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Bootcamp not working after Yosemite update

Hi,

I have similar problem after updating to Yosemite, now I can't boot into windows. There is no Windows option at startup when holding on ALT button and in disk utility, it showed Mac OS X partition with disks greyed out. I updated to Yosemite on my 11 inch Mac air and Mac Pro with no problem, before I decided to update my sons iMac (which has his school work) and ran into this problem. I remembered I use a third party program called Paragon NTFS. Could this be the problem?

Please Help.

Posted on Oct 27, 2014 5:19 AM

55 replies

Nov 6, 2014 2:50 PM in response to Loner T

Loner T,

This the first screen after the Deeper Scan,

The first time, I went into MS Data 19353519615 2306475518 552955904

and found familiar files under 781864960 / 1257201663 / 475336704

And when we create a new GPT3 using the above start address but with the size of the whole disk, we found no NTFS header.

The last Deeper Scan I did, I went into the MS Data 1953523711 3047000062 1093476352

to look for MS Data with sizes close to 559 GB and found these,

D MS Data 787781632 1953523711 1165742080 [BOOTCAMP]

D MS Data 787781638 1953523717 1165742080 [BOOTCAMP]

but there is no 781864960 / 1257201663 / 475336704 to be found.

Does it matter which set of MS Data I look into?

If so, how do I go back to the first screen after the Deeper Scan? Pressing quit or Escape take me back to the screen where I have to Analyse the disk again.

Do you want me to try and use 781864960/1257201663/475336704 as GPR3?

Loner T

Level 9

59,513 points

Nov 6, 2014 3:27 PM in response to Redeagles-143

You have entries like

MS Data 860047360 1953523711 1093476352

NTFS found using backup sector, blocksize=4096, 559 GB / 521 GiB

This is the GPT right after upgrade, as seen in your first screen shot. If you look at the first screen you posted before any changes were made, 1953523711 is one byte before 1953523712 where your GPT 4 ends. NTFS stores information at the beginning and the end of the partition, and this is why this number was chosen.

Each MS Data is self-contained. 781864960/1257201663/475336704 this seems to be invalid, even though it was discovered at some point. Looking at the image on the first page, you are in the /Users directory, not at the partition header, so this indicates an incorrect choice. The other missing piece is that there is no "System Volume Information" in this partition, because it is the beginning of a directory. The confusing part is that this now shows up as "/" and also has "System Volume information". It does not hurt to try this one. Please try this, but it will not be the whole partition.

Was any partitioning executed within Windows, if you can recall?

You also have the following two, which are inside your OSX partition (This may indicate a bug in Testdisk). But the first line ends at the correct byte to indicate a backup NTFS entry. Thesecond entry is 5 bytes beyond the GPT and is likely invalid.

D MS Data 787781632 1953523711 1165742080 [BOOTCAMP]

D MS Data 787781638 1953523717 1165742080 [BOOTCAMP]

jjkeele

Level 1

0 points

Nov 7, 2014 1:29 AM in response to Loner T

Hi Loner T ... desperate for assistance if possible!! I've posted all my dumps here:

Win7 missing after Yosemite upgrade

But I'm not seeing the same NTFS preamble as the others!

Please help!

Nov 7, 2014 5:12 PM in response to Loner T

Loner T,

I tried with this 787781632 1953523711 1165742080

and I have Bootcamp showing on Deskyop and also in Finder, but when I go in there it is empty.

Last login: Sat Nov 8 01:03:20 on console

An-Duongs-iMac:~ akduong$ diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Mac OSX 400.1 GB disk0s2

3: Microsoft Basic Data BOOTCAMP 596.9 GB disk0s3

An-Duongs-iMac:~ akduong$ sudo gpt -vv -r show /dev/disk0

Password:

gpt show: /dev/disk0: mediasize=1000204886016; sectorsize=512; blocks=1953525168

gpt show: /dev/disk0: PMBR at sector 0

gpt show: /dev/disk0: Pri GPT at sector 1

gpt show: /dev/disk0: Sec GPT at sector 1953525167

start size index contents

0 1 PMBR

1 1 Pri GPT header

2 32 Pri GPT table

34 6

40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

409640 781455320 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

781864960 5916672

787781632 1165742080 3 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

1953523712 1423

1953525135 32 Sec GPT table

1953525167 1 Sec GPT header

An-Duongs-iMac:~ akduong$ sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 121601/255/63 [1953525168 sectors]

Signature: 0xAA55

Starting Ending

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

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

1: EE 0 0 2 - 1023 255 63 [ 1 - 1953525167] <Unknown ID>

2: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

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

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

An-Duongs-iMac:~ akduong$ sudo dd if=/dev/rdisk0s3 count=1 2>/dev/null | hexdump -C

00000000 eb 58 90 42 53 44 20 20 34 2e 34 00 02 40 20 00 |.X.BSD 4.4..@ .|

00000010 02 00 00 00 00 f0 00 00 20 00 ff 00 00 00 00 00 |........ .......|

00000020 00 d0 7b 45 bc 2b 02 00 00 00 00 00 02 00 00 00 |..{E.+..........|

00000030 01 00 06 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|

00000040 00 00 29 06 12 39 78 42 4f 4f 54 43 41 4d 50 20 |..)..9xBOOTCAMP |

00000050 20 20 46 41 54 33 32 20 20 20 fa 31 c0 8e d0 bc | FAT32 .1....|

00000060 00 7c fb 8e d8 e8 00 00 5e 83 c6 19 bb 07 00 fc |.|......^.......|

00000070 ac 84 c0 74 06 b4 0e cd 10 eb f5 30 e4 cd 16 cd |...t.......0....|

00000080 19 0d 0a 4e 6f 6e 2d 73 79 73 74 65 6d 20 64 69 |...Non-system di|

00000090 73 6b 0d 0a 50 72 65 73 73 20 61 6e 79 20 6b 65 |sk..Press any ke|

000000a0 79 20 74 6f 20 72 65 62 6f 6f 74 0d 0a 00 00 00 |y to reboot.....|

000000b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|

000001f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 aa |..............U.|

00000200

An-Duongs-iMac:~ akduong$

Nov 7, 2014 5:21 PM in response to Loner T

I also tried with this781864960/1257201663/475336704 and nothing come up after reboot.

Last login: Sat Nov 8 01:17:26 on console

An-Duongs-iMac:~ akduong$ pdiskutil list

-bash: pdiskutil: command not found

An-Duongs-iMac:~ akduong$ diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Mac OSX 400.1 GB disk0s2

3: Microsoft Basic Data 243.4 GB disk0s3

An-Duongs-iMac:~ akduong$ sudo gpt -vv -r show /dev/disk0

Password:

gpt show: /dev/disk0: mediasize=1000204886016; sectorsize=512; blocks=1953525168

gpt show: /dev/disk0: PMBR at sector 0

gpt show: /dev/disk0: Pri GPT at sector 1

gpt show: /dev/disk0: Sec GPT at sector 1953525167

start size index contents

0 1 PMBR

1 1 Pri GPT header

2 32 Pri GPT table

34 6

40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

409640 781455320 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

781864960 475336704 3 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

1257201664 696323471

1953525135 32 Sec GPT table

1953525167 1 Sec GPT header

An-Duongs-iMac:~ akduong$ sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 121601/255/63 [1953525168 sectors]

Signature: 0xAA55

Starting Ending

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

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

1: EE 0 0 2 - 1023 255 63 [ 1 - 1953525167] <Unknown ID>

2: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

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

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

An-Duongs-iMac:~ akduong$ sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null | hexdump -C

An-Duongs-iMac:~ akduong$ sudo dd if=/dev/rdisk0s3 count=1 2>/dev/null | hexdump -C

00000000 21 8b 74 24 10 8b 0e 68 c8 47 44 00 ff 15 4c 31 |!.t$...h.GD...L1|

00000010 43 00 0f b6 c8 f7 d9 1b c9 23 4c 24 0c 89 0e 5e |C........#L$...^|

00000020 5d c3 8b 44 24 10 5e c7 00 c8 47 44 00 c6 40 04 |]..D$.^...GD..@.|

00000030 00 c6 40 05 00 5d c3 8b 74 24 10 57 8b 7c 24 10 |..@..]..t$.W.|$.|

00000040 85 f6 74 1a 8b 17 89 16 8b 4f 04 89 4e 04 85 c9 |..t......O..N...|

00000050 74 06 8b 01 8b 10 ff d2 8b 47 08 89 46 08 83 fd |t........G..F...|

00000060 01 75 11 8b 4f 04 85 c9 74 0a 8b 11 8b 42 04 5f |.u..O...t....B._|

00000070 5e 5d ff e0 5f 5e 5d c3 cc cc cc cc cc cc cc cc |^].._^].........|

00000080 8b 44 24 0c 83 f8 04 74 09 89 44 24 0c e9 3e ff |.D$....t..D$..>.|

00000090 ff ff 8b 44 24 08 32 c9 c7 00 c8 47 44 00 88 48 |...D$.2....GD..H|

000000a0 04 88 48 05 c3 cc cc cc cc cc cc cc cc cc cc cc |..H.............|

000000b0 6a ff 68 f8 11 43 00 64 a1 00 00 00 00 50 64 89 |j.h..C.d.....Pd.|

000000c0 25 00 00 00 00 51 56 57 8b f9 8b 4c 24 1c 8d 47 |%....QVW...L$..G|

000000d0 08 50 83 ec 0c 8b f4 89 0e 8b 54 24 30 89 56 04 |.P........T$0.V.|

000000e0 8b 4c 24 30 c7 44 24 24 00 00 00 00 89 64 24 18 |.L$0.D$$.....d$.|

000000f0 85 c9 74 06 8b 01 8b 10 ff d2 8b 44 24 34 b9 34 |..t........D$4.4|

00000100 49 44 00 89 46 08 e8 25 bf fe ff 0f b6 c8 f7 d9 |ID..F..%........|

00000110 1b c9 81 e1 34 49 44 00 89 0f 8b 4c 24 20 c7 44 |....4ID....L$ .D|

00000120 24 14 ff ff ff ff 85 c9 74 07 8b 11 8b 42 04 ff |$.......t....B..|

00000130 d0 8b 4c 24 0c 5f 64 89 0d 00 00 00 00 5e 83 c4 |..L$._d......^..|

00000140 10 c2 0c 00 cc cc cc cc cc cc cc cc cc cc cc cc |................|

00000150 6a ff 68 f8 11 43 00 64 a1 00 00 00 00 50 64 89 |j.h..C.d.....Pd.|

00000160 25 00 00 00 00 51 56 57 8b f9 8b 44 24 1c 83 ec |%....QVW...D$...|

00000170 0c 8b f4 c7 07 00 00 00 00 89 06 8b 4c 24 2c 89 |............L$,.|

00000180 4e 04 8b 4c 24 2c c7 44 24 20 00 00 00 00 89 64 |N..L$,.D$ .....d|

00000190 24 14 85 c9 74 06 8b 11 8b 02 ff d0 8b 4c 24 30 |$...t........L$0|

000001a0 89 4e 08 8b cf e8 06 ff ff ff 8b 4c 24 20 c7 44 |.N.........L$ .D|

000001b0 24 14 ff ff ff ff 85 c9 74 07 8b 11 8b 42 04 ff |$.......t....B..|

000001c0 d0 8b 4c 24 0c 8b c7 5f 64 89 0d 00 00 00 00 5e |..L$..._d......^|

000001d0 83 c4 10 c2 10 00 cc cc cc cc cc cc cc cc cc cc |................|

000001e0 6a ff 68 f8 11 43 00 64 a1 00 00 00 00 50 64 89 |j.h..C.d.....Pd.|

000001f0 25 00 00 00 00 51 56 57 8b f9 8b 44 24 1c 6a 00 |%....QVW...D$.j.|

00000200

An-Duongs-iMac:~ akduong$

Loner T

Level 9

59,513 points

Nov 7, 2014 5:49 PM in response to Redeagles-143

1. This is becoming very interesting now. The OS X partition was shrunk, but it still boots. This means there is quite a bit of unused contiguous space in the OS X partition which has never been touched.

2. The 781864960 seems to be one of the numbers that should be used.

3. The Secondary GPT is still intact at 1953525135 . This allows 1953523717 to be a valid end for NTFS instead of 1953523712 being the limit. You found an entry that had the end "17" but I had suggested that you discard it, because I was afraid of corrupting the secondary GPT.

D MS Data 787781638 1953523717 1165742080 [BOOTCAMP]

The entry was 6 bytes further than the following one and is worth a test since you have already tested the one starting at 1632.

D MS Data 787781632 1953523711 1165742080 [BOOTCAMP]

Nov 7, 2014 6:19 PM in response to Loner T

Thanks for the quick reply, are you suggesting that I should tryD MS Data 787781638 1953523717 1165742080 [BOOTCAMP]?

Loner T

Level 9

59,513 points

Nov 7, 2014 6:30 PM in response to Redeagles-143

Yes, please. It is worth a quick test.

Nov 9, 2014 4:25 AM in response to Loner T

Tried D MS Data 787781638 1953523717 1165742080 [BOOTCAMP]

with the end address 1953523711

Last login: Sun Nov 9 12:19:17 on console