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Can't access windows boot camp partition

I installed Windows 10 on my hard drive through boot camp and cannot access Windows on it anymore. I can't select it as the startup disk and can't access it on disk utility. It just lists it as disk0s4 and not even the name. When running repair, it gives me this error: "Unknown filesystem version: 5.3d". How can I fix it or get my data off it?

MacBook Pro (13-inch Mid 2012), iOS 11.2.1

Posted on Jan 21, 2018 11:37 AM

Reply
26 replies

Jan 24, 2018 3:36 PM in response to Loner T

Here it is:

diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.1 GB
disk0

1: EFI EFI 209.7 MB
disk0s1

2: Apple_HFS Macintosh HD 430.0 GB
disk0s2

3: Apple_Boot Recovery HD 650.0 MB
disk0s3

4: Microsoft Basic Data 45.0 GB disk0s4


sudo fdisk /dev/disk0

Password:

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 -
839843744] HFS+

3: AB 1023 254
63 - 1023 254
63 [ 840253384 - 1269536] Darwin Boot

4: 0C 1023 254
63 - 1023 254
63 [ 888883200 -
87889920] Win95 FAT32L

Jan 25, 2018 2:40 PM in response to Loner T

Alright here it is:

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
839843744 2
GPT part - 48465300-0000-11AA-AA11-00306543ECAC


840253384 1269536 3
GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC


841522920
47360280


888883200
87889920 4
GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7


976773120 15


976773135 32 Sec GPT table


976773167 1 Sec GPT header

Jan 25, 2018 7:32 PM in response to crozmanfromanchorage

crozmanfromanchorage wrote:


Alright here it is:

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
839843744 2
GPT part - 48465300-0000-11AA-AA11-00306543ECAC


840253384 1269536 3
GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC


841522920
47360280


888883200
87889920 4
GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7


976773120 15


976773135 32 Sec GPT table


976773167 1 Sec GPT header


Can you explain what happened to create this gap? It is about 23GB.

Jan 28, 2018 7:04 PM in response to Loner T

Did that and restarted. Ran repair on diskutility and am now getting another error: "Invalis BS_jmpBoot in boot block: cccccc"


Here is the output from what I did:

sudo gdisk /dev/rdisk0

Password:

GPT fdisk (gdisk) version 1.0.3


Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

Partition table scan:


MBR: hybrid


BSD: not present


APM: not present


GPT: present


Found valid GPT with hybrid MBR; using GPT.


Command (? for help): p

Disk /dev/rdisk0: 976773168 sectors, 465.8 GiB

Sector size (logical): 512 bytes

Disk identifier (GUID): 2AC1F790-DB9C-4612-BC99-2F206F7E5B43

Partition table holds up to 128 entries

Main partition table begins at sector 2 and ends at sector 33

First usable sector is 34, last usable sector is 976773134

Partitions will be aligned on 8-sector boundaries

Total free space is 21 sectors (10.5 KiB)


Number
Start (sector) End (sector)
Size Code
Name

1 40 409639
200.0 MiB
EF00
EFI System Partition

2 409640 840253383
400.5 GiB
AF00

3 840253384 841522919
619.9 MiB
AB00

4 841522920 976773119
64.5 GiB 0700
Microsoft basic data


Command (? for help): r


Recovery/transformation command (? for help): o


Disk size is 976773168 sectors (465.8 GiB)

MBR disk identifier: 0xA855315C

MBR partitions:


Number
Boot
Start Sector
End Sector
Status Code

1 1 409639
primary 0xEE

2 409640 840253383
primary 0xAF

3 840253384 841522919
primary 0xAB


Recovery/transformation command (? for help): h


WARNING! Hybrid MBRs are flaky and dangerous! If you decide not to use one,

just hit the Enter key at the below prompt and your MBR partition table will

be untouched.


Type from one to three GPT partition numbers, separated by spaces, to be

added to the hybrid MBR, in sequence: 2 3 4

Place EFI GPT (0xEE) partition first in MBR (good for GRUB)? (Y/N): y


Creating entry for GPT partition #2 (MBR partition #2)

Enter an MBR hex code (default AF):

Set the bootable flag? (Y/N): n


Creating entry for GPT partition #3 (MBR partition #3)

Enter an MBR hex code (default AB):

Set the bootable flag? (Y/N): n


Creating entry for GPT partition #4 (MBR partition #4)

Enter an MBR hex code (default 07):

Set the bootable flag? (Y/N): y


Recovery/transformation command (? for help): o


Disk size is 976773168 sectors (465.8 GiB)

MBR disk identifier: 0xA855315C

MBR partitions:


Number
Boot
Start Sector
End Sector
Status Code

1 1 409639
primary 0xEE

2 409640 840253383
primary 0xAF

3 840253384 841522919
primary 0xAB

4 * 841522920 976773119
primary 0x07


Recovery/transformation command (? for help): w


Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING

PARTITIONS!!


Do you want to proceed? (Y/N): y

OK; writing new GUID partition table (GPT) to /dev/rdisk0.

Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

Warning: The kernel may continue to use old or deleted partitions.

You should reboot or remove the drive.

The operation has completed successfully.

Jan 28, 2018 7:28 PM in response to Loner T

Here it is:


sudo gdisk /dev/rdisk0

GPT fdisk (gdisk) version 1.0.3


Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

Partition table scan:


MBR: hybrid


BSD: not present


APM: not present


GPT: present


Found valid GPT with hybrid MBR; using GPT.


Command (? for help): p

Disk /dev/rdisk0: 976773168 sectors, 465.8 GiB

Sector size (logical): 512 bytes

Disk identifier (GUID): 2AC1F790-DB9C-4612-BC99-2F206F7E5B43

Partition table holds up to 128 entries

Main partition table begins at sector 2 and ends at sector 33

First usable sector is 34, last usable sector is 976773134

Partitions will be aligned on 8-sector boundaries

Total free space is 21 sectors (10.5 KiB)


Number
Start (sector) End (sector)
Size Code
Name

1 40 409639
200.0 MiB
EF00
EFI System Partition

2 409640 840253383
400.5 GiB
AF00

3 840253384 841522919
619.9 MiB
AB00

4 841522920 976773119
64.5 GiB 0700
Microsoft basic data


Can't access windows boot camp partition

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