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Windows 10 Partition Disappeared After Installing El Capitan

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@Loner T — seems you have helped several others on this issue and hope you can help me through it too.  I have an early 2013 MBP with a 500 GB SSD.  I allowed the upgrade to El Capitan and like others this made the boot camp partition disappear.   Holding the option key when booting only displays the option to boot into OS X.  Here’s what I’ve done so far:

 

– SIP is disabled.  Confirmed after rebooting normally by typing csrutil status

– Tried to make the other partition bootable by using your instructions on

   — fdisk -e /dev/disk0

   — p

   — setpid 4

   — 07

   — flag 4

   — p

   — w

   — y

After quitting, I rebooted and hit option.  Windows now appears when I hold option down, but when selecting it I get the error “Operating System Missing”

Here’s the output from all of the other commands:

diskutil list gives:

/dev/disk0 (internal, physical):

   #:      TYPE NAME                                              SIZE       IDENTIFIER

   0:      GUID_partition_scheme                            *500.3 GB   disk0

   1:      EFI EFI                                                       209.7 MB   disk0s1

   2:      Apple_CoreStorage Macintosh HD            300.0 GB   disk0s2

   3:      Apple_Boot Recovery HD                          650.0 MB   disk0s3

   4:      Microsoft Basic Data                                  101.0 GB   disk0s4

/dev/disk1 (internal, virtual):

   #:                       TYPE NAME                              SIZE       IDENTIFIER

   0:                  Apple_HFS Macintosh HD           +299.6 GB   disk1

                                 Logical Volume on disk0s2

                                 DAED883D-1E3E-48A7-A986-A2C2E5483BE7

                                 Unencrypted

diskutil cs list displays

Windows 10 Partition Disappeared After Installing El Capitan

gpt -vv -r show /dev/disk0 displays:

Windows 10 Partition Disappeared After Installing El Capitan

sudo fdisk /dev/disk0 gives:

Windows 10 Partition Disappeared After Installing El Capitan

I figure all this means I have a lost partition as you have described to others.  I downloaded Testdisk and gdisk.  Testdisk output:

Windows 10 Partition Disappeared After Installing El Capitan

Running a Quick Scan on Test disk and see these unrecoverable partitions (dumb question does that mean these are lost for good or that they are good and don’t need to be recovered?):

Windows 10 Partition Disappeared After Installing El Capitan

Then Continuing:

Windows 10 Partition Disappeared After Installing El Capitan

Selecting P here produces:

Windows 10 Partition Disappeared After Installing El Capitan

Are these the values I can use in steps 7 and 8 in this post?


boot comp haw to delete partition

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boot comp haw to delete partition

How to rename a bootcamp partition in El Capitan

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I have used BootCamp assistant to successfully load Windows 10 on my Macbook Air.  It has named the Bootcamp partition “Untitled” and I would very much like to change it.  HOW do i do this?  I have tried everything that...
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windows partition not showing

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I had windows running perfectly and yesterday I decided to create a third partition and since I created it the windows partition is not showing anymore, I can only see it in the disk utility but I can’t access to...
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Help! Windows 10 doesn’t boot anymore after partition.

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I have a MBP mid12 13″, It was running windows and el captain fine until I added a partition to mac side. now windows won’t boot up. I need Windows for my engineering programs.

Please help. Thanks

No Audio on Windows 10 Partition

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I installed Windows 10 on my 2015 Macbook Pro.

Followed the Bootcamp instructions and all when smoothly.

 

I quickly noticed something seemed, quiet.

There was no audio when I was using the Windows 10 portion of the hard drive.

 

There seems to be no software issues as the audio says it is connected and fine and there seems to be no hardware issues as it works fine on the Mac partition.

 

The red light is on inside the AUX port.

I tried plugging in external headsets to see if that would help with no luck.

 

Any ideas?

 

Thank you

Find my Mac saying recovery partition required

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OSX 10.10.5

MacBook Pro

 

To attempt to get 1Password synching again I was instructed to sign out of iCloud. Upon signing back in I can’t use Find My Mac as a recovery Partition is required.

As this is on my laptop, I’d like to have this feature. Find my Mac can be switched on on my Mac pro though, which is kinda pointless as it doesn’t have WiFi.

 

Anyone know how to fix?

 

Thanks!

No start volume. set partition table to ‘default’ manually?

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Hello,

 

I was installing Ubuntu for dualboot usage with El Capitan. The installation aborted; after reboot I couldn´t go back to OS X start volume, as if there was nothing installed. Recovery mode (CMD + R) is possible. Booting with Live-Ubuntu stick is also possible, there the data structure on the Mac partition is also visible, so it should still be there. ‘First Aid’ in Disk Utility tells me that something is wrong with the partition table, what may cause troubles with the start volume… So, is there a possibility to manually correct the partition table (without testdisk) in the recovery mode to be able to start from OS X again? I´d like to avoid re-install it, since all data and software so far seems still to be there and ok – just setting back the partition table.

 

Thanks!


Can’t Find/Remove Bootcamp Partition

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Tried to use bootcamp to create a partition for my copy of windows I just got. It was hanging for a while creating the partition, so I force-quitted it like multiple users online have been told to try to resolve the situation. Tried then to find and erase the partition it tried to create. Ended up crashing disk utility or something so I force rebooted the computer to see if that helped. Now I cannot find the partition on disk utility at all, it shows the disk as having 1TB less than it should (the size of the partition I created or tried to create), and it does for some reason show up when I press “alt” on my keyboard on the computer.

 

Is there a way to remove that partition and try this all again without completely reformatting my hard drive and restoring from backup? I have a backup from time machine, I just don’t want to wait 12 hours for 1 TB of data to transfer….

Upgraded to Yosemite and now my Bootcamp Partition is not being recognized

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A couple weeks ago I re-partitioned my mac and bootcamp partitions adding room from my mac side to my windows side and then today I upgraded to Yosemite.  Now my windows partition doesn’t appear as a bootable option and on the mac side and when I’m on my mac side and I use the DiskUtility it doesn’t recognize a Bootcamp partition but when I click on the hard drive it shows a Macintosh HD, Free Space, and Untitled which is the size of my Windows partition.  I’ve followed some of the other threads on here about this issue but I can’t seem to get anywhere.  Can anybody help?

How can I use Windows 10 with yosemite when it deletes my bootcamp partition?

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Yosemite and later deletes or renders inaccessible my bootcamp partition. Thus I didn’t upgrade past Mt. Lion. Now I am receiving the upgrade prompt from Microsoft to upgrade to Windows 10. But Apple says to upgrade OSX first. But the newest OSX makes Bootcamp partition inaccessible….

 

or did Apple fix the bootcamp partition issue?

Partition Issue

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I have a 3tb drive in in my 27inch Imac. I have, to date, used about 1.2tb of the drive.

 

I was creating a second partition and had a power loss during the partitioning. The computer booted up without issue and is working fine. The new partition was not created but the hard drive space that I was allocating for the partition has been taken. The partition does not show up on the desktop nor does it show up in Disk Utilities.

 

Is there a way that I can remove the unseen partition or at least take back the hard drive space? I could always restore the backup I made before the partition attempt, but I’d rather not, if I can help it.

How do I use the usb as a partition on Boot camp assistant?

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I am trying to install Windows 10 in my iMac 10.11 El Capitan. I just bought it rand new from Best Buy. And i bought Windows 10 from the Microsoft website. I downloaded the ISO image and even got the key and the usb. Only problem i am running into is that when I launch Boot camp Assistant it doesn’t let me use the usb as the partition. Keep in mind i am using a 16gb usb for this. I need help knowing how to use the usb as a partition.

i don’t have "download software" option available in boot camp, only restore partition

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as said in title, so i won’t be able to fix the no sound problem

boot camp partition takes too long

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Boot camp partitioning seems to hang up.   What should I do?


Bootcamp not bootable after shrinking Macintosh HD partition

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Hello. I’ve had bootcamp installed and working flawlessly for over two years, but I needed some more space on my Windows partition. I shrank the Macintosh HD partition to be able to create a new partition which with I merged with the Windows partition. Windows worked fine after this, but the Macintosh HD partition wouldn’t boot or show at the boot menu. I used the recovery tool in the Mac’s recovery partition to verify and repair the Macintosh HD partition, which didn’t succeed. It pretty much said I had to backup my files and reformat etc. Suddenly today, it was the other way around. The Macintosh HD partition did show on the boot menu and booted fine, but the Windows partition didn’t show on the boot menu, but here’s the weird part: the temporary partition I created to merge with the Windows partition showed up as a separate partition again (even though it is merged with the original Windows partition). Anyway, I followed the steps of this fix: Repairing Boot Camp after creating new partition and both partitions (Windows now showing as one partition) showed up on the boot menu, but when trying to boot Windows it showed a black screen with a blinking hypen, not able to boot. I booted from the USB stick I used to install Windows 7 to use the system startup repair tool, but it said that it could not fix the issue automatically because (in the log) the “boot manager is missing or corrupt”. Please note that with the fix: Repairing Boot Camp after creating new partition I did it to the original partition disk0s5 first, and then also to the temporary partition disk0s4 after to see if that was the problem. I’ve spent so many hours on this now, that I just want to do the easiest option which is to delete the Windows partitions and recreate Bootcamp, but I’m not able to do anything with the greyed out partitions in Disk Utility.Bootcamp not bootable after shrinking Macintosh HD partition

disk0s1: I guess one of the recovery partitions of OSX (?)Macintosh HD: Is working fine right now.

win new: the temporary partition which I merged with disk0s5.

disk0s5: Original Bootcamp/Windows partition.

PCIe SSD Partition or Not

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So I’m ordering a 512GB Samsung SM951 and will try it out in a 2008 3,1 cMP. I’ve read where people suggest partitioning around 50GB of free space “for the SSD Controller”, others say no need to partition just to always make sure there’s more than 10% left on the drive.

 

Any suggestions?

How do i partition my iMac 5k Retina Late 2015 1 TB hard Drive?, How do i partition my iMac 5k Retina Late 2015 1 TB hard Drive?

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I’m buying a new iMac 5k Retina Late 2015 with El Captian. I need to know the steps to Partition my 1TB hard drive (not fusion, not SSD) into 2 drives, one for iOS and remaining for other activities. All...
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Bootcamp Partition DISAPPEARED, not in disk utility

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TL:DR: 1TB iMac shows 500GB mac partition, the other 500GB are missing and I need them back

 

Hi, I used to have my 1TB iMac partitioned in halves of 500GB aprox. one for Mac one for Windows with Bootcamp. Windows was working slow and bad so I decided to clean and do the partitioning again. So in mac, I opened “Bootcamp” and selected the erase windows option, but it said “Your disk could not be restored to a single partition.”.

 

So I then went to disk utility and to my surprise, Bootcamp partition was GONE, but Mac partition still weighted 500GB so there are 500GB completely missing!. I took some screenshot for you to see. Disk utility says my mac partition is 999GB but with 50GB available and 410GB used, so it doesn’t add up. AND “Finder” and “About my mac” say that my Machintosh HD is  470GB.

 

I NEED my Windows partition working for my work! I wanted to divide again my 1TB by two, to reinstall windows, but my mac thinks there are only 500GB in my machine somehow!

 

Please  HELP ME!

 

SOME SCREENSHOTS

 

Bootcamp Partition DISAPPEARED, not in disk utility

Bootcamp Partition DISAPPEARED, not in disk utility

format usb as single fat partition on el capitan

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hi trying to install windows 7 on imac  getting message saying format the usb as single partition

i am on el capitan and the disk utility has changed on this so i am stuck can anyone guide me please.

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