Another Windows 7 Yosemite problem

I have Windows 7 (where I increased the partition size 😟) which ran under bootcamp until Yosemite, then had to be started by holding down the alt key. With he recent upgrade this option has gone.

I've looked at similar threads and here are the results of Loner's questions:

/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 300.0 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data 90.2 GB disk0s4

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: CD_partition_scheme Audio CD *349.5 MB disk1

1: CD_DA 30.8 MB disk1s1

2: CD_DA 24.4 MB disk1s2

3: CD_DA 34.1 MB disk1s3

4: CD_DA 36.0 MB disk1s4

5: CD_DA 58.1 MB disk1s5

6: CD_DA 28.9 MB disk1s6

7: CD_DA 29.8 MB disk1s7

8: CD_DA 31.5 MB disk1s8

9: CD_DA 43.0 MB disk1s9

10: CD_DA 32.8 MB disk1s10

/dev/disk2

#: TYPE NAME SIZE IDENTIFIER

0: Apple_partition_scheme *100.7 MB disk2

1: Apple_partition_map 32.3 KB disk2s1

2: Apple_HFS DiskDrill 100.7 MB disk2s2

/dev/disk4

#: TYPE NAME SIZE IDENTIFIER

0: Apple_partition_scheme *2.0 TB disk4

1: Apple_partition_map 32.3 KB disk4s1

2: Apple_HFSX Time Machine Backups 2.0 TB disk4s2

diskutil cs list

No CoreStorage logical volume groups found

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 585937496 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

586347136 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

587616672 212891232

800507904 176265216 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

976773120 15

976773135 32 Sec GPT table

976773167 1 Sec GPT header

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 - 585937496] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 586347136 - 1269536] Darwin Boot

4: 0C 1023 254 63 - 1023 254 63 [ 800507904 - 176265216] Win95 FAT32L

I've run testdisk, selected sudo to get root privilege

elect a media (use Arrow keys, then press Enter):

>Disk /dev/disk0 - 500 GB / 465 GiB (RO)

Disk /dev/disk2 - 100 MB / 96 MiB (RO)

Disk /dev/disk7 - 1998 GB / 1861 GiB (RO)

Disk /dev/rdisk0 - 500 GB / 465 GiB (RO)

Disk /dev/rdisk1 - 349 MB / 333 MiB (RO)

Disk /dev/rdisk2 - 100 MB / 96 MiB (RO)

Disk /dev/rdisk7 - 1998 GB / 1861 GiB (RO)

Based on previous threads I've chosen rdisk0 (not sure why)

Got the message

Disk /dev/rdisk0 - 500 GB / 465 GiB (RO)

Write access for this media is not available.

TestDisk won't be able to modify it.

And proceeded with continue without write access

To get

Disk /dev/rdisk0 - 500 GB / 465 GiB (RO)

Please select the partition table type, press Enter when done.

[Intel ] Intel/PC partition

[EFI GPT] EFI GPT partition map (Mac i386, some x86_64...)

[Humax ] Humax partition table

[Mac ] Apple partition map

[None ] Non partitioned media

[Sun ] Sun Solaris partition

[XBox ] XBox partition

>[Return ] Return to disk selection

Chose EFI GPT (since it was auto detected) to get

Current partition structure:

Partition Start End Size in sectors

1 P EFI System 40 409639 409600 [EFI system partitio

2 P Mac HFS 409640 586347135 585937496 [Customer]

3 P Mac Boot 586347136 587616671 1269536 [Recovery HD]

No FAT, NTFS, ext2, JFS, Reiser, cramfs or XFS marker

4 P MS Data 800507904 976773119 176265216 [BOOTCAMP]

4 P MS Data 800507904 976773119 176265216 [BOOTCAMP]

WHERE DO I GO FROM HERE PLEASE