Apple Event: May 7th at 7 am PT
Hi everybody,
I tried to change my partition size to allow more space for Windows without realizing that it would ruin my Windows half. Now when I try to boot into Windows, I get "Missing Operating System"
HELP!
Thanks, Harry
MacBook Pro, OS X Yosemite (10.10.3)
Okay, it's done!
Results:
Disk /dev/disk0 - 500 GB / 465 GiB - 976773168 sectors (RO)
The harddisk (500 GB / 465 GiB) seems too small! (< 2589 GB / 2411 GiB)
Check the harddisk size: HD jumpers settings, BIOS detection...
The following partitions can't be recovered:
Partition Start End Size in sectors
> Mac HFS 598748676 1197087715 598339040
MS Data 822568208 978816271 156248064
Mac HFS 950993010 2110883513 1159890504 [ffFFFfFf6Sd6ffff
Mac HFS 951602807 5057119628 4105516822
MS Data 976773112 1268273136 291500025
MS Data 976773119 1141319671 164546553
Mac HFS 976773124 978042659 1269536
This is a list of partitions that cannot be recovered. Press Enter to Continue and you should see a list of viable and recoverable partitions.
Correct list:
Disk /dev/disk0 - 500 GB / 465 GiB - 976773168 sectors (RO)
Partition Start End Size in sectors
>D EFI System 40 409639 409600 [EFI]
D EFI System 46 409645 409600 [EFI]
D Mac HFS 409640 598748679 598339040
D Mac HFS 1253938 599592977 598339040
D Mac HFS 1254410 599593449 598339040
D Mac HFS 1255154 599594193 598339040
D Mac HFS 1256034 599595073 598339040
D Mac HFS 1256410 599595449 598339040
D Mac HFS 1257010 599596049 598339040
D Mac HFS 1257770 599596809 598339040
D Mac HFS 1258242 599597281 598339040
D Mac HFS 1258818 599597857 598339040
Structure: Ok. Use Up/Down Arrow keys to select partition.
Use Left/Right Arrow keys to CHANGE partition characteristics:
P=Primary D=Deleted
Keys A: add partition, L: load backup, T: change type, P: list files,
Enter: to continue
FAT32, blocksize=512, 209 MB / 200 MiB
There should be more.
ALL of them:
It wouldn't let me put them all so I just dumped them all here.
Sorry I have no idea what I'm doing 😝
I work 12 to 9 EST so I'll be back later to hopefully finish this
Back and ready to fix this!
Looked at the entire list. Very glad you did it this way, it saved me quite a bit of scrolling. 😉
This is a table I build to try and verify the partition table. The logic followed is explained below (this serves as documentation for future readers as well).
1. All these numbers are addresses of 512-byte sectors on disk.
2. The NTFS Size value occurs repeatedly, as does the GPT3 size value. This is because when a partition is moved, it leaves a 'vapor' trail behind (like a Jet contrail). This is the history of sector movement.
3. GPT3 is Recovery HD. It is between OS X and Bootcamp partitions. It has to be moved silently, anytime the user-visible partitions are moved. Hence you see a large number of entries.
4. Using the NTFS Size as the magic number, after the GPT3 entry (because it was originally after Recovery HD), the above table is built.
5. The last piece used is that this partition ends close to the end of the disk. Your disk is 976773168 sectors and the NTFS End is close to it allowing for backup GPT tables and sector alignment (the SEC GPT Table entries).
Q1. Does the NTFS Size (GB) come close to your original Windows partition. I use 1024 instead of the storage industry 1000 for kb/mb/gb/tb size calculations.
Q2. Was he resize amount close to 93+ GB?
If the answer to both questions is a yes, we can proceed further. The next step is get to this entry
D MS Data 685273088 976773112 291500025
in your list and use 'P' to list files. The output should similar to
Yes to both!
This is what I get when I press p:
MS Data 685273088 976773112 291500025
Directory /
>dr-xr-xr-x 0 0 0 4-Aug-2015 02:12 .
dr-xr-xr-x 0 0 0 4-Aug-2015 02:12 ..
dr-xr-xr-x 0 0 0 30-Apr-2015 08:11 $Recycle.Bin
dr-xr-xr-x 0 0 0 30-Apr-2015 08:43 .Trashes
dr-xr-xr-x 0 0 0 30-Apr-2015 19:22 Boot
dr-xr-xr-x 0 0 0 2-Jun-2014 08:25 Intel
dr-xr-xr-x 0 0 0 2-Jun-2014 09:41 MSOCache
dr-xr-xr-x 0 0 0 1-May-2015 18:31 PSFONTS
dr-xr-xr-x 0 0 0 13-Jul-2009 23:20 PerfLogs
dr-xr-xr-x 0 0 0 13-Jul-2015 19:17 Program Files
dr-xr-xr-x 0 0 0 28-Jul-2015 22:39 Program Files (x86)
dr-xr-xr-x 0 0 0 4-Aug-2015 02:11 ProgramData
dr-xr-xr-x 0 0 0 30-Apr-2015 08:03 Recovery
dr-xr-xr-x 0 0 0 30-Apr-2015 08:12 Scripts
dr-xr-xr-x 0 0 0 13-Jul-2015 19:04 System Volume Information
dr-xr-xr-x 0 0 0 30-Apr-2015 08:12 Users
dr-xr-xr-x 0 0 0 18-Jul-2015 12:51 Windows
-r--r--r-- 0 0 8192 2-Jun-2014 15:54 BOOTSECT.BAK
-r--r--r-- 0 0 2060 2-Jun-2014 08:20 RHDSetup.log
-r--r--r-- 0 0 383786 20-Nov-2010 22:23 bootmgr
-r--r--r-- 0 0 10 30-Apr-2015 07:54 casperImagingTarget
-r--r--r-- 0 0 8492101632 4-Aug-2015 18:22 pagefile.sys
Install GPT Fdisk (aka gdisk). Leave your Testdisk display and start a new Terminal Window. You need to use the following steps. If you see any error messages during the following steps, please stop and post back here with the error message. The following steps have values from your Testdisk output (and you can verify) in Steps 7 and 8. Please notice the'+' sign in step 8 (this is called offset notation). The text in parentheses is for informational purpose to describe the action being taken. Gdisk has one-character commands except when entering numbers.
Rebuild GPT4 using start/end offsets
This will delete and re-write the GPT partition info for /dev/disk0s4.
Rebuild MBR to match the new GPT information thus resetting the Hybrid MBR. Use defaults for other questions (like partition codes). The only values that need modifications are the Boot flags and step 10. Accept all other defaults that Gdisk offers. Please see thesample Q&A as an example. These steps can be repeated if you make a mistake before you get to Step 12, otherwise start from Step 1 for these steps. Step 6 has numbers which are typed with a space between the numbers.
Here is sample Q&A for this section. Please notice the Press Enter/Return.
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): Press Enter/Return
Set the bootable flag? (Y/N): N
Creating entry for GPT partition #3 (MBR partition #3)
Enter an MBR hex code (default AB): Press Enter/Return
Set the bootable flag? (Y/N): N
Creating entry for GPT partition #4 (MBR partition #4)
Enter an MBR hex code (default 07): Press Enter/Return
Set the bootable flag? (Y/N): Y
Test 1 - Does Bootcamp Volume show up in Finder?
Test 2 - Can you see files in Bootcamp Volume?
Test 3 - Can you select Bootcamp in System Preferences -> Startup Disk?
Test 4 - If Test 3 is successful, select Bootcamp and Click Restart.
I did all of this without any errors, but I didn't pass any of the tests at the end :/ What should I do? Should I still try to restart?
Please post the output of
sudo gpt -vv -r show /dev/disk0
sudo fdisk /dev/disk0
Here you go:
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 488281248 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC
488690888 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
489960424 195312664
685273088 291500025 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
976773113 22
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 0 0 2 - 25 127 14 [ 1 - 409639] <Unknown ID>
2: 03 25 127 15 - 1023 254 63 [ 409640 - 488281248] XENIX /usr
3: AB 1023 254 63 - 1023 254 63 [ 488690888 - 1269536] Darwin Boot
*4: 07 1023 254 63 - 1023 254 63 [ 685273088 - 291500025] HPFS/QNX/AUX
Please reboot and repeat the four tests. The Kernel has the old cached GPT tables.
I didn't see Bootcamp Volume anywhere, but "Windows HD Windows" is available to boot from in "Select Startup Disk"
Tried to partition hard drive and lost Windows
