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I've been doing a decent job of following the discussion so far on fixing Bootcamp post-Yosemite. (Running Windows 7.) I've run TestDisk and gotten the following screens of info:
I'm not sure of what to do next. Any help?
MacBook Pro, OS X Yosemite (10.10)
Do not use left/right keys anywhere in Testdisk.
Press Enter and use "P" to list files and look for familiar files. The best file to look for is "System Volume Information", and Bootcamp should have just one.
If you can post the output of the usual five commands, it would be helpful.
Missed the edit window. You should check all three MS Data partition entries for familiar files. The size (the third column) for all of them being the same is a very encouraging sign.
My files are on #4, the second MS Data from 1232365568 to 1465147384.
I feel like "the usual five commands" was a reading comprehension quiz that I just failed. What are they?
Here's the first fdisk command:
sudo fdisk /dev/disk0
...
Disk: /dev/disk0 geometry: 91201/255/63 [1465149168 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: AC 1023 254 63 - 1023 254 63 [ 409640 - 1230686280] <Unknown ID>
3: AB 1023 254 63 - 1023 254 63 [1231095920 - 1269536] Darwin Boot
4: 0C 1023 254 63 - 1023 254 63 [1349916672 - 115230720] Win95 FAT32L
Peters-MacBook-Pro-4:~ petermyers$ diskutil list
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *750.2 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage 630.1 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
4: Microsoft Basic Data 59.0 GB disk0s4
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS MacBook HD *629.7 GB disk1
Logical Volume on disk0s2
7959165E-5811-400A-B0E8-9673CAF86C8E
Unencrypted
No, you did not fail the Quiz. 😉
The usual five commands are (you posted the output of two of them already)
diskutil list
diskutil cs list
sudo gpt -vv -r show /dev/disk0
sudo fdisk /dev/disk0
sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null | hexdump -C
pmyers42 wrote:
My files are on #4, the second MS Data from 1232365568 to 1465147384.
If you have located the files, the current GPT#4 should be deleted (based on what the GPT shows), a new GPT#4 with this start/end created, a new Hybrid MBR generated and a quick set of tests.
I have been using Yosemite Upgrade Broke Bootcamp as a reference thread, if that makes it any easier for you.
diskutil list
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *750.2 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage 630.1 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
4: Microsoft Basic Data 59.0 GB disk0s4
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS MacBook HD *629.7 GB disk1
Logical Volume on disk0s2
7959165E-5811-400A-B0E8-9673CAF86C8E
Unencrypted
diskutil cs list
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group BB50E155-DCA8-4D67-BFAA-4BE463548B81
=========================================================
Name: MacBook HD
Status: Online
Size: 630111375360 B (630.1 GB)
Free Space: 18911232 B (18.9 MB)
|
+-< Physical Volume 09B0544F-198B-4EE3-9473-BC2EFEDEF1FC
| ----------------------------------------------------
| Index: 0
| Disk: disk0s2
| Status: Online
| Size: 630111375360 B (630.1 GB)
|
+-> Logical Volume Family 409362F9-E239-4FB7-AE90-89EBF7E82B89
----------------------------------------------------------
Encryption Status: Unlocked
Encryption Type: None
Conversion Status: NoConversion
Conversion Direction: -none-
Has Encrypted Extents: No
Fully Secure: No
Passphrase Required: No
|
+-> Logical Volume 7959165E-5811-400A-B0E8-9673CAF86C8E
---------------------------------------------------
Disk: disk1
Status: Online
Size (Total): 629740142592 B (629.7 GB)
Conversion Progress: -none-
Revertible: Yes (no decryption required)
LV Name: MacBook HD
Volume Name: MacBook HD
Content Hint: Apple_HFS
sudo gpt -vv -r show /dev/disk0
Password:
gpt show: /dev/disk0: mediasize=750156374016; sectorsize=512; blocks=1465149168
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 1465149167
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 1230686280 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
1231095920 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
1232365456 117551216
1349916672 115230720 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
1465147392 1743
1465149135 32 Sec GPT table
1465149167 1 Sec GPT header
sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null | hexdump -C
00000000 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00000020 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0d 0a |--------------..|
00000030 0d 0a 44 75 6d 69 74 72 75 20 53 61 6d 6f 68 76 |..Dumitru Samohv|
00000040 61 6c 6f 76 0d 0a 50 65 73 73 61 63 0d 0a 55 6e |alov..Pessac..Un|
00000050 69 76 65 72 73 69 74 79 0d 0a 53 69 6e 67 6c 65 |iversity..Single|
00000060 0d 0a 34 20 6e 65 77 20 70 68 6f 74 6f 73 0d 0a |..4 new photos..|
00000070 0d 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |..--------------|
00000080 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
000000b0 2d 2d 0d 0a 0d 0a 54 77 6f 6f 20 69 73 20 74 68 |--....Twoo is th|
000000c0 65 20 6d 6f 73 74 20 66 75 6e 20 77 61 79 20 74 |e most fun way t|
000000d0 6f 20 6d 65 65 74 20 6e 65 77 20 70 65 6f 70 6c |o meet new peopl|
000000e0 65 20 69 6e 20 79 6f 75 72 20 61 72 65 61 0d 0a |e in your area..|
000000f0 0d 0a 68 74 74 70 3a 2f 2f 6d 61 69 6c 2e 74 77 |..http://mail.tw|
00000100 6f 6f 2e 63 6f 6d 2f 6d 2f 68 24 6d 65 32 68 4f |oo.com/m/h$me2hO|
00000110 55 0d 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |U..-------------|
00000120 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00000150 2d 2d 2d 0d 0a 44 6f 6e 27 74 20 77 61 6e 74 20 |---..Don't want |
00000160 74 6f 20 72 65 63 65 69 76 65 20 74 68 65 73 65 |to receive these|
00000170 20 6d 61 69 6c 73 3f 20 46 6f 6c 6c 6f 77 20 74 | mails? Follow t|
00000180 68 69 73 20 6c 69 6e 6b 3a 20 68 74 74 70 3a 2f |his link: http:/|
00000190 2f 6d 61 69 6c 2e 74 77 6f 6f 2e 63 6f 6d 2f 6d |/mail.twoo.com/m|
000001a0 2f 41 73 33 62 65 32 4f 79 0d 0a 54 57 4f 4f 20 |/As3be2Oy..TWOO |
000001b0 4e 56 2f 53 41 2c 20 55 42 49 44 4f 43 41 20 43 |NV/SA, UBIDOCA C|
000001c0 65 6e 74 65 72 20 33 31 34 35 2c 20 31 30 35 20 |enter 3145, 105 |
000001d0 52 6f 75 74 65 20 50 6f 6d 6d 69 65 72 73 2c 20 |Route Pommiers, |
000001e0 46 2d 37 34 33 37 30 20 42 65 6c 6c 65 76 75 65 |F-74370 Bellevue|
000001f0 2c 20 46 72 61 6e 63 65 20 69 6e 66 6f 2d 65 6e |, France info-en|
00000200
To quote from the other thread:
sudo gdisk /dev/disk0
p
d
4
n
4
86923264
538218489
0700
p
w
y
I assume I modify some of these values for my situation, yes?
pmyers42 wrote:
To quote from the other thread:
sudo gdisk /dev/disk0
p
d
4
n
4
86923264 1232365568
538218489 1465147384
0700
p
w
y
I assume I modify some of these values for my situation, yes?
Yes, I just plugged in the values from your previous post. Reboot after this change.
After this verify that the Bootcamp volume shows up with files and can be selected in Startup Disk. Recreate the Hybrid MBR via Gdisk, reboot and test.
Your GPT output shows the typical gap between GPT#3 and GPT#4 and your Testdisk NTFS header is right in that gap.
OK. Doing a quick Time Machine back-up before making changes. I don't know what time zone you're in, but don't feel like you have to wait up for me. If this doesn't get resolved until yesterday or Friday, it's no big deal.
Thanks for the help so far.
OK, so I can now see BOOTCAMP, but trying to boot from it brought up a screen saying there was no bootable disk. If I understand correctly, the next step is what I'm copying from the other post, but I'll await your confirmation:
sudo gdisk /dev/disk0
GPT fdisk (gdisk) version 0.8.10
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/disk0: 490234752 sectors, 233.8 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 59BDFEEB-1EB4-4529-94FE-3CBC2C3CD513
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 490234718
Partitions will be aligned on 8-sector boundaries
Total free space is 2604 sectors (1.3 MiB)
Number Start (sector) End (sector) Size Code Name
1 40 409639 200.0 MiB EF00 EF
2 409640 401060383 191.0 GiB AF05 Macintosh HD
3 401060384 402329919 619.9 MiB AB00 Re
4 402331648 490233848 41.9 GiB 0700 Microsoft basic data
Command (? for help): r
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): AF
Set the bootable flag? (Y/N): n
Creating entry for GPT partition #3 (MBR partition #3)
Enter an MBR hex code (default AB): AB
Set the bootable flag? (Y/N): n
Creating entry for GPT partition #4 (MBR partition #4)
Enter an MBR hex code (default 07): 07
Set the bootable flag? (Y/N): y
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/disk0.
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.
Now Reboot and verify the output of fdisk again.
Yes, this is the correct set of steps. You can run sudo disk /dev/disk0 before and after these steps to make sure you see an entry #4 which is set to be bootable and point to the correct start/end that you found from Testdisk.
I need to change the example because it uses a non-CoreStorage setup.
On my Yosemite machine, the second entry is "AC" not "AF" as is normal for non-CS volumes. While creating the Hybrid MBR, Gdisk uses the values that it sees in GPT to derive the values and these are always correct. Use the defaults as suggested, except for boot ability.
sudo fdisk /dev/disk0
Password:
Disk: /dev/disk0 geometry: 31130/255/63 [500118192 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: AC 1023 254 63 - 1023 254 63 [ 409640 - 250392096] <Unknown ID>
3: AB 1023 254 63 - 1023 254 63 [ 250801736 - 1269536] Darwin Boot
*4: 07 1023 254 63 - 1023 254 63 [ 252071936 - 248045568] HPFS/QNX/AUX
All's well now! Thanks so much for your help. I have to ask, though, why did the instructions have me only mark the Windows partition as bootable? It made the computer book to Windows by default, and I had to reboot a couple times to set up the default to be the Mac side again.
The OSX side uses GPT/EFI to decide what partitions to load/boot from. The Traditional Windows-via-Bootcamp uses the MBR (Hybrid) that you created to boot from. You can look at the bless man page (https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/ man8/bless.8.html) to see how it works.
The following is typically used to switch from OSX to Windows via Startup Disk.
bless --mount directory [--file file] [--setBoot] [--nextonly] [--shortform] [--legacy]
[--legacydrivehint device] [--options string] [--quiet | --verbose]
See usage of --nextonly and --legacydrivehint on the man page.
If you get "stuck" on Windows, a PRAM reset also helps, as noted in OS X Mavericks: Reset your computer’s PRAM.
Yosemite Bootcamp Breakage
