Bootcamp missing EFI

Similar Questions

• Bootcamp missing after upgrade to El Capitan

  Hi, I want to run Windows so that I can remove the ADS 'files' associated with the files I transferred to a Windows computer for Mac Pro (mid-2010) I.

  After the upgrade to El Capitan (or perhaps Yosemite, as I haven't used bootcamp for awhile) bootcamp will no longer appear when I hold 'alt' when starting.

  I use NTFS for Mac OS X by Paragon and the bootcamp partition appears in the Finder, and the files are accessible.

  I have a backup time machine in Mac OS X I have an El Capitan USB drive Installer.

  Disk0 is an SSD that would 744,91 for OS X and 253 GB of bootcamp.

  I read the posts here who have a similar problem, but my system seems to have an additional problem with a partition OS X 'extra' appearing in the readings (see below) that should not be there.

  Bill

  $ sudo TPG - vv - r show/dev/disk0

  Password:

  See the TPG: / dev/disk0: mediasize = 1000204886016; SectorSize = 512; blocks = 1953525168

  See the TPG: / dev/disk0: PMBR to sector 0

  See the TPG: / dev/disk0: Pri GPT to sector 1

  See the TPG: / dev/disk0: GPT Sec at sector 1953525167

  start index size summary

  0 1 PMBR

  1 1 Pri GPT header

  2 32 table GPT Pri

  34 409600 1 part TPG - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

  262144 409634

  671778 1454904080 2 part TPG - 48465300-0000-11AA-AA11-00306543ECAC

  1455575858 6

  1455575864 1269512 3 part TPG - 426F6F74-0000-11AA-AA11-00306543ECAC

  1456845376 8

  1456845384 1269528 4 part TPG - 426F6F74-0000-11AA-AA11-00306543ECAC

  1458114912 1271456

  1459386368 494137344 5 part TPG - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

  1423 1953523712

  1953525135 32 table dry GPT

  1953525167 1 dry GPT header

  $ sudo fdisk/dev/disk0

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

  Signature: 0xAA55

  From end

  #: cyl hd s - cyl hd s id [Start - size]

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

  1: EA 1023 254 63 - 1023 254 63 [1-1953525167]

  02:00 0 0 0-0 0 0 [0-0] unused

  03:00 0 0 0-0 0 0 [0-0] unused

  04:00 0 0 0-0 0 0 [0-0] unused

  $ diskutil list/dev/disk0

  / dev/disk0 (internal, physical):

  #: NAME SIZE TYPE IDENTIFIER

  0: GUID_partition_scheme * 1.0 TB disk0

  1: disk0s1 EFI EFI 209.7 MB

  2: Apple_HFS MacintoshSSD 744,9 GB disk0s2

  3: Apple_Boot 650.0 MB disk0s3

  4: Apple_Boot disk0s4 650.0 MB

  5: Microsoft database Bootcamp 253,0 GB disk0s5

  List of cs $ diskutil

  No logical volume group CoreStorage found

  TESTDISK

  / Dev/disk0 - 1000 GB drive / 931 GiB - 1953525168 sectors (RO)

  Current partition structure:

  Start end partition size in sectors

  1 system EFI P 34 409633 409600 [EFI system partition]

  2 p Mac HFS 671778 1455575857 1454904080 [partition MacDrive HFS +]

  3 p Mac 1455575864 1456845375 1269512 Boot [Boot OS X]

  Mac Boot 1456845384 1458114911 1269528 4 p [Untitled]

  ATTENTION: number of cylinder/heads of 255 incompatibilities (NTFS)! = 1 (HD)

  ATTENTION: number of sectors per track of 63 incompatibilities (NTFS)! = 1 (HD)

  P 5 MS Data 1459386368 1953523711 494137344 [BOOTCAMP]

  / Dev/disk0 - 1000 GB drive / 931 GiB - 1953525168 sectors (RO)

  Start end partition size in sectors

  > System EFI 34 409633 409600 P [EFI]

  D Mac HFS 671778 1455575857 1454904080

  Data SM 965249025 1459386368 494137344 D

  D Mac HFS 1455576115 1456845642 1269528

  D Mac HFS 1456845657 1458115184 1269528

  D Mac HFS 1458115199 1459384726 1269528

  Data SM 1459386368 1953523711 494137344 D

  1. two recovery HDs indicate a fail OSX Upgrade.

  2 Please after the release of

  sudo dd if = / dev/rdisk0s5 account = 1 2 >/dev/null | hexdump - C

  3. What is the version of Windows on your MP?

• Using Bootcamp - missing partition

  Hello, I tried to install Windows 10 using bootcamp.

  It seemed to work very well, and then restarted in. X OS (under OS X 10.11.6) when I look for the partition, it is not found. I have a 500 GB hard drive and it is currently show only 370 available. Disk utility shows only a single drive. I tried to uninstall windows using boot camp, now it will ask only to install again but I have no more space in the partition.

  Would simply return to a partition, or if possible correctly install windows. I appreciate all help.

  Please after the release of the following OS X Terminal commands.

  diskutil list

  Cs diskutil list

• partition of bootcamp missing after the installation of El Capitan

  I disabled the integrity of the system by typing 'csrutil turn off' in the terminal, however I have not yet downloaded or rebuilt GPT Fdisk.      I can install GPT Fdisk now or do I have to re - turn on the integrity of the system?

  Thank you

  You can install the GPT Fdisk. Never 'building you' because it is an executable file. SIP can be reactivated later. Is there a specific problem you're trying to solve using Gdisk?

• Black screen after restart of the Bootcamp Assistant

  Hello

  I understand that 10 Windows is not supported with the MBP Late 2011 officially by Apple, I have it working earlier today and had no problems at all. I tried to add another partition for windows side so that I would be able to install Deep Freeze on Windows have a clean install of Windows every time that I boot in there and have all my programs and files on what would have been called "Local D.

  I deleted the Windows partition and I deleted the first player who had only 200 MB normally created from windows which I believe that holds the MBR for the old Windows Installer install. I tried to create 2 different partitions in disk utility and that the load bootcamp. He said well obviously not, because the reader must be around to do this, I did the road together again, put my Windows 10 disc in and let bootcamp.

  I wanted the reader to have 51 GB of bootcamp, that I would use 300 GB for the 'Local D' drive and the rest of the SSD 1 TB drive, I got OS X El Capitan. If at this point, I have X amount of GB to OS X and 51 GB will be used so that the wizard has done for me, once the wizard bootcamp is made, it will restart OS X and brings me to a gray screen. Normally, it's just going to continue in the installation of Windows, but it takes me to a black screen and does nothing else. Is this by far where can I fix? I even tried simply to launch the installation of Windows Installer directly from the drive itself without going through installation of bootcamp by holding ALT and selecting the drive and he finally took to the installation without any problem and now it goes to a black screen and does not change even.

  And for those wondering, no I do not get a flashing cursor in the upper left corner of my screen. Its completely black.

  PerfectStory wrote:

  I deleted the Windows partition and I deleted the first player who had only 200 MB normally created from windows which I believe that holds the MBR for the old Windows Installer install.

  You have deleted the EFI Partition from Mac. Not a very good idea. She does not hold the MBR. Your Mac uses a hybrid MBR. The MBR and the boot for Windows Manager are two separate entities.

  I tried to create 2 different partitions in disk utility and that the load bootcamp. He said well obviously not, because the reader must be around to do this, I did the road together again, put my Windows 10 disc in and let bootcamp.

  Disk utility is now considered an invalid drive due to a missing EFI partition. How did you again the reader "XV"? If you start from W10 in the optical drive, it is no Bootcamp involved more.

  I wanted the reader to have 51 GB of bootcamp, that I would use 300 GB for the 'Local D' drive and the rest of the SSD 1 TB drive, I got OS X El Capitan. If at this point, I have X amount of GB to OS X and 51 GB will be used so that the wizard has done for me, once the wizard bootcamp is made, it will restart OS X and brings me to a gray screen. Normally, it's just going to continue in the installation of Windows, but it takes me to a black screen and does nothing else. Is this by far where can I fix? I even tried simply to launch the installation of Windows Installer directly from the drive itself without going through installation of bootcamp by holding ALT and selecting the drive and he finally took to the installation without any problem and now it goes to a black screen and does not change even.

  And for those wondering, no I do not get a flashing cursor in the upper left corner of my screen. Its completely black.

  Please after the release of the following Terminal commands.

  diskutil list

  Cs diskutil list

  sudo TPG - vv - r see the/dev/disk0

  sudo fdisk/dev/disk0

  The "sudo" commands will prompt to enter your password, and there do not appear to come back. You can also see caution against improper use 'sudo' and the potential loss of data due to an "abuse" of the order.

• Disappeared from the EFI partition

  Hello

  I have a macmini end of 2012. I have the dual boot with Windows 8.1 and Yosemite. I also have a third FAT partition for data sharing.

  So, my setup looks like this, in Windows:

  

  The problem is that the EFI partition is gone, so I could do reach log Windows using an external backup drive, which also had a copy backup of the EFI partition. Yes, I basically cloned this drive for a long time and I've tested all the BONES on the external hard drive, and they were all bootable. Thus, using this trick, I managed to get into Windows.

  But now that I got under Windows I see as the missing EFI partition. I recently installed a customized for Win8.1 shell that makes it look like Win10. This software must have messed with the EFI partition, I don't see anything else that might have caused this.

  Just before the disc became starts plu I tried a few bar custom this custom, shell that uses the app mode of Win8.1 full screen, and when I tried to quit it by closing it, he suddenly threw an error message, I clicked on cancel, then the system froze.

  I pressed the power button to restart, then it's just stuck in a gray screen for minutes. Pressing ALT does not display the start menu. So, I concluded that the EFI must be wasted, so after the POWER test the computer does not find a bootable floppy. But I get no message, like the missing disk or stuff like that.

  I know that there are some tools that you can use to fix your EFI partition. It runs on Windows, because I'm not sure that I can boot into OS X Yosemite. In addition, as you can see the free space on drive D, where I installed Yosemite is not reported correctly. Which clearly indicates that there must be some data from corrupt volume information.

  Please install GPT Fdisk on the side Windows of https://sourceforge.net/projects/gptfdisk/ and your drive can be inspected.

  In most cases, EFI is usually invisible. The 200 MB in the first instalment on disk0 seems to be your EFI. It may be a problem with the MBR is structured.

• Missing Mac 8.1 Windows partition and Bootcamp

  So, I have seen very similar messages and followed several forums, but I can't yet figure out what to do next.

  I have 8.1 Windows on my Mac.  I wanted to repartition the Windows partition and make bigger it because I was running low on space, and the Windows partition is what I use it mostly for graduate studies.  About a year ago, I took an easy youtube video and used Mini Wizard Partition re-partition space and it worked perfectly.  I have found the same video and tried to repartition the Windows partition again, but apparently I royally screwed up.

  My BootCamp is not yet visible more in disk utility.  Under the partitions, there is an option called "disk0s4" greyed, but I'm not allowed to do something with it.  I can't verify or repair.  If I go to Applications, BootCamp Assistant is there, but he wants me to start the installation of BootCamp.  It was not an option to restart Windows more, and when I turned on with alt + market, Windows was not an option more.

  I followed this tutorial:

  http://nerdr.com/bootcamp-partition-lost-repairing-Mac-partitions/

  and when I restarted my Mac, restart Windows was an option. So I thought that I fixed it! EVIL.  My screen was black and said: 'Missing Operating System '.

  I downloaded EaseUS Data Recovery Wizard for Mac (because it was another suggestion), and I was able to recover and see the files on the NTFS disk0s4, so I'm quite positive, they have not all been completely erased.  Or at least the part of basic Windows is still there.  I can't recover the drive to anything, because it tells me that I will just be fitness on the same drive, and I honestly don't know how to retrieve these files will help with the side of the partition of things.

  I also used TestDisk and it seemed to find my missing partition, but in the middle of analysing it, it says something like "disk too small."  After further research, I went through and took only the most recent score that seemed to be deleted with NTFS, and when you are trying to do, it would allow me to make a 'logic' partition because he said something in red, as 'bad file.'

  My Mac still works perfectly, but I'm terribly need to recover my windows.  All suggestions are useful!  Thank you!

  Last login: Wed Mar 9 16:30:28 on ttys001

  Anna-Owenss-MacBook-Pro: ~ acowens1$ sudo gdisk/dev/rdisk0; "exit";

  GPT fdisk (gdisk) version 1.0.1

  WARNING: Open with shared lock devices will not have their

  table partition automatically reloaded!

  Scanning partition table:

  MBR: hybrid

  BSD: absent

  APM: absent

  TPG: present

  Found a valid GPT with hybrid MBR; using GPT.

  Command (? for help): p

  Disk/dev/rdisk0: 625142448 sectors, GiB 298,1

  Logical sector size: 512 bytes

  Identifier (GUID) of disc: 0000429B-368F-0000-CB2D-000003440000

  Partition table contains up to 128 entries

  First usable sector is 34, last usable area is 625142414

  The partitions will be aligned with the boundaries of sector 8

  Space free total is 277435021 areas (132,3 GiB)

  Starting number (sector) end (sector), Code name of size

  409639 40 1 200.0 MiB EF00 EFI system partition

  2 409640 268314855 127.7 giB customer AF00

  3 268314856 269584391 619.9 MiB AB00 Recovery HD

  4 547018752 625141759 37.3 giB 0700 BOOTCAMP

  Command (? for help): r

  Recovery/processing command (? for help): o

  Size of the disk is 625142448 areas (298,1 GiB)

  MBR disk identifier: 0x0000711C

  MBR partitions:

  Code of State sector Boot start end sector number

  1 1 547018751 primary 0xEE

  2 * 547018752 625141759 0 x 07 elementary school

  Recovery/processing command (? for help): h

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

  Simply press enter at the prompt below and your partition table MBR will be

  be intact.

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

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

  Partition of EFI GPT (0xEE) place first in the MBR (good for GRUB)? (Y/N): y

  Create entry for the #2 GPT partition (partition MBR #2)

  Enter a hex code MBR (default AF): n

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

  Create entry for the #3 GPT partition (partition MBR #3)

  Enter a hex code MBR (default AB):

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

  Create entry for the #4 GPT partition (partition MBR #4)

  Enter a hex code MBR (default 07):

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

  Recovery/processing command (? for help): o

  Size of the disk is 625142448 areas (298,1 GiB)

  MBR disk identifier: 0x0000711C

  MBR partitions:

  Code of State sector Boot start end sector number

  1 1 409639 primary 0xEE

  2 409640 268314855 primary 0 x 01

  3 268314856 269584391 primary 0xAB

  4 * 547018752 625141759 0 x 07 elementary school

  Recovery/processing command (? for help):

  I followed the suggestions of the post, but I was not allowed to use the option of 3 4 5 or rather 2 3 4 type, because #5 has been "too big or did not exist."  I'm at the point where I should be typing w (write) but I won't enter this command if it is not correct.

• Bootcamp Partition is corrupted or missing.

  Hello

  Update to windows 10 birthday and it seems that my bootcamp partition disappeared completely, I have a fusion of 2 TB drive (end of 2015 iMac) with partitions divided about 1 TB each. Bootcamp cannot see the windows partition more able to reclaim that space. OSX (10.11.6) works well however as a 1 TB fusion drive. Disk utility only sees the drive 1 TB as well.

  Either way, I want to recover Windows, or reclaim space for OSX without a reinstall full Mac OS x if it is possible? (Will reinstall windows if I can reclaim space)

  Bootcamp:

  The startup disk cannot be partitioned or restored to a single partition.

  The startup disk must be formatted in a single volume in Mac OS extended (journaled) or already partitioned by Boot Camp Assistant to install Windows.

  diskutil list:

  / dev/disk0 (internal, physical):

  #: NAME SIZE TYPE IDENTIFIER

  0: GUID_partition_scheme * GB 121,3 disk0

  1: disk0s1 EFI EFI 209.7 MB

  2: Apple_CoreStorage Macintosh HD 121.0 GB disk0s2

  3: disk0s3 Apple_Boot Boot OS X 134,2 MB

  / dev/disk1 (internal, physical):

  #: NAME SIZE TYPE IDENTIFIER

  0: GUID_partition_scheme * TB 2.0 disk1

  1: EFI EFI 209.7 MB disk1s1

  2: disk1s2 Apple_CoreStorage Macintosh HD 995.9 GB

  3: disk1s3 Apple_Boot Recovery 650.0 MB HD

  4: Windows Recovery 471.9 MB disk1s4

  / dev/disk2 (internal, virtual):

  #: NAME SIZE TYPE IDENTIFIER

  0: Apple_HFS Macintosh HD + 1.1 TB disk2

  Logical volume on disk0s2, disk1s2

  F717685A-6F46-4968-8E1D-3D47090CC3EB

  Fusion unencrypted drive

  CS diskutil list:

  CoreStorage groups of logical volumes (1 found)

  |

  + Logical Volume - Group D404E209-D80B-4B54-BA45-922AB50DF5DB

  =========================================================

  Name: Macintosh HD

  Status: online

  Dimensions: 1116856176640 B (1.1 TB)

  Free space: 307200 B (307,2 KB)

  |

  +-Physical volume B7A8EF7F-FD57-4F5F-B74C-8E7AF72D7F3B

  |   ----------------------------------------------------

  |   Index: 0

  |   Disc: disk0s2

  |   Status: online

  |   Dimensions: 120988852224 B (121.0 GB)

  |

  +-Physical volume 33D06DE3-8375-496A-9BDA-9AB805347D8E

  |   ----------------------------------------------------

  |   Index: 1

  |   Disc: disk1s2

  |   Status: online

  |   Dimensions: 995867324416 B (995,9 GB)

  |

  +--> Logical volume family 9CADBF9D-4721-4C89-B0B9-C2F2BC68DCD3

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

  Encryption type: no

  |

  +--> Logical volume F717685A-6F46-4968-8E1D-3D47090CC3EB

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

  Disc: disk2

  Status: online

  Size (Total): 1111000612864 B (1.1 TB)

  Reversible: no

  Name: Macintosh HD

  Volume name: Macintosh HD

  Content indicator: Apple_HFS

  LVG Type: Fusion, sparse

  got sudo - vv - r show disk1:

  See the TPG: disk1: mediasize = 2000398934016; SectorSize = 512; blocks = 3907029168

  See the TPG: disk1: PMBR to sector 0

  See the TPG: disk1: Pri GPT to sector 1

  See the TPG: disk1: GPT Sec at sector 3907029167

  start index size summary

  0 1 PMBR

  1 1 Pri GPT header

  2 32 table GPT Pri

  34 6

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

  409640 1945053368 2 part TPG - 53746F72-6167-11AA-AA11-00306543ECAC

  1945463008 1269536 3 part TPG - 426F6F74-0000-11AA-AA11-00306543ECAC

  1946732544 1959372800

  3906105344 921600 4 part TPG - DE94BBA4-06D1-4D40-A16A-BFD50179D6AC

  2191 3907026944

  3907029135 32 table dry GPT

  3907029167 1 dry GPT header

  With the above, I am sure that installing windows is (or was) the entry that starts in 1946732544 and size 1959372800 but now has no content.

  Any help with this would be most appreciated.

  You don't have a valid drive for the entrance of Bootcamp. Did you get errors during the upgrade of W10?

• Partition missing at startup Bootcamp

  I have a Mid 2012 Macbook Pro and I can't seem to be able to start on my Windows partition. I've been running Windows 10 (Windows 7 Pro upgrade) on a 1 TB HARD drive. This problem only comes to happen, after starting to install Bootcamp on another SSD installed in my optical Bay. List of events:

  1. Replace my optical drive with an SSD using an Optibay MSE adapter
  2. Winclone to create an image of my current bootcamp partition
  3. Downloaded an ISO of Windows 10 image on my bootcamp partition
  4. The Boot Camp Assistant, used to create a Setup disk with the drivers on a USB key is empty
  5. Wizard Boot Camp, trying to install Windows 10 on the new SSD
  6. Installation is complete, but on reboot, started to black white screen
  7. Attempt to restart and booted to a black screen with flashing underscore concerns
  8. Initialized to Mac and shaped something was not right, so reformatted the new SSD to FAT
  9. Tried to boot into the old partition Boot camp, only to start on white screen
  10. Disconnected from other SSDS, as suspected, he was causing problems (do not do anything)
  11. Attempt to restore the winclone image of old partition backup
  12. Winclone restoration resulted in creating an EFI disc, as well as what looks like my old drive BOOTCAMP.
  13. Tried to restart in the TRAINING camp from boot disk, which brings me to a black screen with flashing line of underscore.

  This brings me to now. I have the feeling that I messed up the partition table. When you hold the option at boot, I am only offered Macintosh HD, EFI startup and recovery - 10.10. Any idea what I can do to successfully start windows?

  chke wrote:

  Wizard Boot Camp, trying to install Windows 10 on the new SSD

  Installation is complete, but on reboot, started to black white screen

  Windows Setup requires several reboots. Did the restart to complete it successfully? The pilots of the BC did install correctly?

  Installation is complete, but on reboot, started to black white screen

  Attempt to restart and booted to a black screen with flashing underscore concerns

  EFI boot that is used to install on the SSD drive? Your subsequent statement on EFI boot indicates that is the case, but need to confirm.

  Initialized to Mac and shaped something was not right, so reformatted the new SSD to FAT

  Tried to boot into the old partition Boot camp, only to start on white screen

  What is expected. Each disc has it's own independent EFI. BCA is updating the EFI to disk0, pointing to the SSD, which deleted you. It is impossible to boot EFI Windows since the 1 TB HARD drive. BIOS/MBR is a completely different path.

  Disconnected from other SSDS, as suspected, he was causing problems (do not do anything)

  What is still expected. See previous explanation.

  Attempt to restore the winclone image of old partition backup
  Winclone restoration resulted in creating an EFI disc, as well as what looks like my old drive BOOTCAMP.

  Winclone has the ability to restore EFI or MBR. It depends on the model. Your specific model supports both approaches. You can check this by using the Applications-> utilities-> Console and type "Winclone' at the top of the search page to the right area, then check the logs. She restored EFI, which is why you see Boot EFI when using Alt/Opt.

  Tried to restart in the TRAINING camp from boot disk, which brings me to a black screen with flashing line of underscore.

  This because EFI boot is now the problems causing the GPU. Yours is a 13 inch or a MBP 15 - in?

• Partition missing Bootcamp after sleeping

  Hi guys,.

  I have the following problem. I have a Macbook Pro with OS X El Capitan 10.11.5 on it. I have multi boot, with 8.1 Windows it still works well, but I was in need of some extra HARD drive space on my OS X partition, so I was sleeping with a partitioner of third party and deleted by mistake a 200 MB required (I think than EFI) partition. After that, I was not able to boot to OS X, only point 8.1 Windows

  After a while of playing with it, I suddenly could start under OS X new. But, when I press the Option key at startup, my Bootcamp partition has now disappeared all of a sudden. When I went back to OS X and checked with disk utility, I could see the Bootcamp partition. Also in the floppy start, but when I chose the Bootcamp partition as boot drive and the Macbook restarted, I got the 'no such device' error while trying to boot Windows.

  So, I completely messed up something. I tried Windows recovery (reboot), but after this was not a success either, the whole Bootcamp partition is now gone when I check the disc utilities. So, maybe someone can help? Here are a few screenshots:

  

  

  

  

  Thank you very much in advance!

  Make no mistake.

  The partition GUID type is incorrect. What is the year/model of your Mac?

  Please download GPT Fdisk from https://sourceforge.net/projects/gptfdisk/ and install it. It will help you to correct the GPT.

• Bootcamp deleted missing partition, but can not recover the partition space

  Tried to install 10 Windows via Bootcamp on my Mac. First, I formatted the bootcamp partition. Then I got the following message: could not create a new partition or locate an existing one. For more information, see the Setup logs files.

  

  I tried five times with Bootcamp installed Windows 10. Then I advice to delete the partition and create a new. So I did. Still did not work. When I rebooted my mac, 50 GB missing as you can see here:

  

  I tried to restore the partition, but there is no possibility to do so, as you can see here:

  

  I read so many posts that I don't know what to do anymore. I don't mind factory reset my macbook, but it will restore my lost partition as I probably only erase the 450 GB instead of the 500 GB SSD?

  I read in several messages (this one in general: Bootcamp Partition missing during startup) that this information might be required, so I added from the outset:

  diskutil list:

  

  Cs diskutil list:

  

  sudo TPG - vv - r see the/dev/disk0:

  

  sudo fdisk/dev/disk0:

  

  
  

  I hope someone can help me restore my 50 GB, I lost. Even once, I do not fear factory reset my macbook if that's the best way to solve this problem!
  

  Can you use doesn't have windows via bootcamp 8.1 installation as reference to reclaim your disk space?

• Bootcamp (Win7) missing after upgrade to El Capitan

  My iMac early 2009 (one of the 4 Macs in my office) has lost his Boot Camp partition after upgrade to OS 10.11. the 1 TB drive keeps 783 GB as Untitled in disk utility, but the icon is missing from the office and it does not appear in the start window options.  I don't want to wipe o as Win 7 teacher was OEM and I Revit and Autocad licenses on it.  I can do something so he relocated it?  I have the same problem with my Macbook Pro of retina.

  Following earlier suggestions of solitaire T I ran the commands it suggests.  These are the outputs if anyone knows what they mean:

  Last login: Friday, June 3 09:41:15 on ttys000

  mkdir: /Users/fredbatterton/.bash_sessions: permission denied

  Contact: /Users/fredbatterton/.bash_sessions/FCC0EEE2-2E12-4555-A81F-8928ED3C4940.histor ynew: no such file or directory

  Mies-Van-Der-Rohe: ~ the fredbatterton list $ diskutil

  / dev/disk0 (internal, physical):

  #: NAME SIZE TYPE IDENTIFIER

  0: GUID_partition_scheme * 1.0 TB disk0

  1: disk0s1 EFI EFI 209.7 MB

  2: Apple_HFS Macintosh HD 216,2 GB disk0s2

  3: disk0s3 Apple_Boot Recovery 650.0 MB HD

  4: Microsoft data base 783,1 GB disk0s4

  Mies-Van-Der-Rohe: ~ list of cs fredbatterton$ diskutil

  No logical volume group CoreStorage found

  Mies-Van-Der-Rohe: ~ fredbatterton$ sudo TPG - vv - r show/dev/disk0

  See the TPG: / dev/disk0: mediasize = 1000204886016; SectorSize = 512; blocks = 1953525168

  See the TPG: / dev/disk0: MBR suspicious to sector 0

  See the TPG: / dev/disk0: Pri GPT to sector 1

  See the TPG: / dev/disk0: GPT Sec at sector 1953525167

  start index size summary

  0           1         MBR

  1 1 Pri GPT header

  2 32 table GPT Pri

  34 6

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

  409640 422357176 2 part TPG - 48465300-0000-11AA-AA11-00306543ECAC

  422766816 1269536 3 part TPG - 426F6F74-0000-11AA-AA11-00306543ECAC

  424036352 1529487360 4 part TPG - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

  1423 1953523712

  1953525135 32 table dry GPT

  1953525167 1 dry GPT header

  Mies-Van-Der-Rohe: ~ fredbatterton$ sudo fdisk/dev/disk0

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

  Signature: 0xAA55

  From end

  #: cyl hd s - cyl hd s id [Start - size]

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

  1: EA 1023 254 63 - 1023 254 63 [1-409639] < unknown ID >

  2: AF 1023 254 63 - 1023 254 63 [409640-422357176] HFS +.

  3: AB 1023 254 63 - 1023 254 63 Boot Darwin [422766816-1269536]

  4: 0C 1023 254 63 - 1023 254 63 FAT32L Win95 [424036352-1529487360]

  Mies-Van-Der-Rohe: ~ fredbatterton$

• Help - my ssd is missing 40 GB, after that I tried to install Bootcamp

  Here's the situation. A few weeks back, I tried to install bootcamp and windows. He is not well, but don't forget windows at the moment.

  The problem is that I have partitioned ssd in my Macbook Air, creating a new windows 40 GB in size. Win installation did not work, but now I can't retrieve the 40 GB. In fact, it is invisible. I thought I could fix it myself, I waited for this weekend when I have time. I have superdupered a copy of my ssd disk external and tried to reformat the entire ssd, intending to copy the contents of the external drive on the ssd. It did not work.

  Disk utility could not erase my ssd. The message was that there was a discrepancy with the size of the disk and who was who.

  I have no more ideas. Can anyone suggest how I can get back my missing 40 GB?

  A big thank you to all those who can help.

  If you used boot camp to partition the drive you would use to remove the windows partition. Rerun the bootcamp and choose Delete bootcamp partition.

• Partition missing Bootcamp after the upgrade to EL CAPITAN

  Hello

  Finally decided to upgrade MAVERICKS to EL CAPITAN.

  Unfortunately, I was not checking the compatibility of Bootcamp with Windows 7 running on it.

  After upgrade, only the OSX partition is visible (hold ALT key at startup).

  The boot partition on board still shows the Bootcamp partition, but I can't find/start with that.

  Read a few threads, it seems that EL CAPITAN using a BIOS that is more recent (EFI?) and Bootcamp + Win7 would require always old BIOS (MBR?)?

  I decided to use a Timecapsule backup back the MAVERICKS - which worked well.

  However, the Bootcamp partition is always considered to be NON-BOOTABLE.

  Now I'm out of ideas.

  Can someone help me so that I can start over the Windows, upgrade to Win10 image and finish the job?

  Thank you

  TC

  I also have the same problem - here to see the result

• Missing icon in the bootcamp startup parameters

  Hello

  Installed Windows 10 the right way through Bootcamp with a bootable usb key and all that.

  Now I miss the settings icon where I chose this drive to boot from.

  All I get is El Capitan. No windows available.

  I know that I can hold down the Alt key at startup and choose the drive, but I want to have the choice in settings.

  It works fine the opposite effect. Windows to OS...

  Thank you

  / M

  What third-party NTFS software you have installed on the side of OSX?