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Bootcamp missing after expanding partition

From original post:


Fixing missing Bootcamp partition after Mavericks rewrote wrong GPT

MacBook Pro with Retina display, OS X Mavericks (10.9.5)

Posted on Oct 1, 2014 4:56 PM

Reply
47 replies

Oct 1, 2014 4:58 PM in response to Adrianching

1. diskutil list

CCs-MacBook-Pro:~ CheungChing1$ diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *251.0 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Macintosh HD 175.0 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data 55.1 GB disk0s4



2. diskutil cs list

CCs-MacBook-Pro:~ CheungChing1$ diskutil cs list

No CoreStorage logical volume groups found


3. sudo gpt -vv -r show /dev/BootcampDiskWithoutSlice (where BootcampDiskWithoutSlice is of the form disk0 and is visible from the output of 1.)

CCs-MacBook-Pro:~ CheungChing1$ sudo gpt -vv -r show /dev/BootcampDiskWithoutSlice

Password:

gpt show: unable to open device '/dev/BootcampDiskWithoutSlice': No such file or directory

CCs-MacBook-Pro:~ CheungChing1$


4. sudo fdisk /dev/BootcampDiskWithoutSlice

CCs-MacBook-Pro:~ CheungChing1$ sudo fdisk /dev/BootcampDiskWithoutSlice

fdisk: /dev/BootcampDiskWithoutSlice: No such file or directory


5. sudo dd if=/dev/rBootcampDisk count=1 2>/dev/null | hexdump -C (where BootcampDisk is of the formdisk0s4 and is visible from the output of 1. Please note the 'r' preceding the disk0s4 format).

CCs-MacBook-Pro:~ CheungChing1$ sudo dd if=/dev/rBootcampDisk count=1 2>/dev/null | hexdump -C

CCs-MacBook-Pro:~ CheungChing1$



i followed your items 1- 5... but seems there is nothing in item5..


here is the screen shot of the current situation.

User uploaded file


many thanks!

Oct 2, 2014 3:29 AM in response to Loner T

Hi Loner T,


sorry for the late reply.. Coz i ma living in the uk..

As followed the instructions, Command 3 and 5 still the same. And I've tried to replace the "rBootcampDisk with rdisk0s4 count=1 2>" to "rBootCampDisk with

rdisk0s4". but it appeared unknown operand.

User uploaded file

Here was i have done yesterday,

I have OS X and Win7

OS X was 195 GB and Win7 was 55GB, I made 20GB from OS X's partition to unallocated spaces, and back to Win7, used a software to expand the 20GD into the bootcamp. it was fine when i have done it. after a couple of hours, i back home, and i was formatting one of my external hard-disk to exFAT (however, the external hard-disk cannot be recognised in mac if i format it in Windows, or the other way round.)

anyway. it just HAPPENED after i formatted the external hard-disk..........

that's the whole story....

User uploaded file

and i found out that, the 20GB did expanded in Bootcamp, but back to OS X, the 20GB appears in grey, and shown that the Bootcamp is still 55GB.


many many thanks!!!!

Oct 2, 2014 5:02 AM in response to Adrianching

I cannot see the images. Can you post text versions the way you posted the output of diskutil list?


From Boot Camp 5.1: Frequently asked questions


How can a Windows partition be resized after Windows is installed?

You need to delete the Windows partition using the Boot Camp Assistant, and start over to change the size of the Windows partition. Back up your important Windows files first.

Boot Camp: Use third-party utilities

Oct 2, 2014 5:22 AM in response to Loner T

Hi Loner T,


sorry for the late reply.. Coz i ma living in the uk..

As followed the instructions, Command 3 and 5 still the same. And I've tried to replace the "rBootcampDisk with rdisk0s4 count=1 2>" to "rBootCampDisk with rdisk0s4". but it appeared unknown operand.

Here was i have done yesterday,

I have OS X and Win7

OS X was 195 GB and Win7 was 55GB, I made 20GB from OS X's partition to unallocated spaces, and back to Win7, used a software to expand the 20GD into the bootcamp. it was fine when i have done it. after a couple of hours, i back home, and i was formatting one of my external hard-disk to exFAT (however, the external hard-disk cannot be recognised in mac if i format it in Windows, or the other way round.)

anyway. it just HAPPENED..........

that's the whole story.

User uploaded file

Oct 2, 2014 5:23 AM in response to Loner T

thanks! here is the output...


CCs-MacBook-Pro:~ CheungChing1$ sudo gpt -vv -r show /dev/BootcampDiskWithoutSlice with disk0

gpt show: unable to open device '/dev/BootcampDiskWithoutSlice': No such file or directory

CCs-MacBook-Pro:~ CheungChing1$ sudo fdisk /dev/BootcampDiskWithoutSlice with disk0

usage: fdisk [-ieu] [-f mbrboot] [-c cyl -h head -s sect] [-S size] [-r] [-a style] disk

-i: initialize disk with new MBR

-u: update MBR code, preserve partition table

-e: edit MBRs on disk interactively

-f: specify non-standard MBR template

-chs: specify disk geometry

-S: specify disk size

-r: read partition specs from stdin (implies -i)

-a: auto-partition with the given style

-d: dump partition table

-y: don't ask any questions

-t: test if disk is partitioned

`disk' is of the form /dev/rdisk0.

auto-partition styles:

boothfs 8Mb boot plus HFS+ root partition (default)

hfs Entire disk as one HFS+ partition

dos Entire disk as one DOS partition

raid Entire disk as one 0xAC partition

CCs-MacBook-Pro:~ CheungChing1$ sudo dd if=/dev/rBootcampDisk with rdisk0s4 count=1 2>/dev/null | hexdump -C

CCs-MacBook-Pro:~ CheungChing1$ sudo dd if=/dev/rBootcampDisk with rdisk0s4 /dev/null | hexdump -C

dd: unknown operand with

CCs-MacBook-Pro:~ CheungChing1$

Oct 2, 2014 5:58 AM in response to Loner T

Last login: Thu Oct 2 13:55:52 on console

CCs-MacBook-Pro:~ CheungChing1$ sudo gpt -vv -r show /dev/disk0

Password:

gpt show: /dev/disk0: mediasize=251000193024; sectorsize=512; blocks=490234752

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 490234751

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 341796856 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

342206496 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

343476032 39063744

382539776 107694080 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

490233856 863

490234719 32 Sec GPT table

490234751 1 Sec GPT header

CCs-MacBook-Pro:~ CheungChing1$ sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 30515/255/63 [490234752 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 - 341796856] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 342206496 - 1269536] Darwin Boot

4: 0C 1023 254 63 - 1023 254 63 [ 382539776 - 107694080] Win95 FAT32L

CCs-MacBook-Pro:~ CheungChing1$ sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null | hexdump -C

00000000 eb 52 90 4e 54 46 53 20 20 20 20 00 02 08 00 00 |.R.NTFS .....|

00000010 00 00 00 00 00 f8 00 00 3f 00 ff 00 00 18 cd 16 |........?.......|

00000020 00 00 00 00 80 00 80 00 ff 47 6b 06 00 00 00 00 |.........Gk.....|

00000030 00 00 0c 00 00 00 00 00 02 00 00 00 00 00 00 00 |................|

00000040 f6 00 00 00 01 00 00 00 1d e2 7e a0 f0 7e a0 0a |..........~..~..|

00000050 00 00 00 00 fa 33 c0 8e d0 bc 00 7c fb 68 c0 07 |.....3.....|.h..|

00000060 1f 1e 68 66 00 cb 88 16 0e 00 66 81 3e 03 00 4e |..hf......f.>..N|

00000070 54 46 53 75 15 b4 41 bb aa 55 cd 13 72 0c 81 fb |TFSu..A..U..r...|

00000080 55 aa 75 06 f7 c1 01 00 75 03 e9 dd 00 1e 83 ec |U.u.....u.......|

00000090 18 68 1a 00 b4 48 8a 16 0e 00 8b f4 16 1f cd 13 |.h...H..........|

000000a0 9f 83 c4 18 9e 58 1f 72 e1 3b 06 0b 00 75 db a3 |.....X.r.;...u..|

000000b0 0f 00 c1 2e 0f 00 04 1e 5a 33 db b9 00 20 2b c8 |........Z3... +.|

000000c0 66 ff 06 11 00 03 16 0f 00 8e c2 ff 06 16 00 e8 |f...............|

000000d0 4b 00 2b c8 77 ef b8 00 bb cd 1a 66 23 c0 75 2d |K.+.w......f#.u-|

000000e0 66 81 fb 54 43 50 41 75 24 81 f9 02 01 72 1e 16 |f..TCPAu$....r..|

000000f0 68 07 bb 16 68 70 0e 16 68 09 00 66 53 66 53 66 |h...hp..h..fSfSf|

00000100 55 16 16 16 68 b8 01 66 61 0e 07 cd 1a 33 c0 bf |U...h..fa....3..|

00000110 28 10 b9 d8 0f fc f3 aa e9 5f 01 90 90 66 60 1e |(........_...f`.|

00000120 06 66 a1 11 00 66 03 06 1c 00 1e 66 68 00 00 00 |.f...f.....fh...|

00000130 00 66 50 06 53 68 01 00 68 10 00 b4 42 8a 16 0e |.fP.Sh..h...B...|

00000140 00 16 1f 8b f4 cd 13 66 59 5b 5a 66 59 66 59 1f |.......fY[ZfYfY.|

00000150 0f 82 16 00 66 ff 06 11 00 03 16 0f 00 8e c2 ff |....f...........|

00000160 0e 16 00 75 bc 07 1f 66 61 c3 a0 f8 01 e8 09 00 |...u...fa.......|

00000170 a0 fb 01 e8 03 00 f4 eb fd b4 01 8b f0 ac 3c 00 |..............<.|

00000180 74 09 b4 0e bb 07 00 cd 10 eb f2 c3 0d 0a 41 20 |t.............A |

00000190 64 69 73 6b 20 72 65 61 64 20 65 72 72 6f 72 20 |disk read error |

000001a0 6f 63 63 75 72 72 65 64 00 0d 0a 42 4f 4f 54 4d |occurred...BOOTM|

000001b0 47 52 20 69 73 20 6d 69 73 73 69 6e 67 00 0d 0a |GR is missing...|

000001c0 42 4f 4f 54 4d 47 52 20 69 73 20 63 6f 6d 70 72 |BOOTMGR is compr|

000001d0 65 73 73 65 64 00 0d 0a 50 72 65 73 73 20 43 74 |essed...Press Ct|

000001e0 72 6c 2b 41 6c 74 2b 44 65 6c 20 74 6f 20 72 65 |rl+Alt+Del to re|

000001f0 73 74 61 72 74 0d 0a 00 8c a9 be d6 00 00 55 aa |start.........U.|

00000200

CCs-MacBook-Pro:~ CheungChing1$

Oct 2, 2014 6:17 AM in response to Adrianching

Unless you want to make a significant effort, there is no easy way to recover lost space. The NTFS header begin intact is a very good sign.


The following steps fill make the current Windows installation bootable. (Please ignore the i386/boot0 error message in the following steps).


sudo fdisk -e /dev/disk0

setpid 4

07

flag 4

p

w

y


Reboot.


1. Test 1 - Bootcamp volume shows up in Finder.

2. Test 2 - Bootcamp volume files are visible in Finder.

3. Test 3 - Bootcamp can be selected in System Preferences -> Startup Disk.

4. If Test 3 is successful, select Restart.


If you get a black screen with a hanging underline cursor in the top left corner, please be patient and give it a few minutes and check if Windows will come up.


If that does not work, you need Windows Startup Repair using your Windows Installation Media.

Oct 2, 2014 6:26 AM in response to Loner T

Last login: Thu Oct 2 14:23:13 on console

CCs-MacBook-Pro:~ CheungChing1$ sudo fdisk -e /dev/disk0

Password:

fdisk: could not open MBR file /usr/standalone/i386/boot0: No such file or directory

Enter 'help' for information

fdisk: 1> setpid 4

Starting Ending

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

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

*4: 07 1023 254 63 - 1023 254 63 [ 382539776 - 107694080] HPFS/QNX/AUX

Partition id ('0' to disable) [0 - FF]: [7] (? for help) 07

fdisk: 1> flag 4

Partition 4 marked active.

fdisk:*1> p

Disk: /dev/disk0 geometry: 30515/255/63 [490234752 sectors]

Offset: 0 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 - 341796856] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 342206496 - 1269536] Darwin Boot

*4: 07 1023 254 63 - 1023 254 63 [ 382539776 - 107694080] HPFS/QNX/AUX

fdisk:*1> w

Device could not be accessed exclusively.

A reboot will be needed for changes to take effect. OK? [n] y

Writing MBR at offset 0.

fdisk: 1>



is it correct move...?

and i have to reboot manually or it will reboot automatically?


i tried once.. no hope...


thanks....

Bootcamp missing after expanding partition

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