054A6D17E2

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

    Name:         Macintosh HD

    Status:       Online

    Size:         274999996416 B (275.0 GB)

    Free Space:   18935808 B (18.9 MB)

    |

    +-< Physical Volume 20D0D68F-5826-43D1-BBC1-C0E822A50D60

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

    |   Index:    0

    |   Disk:     disk0s2

    |   Status:   Online

    |   Size:     274999996416 B (275.0 GB)

    |

    +-> Logical Volume Family 5BB9DAE5-27D5-4C9E-8518-538FC61477DB

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

        Encryption Status:       Unlocked

        Encryption Type:         None

        Conversion Status:       NoConversion

        Conversion Direction:    -none-

        Has Encrypted Extents:   No

        Fully Secure:            No

        Passphrase Required:     No

        |

        +-> Logical Volume 414C1913-69F6-4D1F-AA25-DC77900BFE6E

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

            Disk:                  disk1

            Status:                Online

            Size (Total):          274628739072 B (274.6 GB)

            Conversion Progress:   -none-

            Revertible:            Yes (no decryption required)

            LV Name:               Macintosh HD

            Volume Name:           Macintosh HD

            Content Hint:          Apple_HFS

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group E3ACEE1B-8082-4415-8896-5D054A6D17E2

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

    Name:         Macintosh HD

    Status:       Online

    Size:         274999996416 B (275.0 GB)

    Free Space:   18935808 B (18.9 MB)

    |

    +-< Physical Volume 20D0D68F-5826-43D1-BBC1-C0E822A50D60

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

    |   Index:    0

    |   Disk:     disk0s2

    |   Status:   Online

    |   Size:     274999996416 B (275.0 GB)

    |

    +-> Logical Volume Family 5BB9DAE5-27D5-4C9E-8518-538FC61477DB

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

        Encryption Status:       Unlocked

        Encryption Type:         None

        Conversion Status:       NoConversion

        Conversion Direction:    -none-

        Has Encrypted Extents:   No

        Fully Secure:            No

        Passphrase Required:     No

        |

        +-> Logical Volume 414C1913-69F6-4D1F-AA25-DC77900BFE6E

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

            Disk:                  disk1

            Status:                Online

            Size (Total):          274628739072 B (274.6 GB)

            Conversion Progress:   -none-

            Revertible:            Yes (no decryption required)

            LV Name:               Macintosh HD

            Volume Name:           Macintosh HD

            Content Hint:          Apple_HFS

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  537109368      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

  537519008    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

  538788544  242672960        

  781461504  195311616      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

  976773120         15        

  976773135         32         Sec GPT table

  976773167          1         Sec GPT header

Disk: /dev/disk0 geometry: 60801/255/63 [976773168 sectors]

Signature: 0xAA55

         Starting       Ending

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

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

1: EE    0   0   2 - 1023 254  63 [         1 -  781461503] <Unknown ID>

*2: 07 1023 254  63 - 1023 254  63 [ 781461504 -  195311616] HPFS/QNX/AUX

3: 00    0   0   0 -    0   0   0 [         0 -          0] unused     

4: 00    0   0   0 -    0   0   0 [         0 -          0] unused