Repairing Boot Camp after creating new partition

⚠EDIT: Ignore this. Look at Loner T's latest post. I don't know how Apple Discussions work. 😊

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Can't boot into windows after resizing partitions

Thanks Guys

Hi Chris,

I have been following your solution. As you said to report back. at this point. I didnt see the star at 07. Can you please help me and let me what I need to do from here to login into windows.

Command (? for help): p

Disk /dev/disk0: 490234752 sectors, 233.8 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): 501C1C66-4C7A-480F-BF6A-A1C30B5CD766

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 263013 sectors (128.4 MiB)

Number Start (sector) End (sector) Size Code Name

1 40 409639 200.0 MiB EF00 EFI System Partition

2 409640 329296167 156.8 GiB AF05 Customer

3 329296168 330565703 619.9 MiB AB00 Recovery HD

4 330565704 390365183 28.5 GiB AF00 Untitled

5 390627328 490233855 47.5 GiB 0700 BOOTCAMP

You should have two entries. One type EE, one 07, with the 07 entry marked with * under Boot. If you don't, report back. If you do, write out the update partition information, and hope a power failure doesn't occur for the next few seconds...

Many thanks to Jeroen for suggesting the WinClone route, worked like a charm!! I was lucky I could still access my bootcamp with Parallels but was getting, "Your PC/Device needs to be repaired" when trying to boot directly to Windows after attempting to increase the Windows partition w/ disk utility (seems to be a common problem, you'd think they'd build in a warning of some kind!)

My Recovery drive is still screwed up, but it'll have to wait another day.

I am noticing a discrepancy in Windows reporting the size of the drive after the restore:

My original drive size was ~250 GB and I increased it to 350 GB. "This PC" reports the old size of the drive but the disk manager shows the new and old sizes, Jeroen, did you have this issue?

hi Loner ,

I am having trouble too. similar but instead mac partition is not working. plz follow the link to the discussion.

cheers and thanks in advance.

Suraj

Mac OS partition and Recovery Partition not showing up in startup manager

I wanted to follow up on my last post for posterity's sake.

I was able to resize Windows' filesystem to match its partition size by using a feature in Winclone. After restoring my backup to the bootcamp partition, I selected my bootcamp partition from the Sources list, then I went to Tools > Expand Windows (NTFS) Filesystem and Winclone expanded the filesystem to match the partition I had set with the Bootcamp Utility.

Another issue I had after incorrectly resizing the Windows partition incorrectly the first time w/ Disk Utility and blowing up Windows was that my recovery partition was unusable and/or not available from the Boot Manager menu (hold option at startup), replaced by an entry called "EFI Boot" that, when selected would try to boot and cause the MBP to crash/shutdown. On top of that, holding Command + R when booting would skip the onboard recovery and go right to internet recovery which half the time would load recovery and half the time would result in the prohibited symbol. Inspecting diskutil revealed that my recovery partition was totally gone:

I went to get help at the genius bar and via the phone technical support and both didn't help me. I ended up finding a blog that led me to a tool/script, that, in conjunction with the El Capitan installer, will restore the recovery partition:

http://www.hongkiat.com/blog/recovery-partition-os-x/

http://musings.silvertooth.us/2014/07/recovery-partition-creator-3-8/

Hi to all.. this whole workout worked for me.. but my mac is on el capitan... so when i gave the write command i got an error... this can be solved by using the command : csrutil disable

to do this you must boot in recovery mode..

for some reason i wasn't able to boot in recovery mode .. so i started from a bootable backup drive...

once booted i did all steps as written in this treat... and now i have 3 partitions OS X/Bootcamp and DATA fully working...

Thank you all..

I came across this thread while searching for a solution to a problem I'm having, but it seems like the solutions given to others might be specific to them and I want to ensure I don't mess anything up further. If anyone can help walk me through how to fix this, I would really appreciate it.

Basically, I wanted to increase the size of my Windows 10 bootcamp partition so I could try out the free Overwatch open beta going on right now. So I went into Disk Utility and tried to increase the size of the bootcamp partition, but it wouldn't let me. It would let me create a new empty partition, though, so I thought I could work with that. So I made a new 5 GB partition, but once I tried rebooting into Windows, it wouldn't work. I don't get the option to select Windows at boot anymore. It just lists Macintosh HD at the only option. So I went back to Disk Utility and deleted the new partition I had made, but it's still not allowing me to boot into Windows.

Here is the Terminal output for the commands you listed:

$ diskutil list

/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 388.4 GB disk0s2

3: Apple_Boot Recovery HD 650.1 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 111.0 GB disk0s4

/dev/disk1 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD +388.1 GB disk1

Logical Volume on disk0s2

BADA0F47-13F7-4920-ABB4-2ED458405A0F

Unlocked Encrypted

$ diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group E5C14C1F-1E21-4D66-98AC-5AE7969E32E1

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

Name: Macintosh HD

Status: Online

Size: 388418744320 B (388.4 GB)

Free Space: 6533120 B (6.5 MB)

|

+-< Physical Volume 7E003CB6-6606-4617-BB5D-2082F61E64D7

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 388418744320 B (388.4 GB)

|

+-> Logical Volume Family 822B8A7C-F4C8-4EBD-954A-45D43FFC4388

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

Encryption Type: AES-XTS

Encryption Status: Unlocked

Conversion Status: Complete

High Level Queries: Fully Secure

| Passphrase Required

| Accepts New Users

| Has Visible Users

| Has Volume Key

|

+-> Logical Volume BADA0F47-13F7-4920-ABB4-2ED458405A0F

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

Disk: disk1

Status: Online

Size (Total): 388055695360 B (388.1 GB)

Revertible: Yes (unlock and decryption required)

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

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

gpt show: /dev/disk0: mediasize=500277790720; sectorsize=512; blocks=977105060

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 977105059

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 758630360 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

759040000 1269760 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

760309760 216795136 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

977104896 131

977105027 32 Sec GPT table

977105059 1 Sec GPT header

$ sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 60821/255/63 [977105060 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 - 758630360] <Unknown ID>

3: AB 1023 254 63 - 1023 254 63 [ 759040000 - 1269760] Darwin Boot

4: 0C 1023 254 63 - 1023 254 63 [ 760309760 - 216795136] Win95 FAT32L

Please start a new discussion in Boot Camp . This is an old and long discussion and is very rarely monitored.

I followed Loner T's suggestion and posted a new topic about this, but it quickly got burried in the ever-growing pile of new topics—all on this subject. So I went back through everything and tried to figure it out myself, and I got it sorted out. So, since this thread was the top hit in google when I was trying to find an answer for this problem, I'll put the answer that worked for me here in case it helps someone else.

This is a solution Loner T has offered to several people having this issue in this and other threads:

sudo fdisk -e /dev/disk0

p

setpid 4

07

flag 4

p

write

y

However, that didn't work for me because every time I got to the second to last step, I'd enter the "write" command and hit enter, and it would tell me the operation was not permitted. I found the answer somewhere in my reading, though. You have to boot into recovery (hold down CMD+R while booting), open the Terminal, and type "csrutil disable" to disable System Integrity Protection (sometimes called rootless). Once this is disabled, reboot and enter the commands above and it should work this time. Now reboot while holding down the OPT key, and Windows should be back. It worked for me at least. And don't worry about disabling SIP. It turns itself back on when you reboot again.

Also note that the commands "setpid 4" and "flag 4" worked for me because my Windows partition was the fourth in the list when I entered the "p" command. I've seen it in other threads where the desired partition was listed third, so the commands had to be "setpid 3" and "flag 3."

There, that should help anyone else who stumbles in here from google with this problem.

Cheers!

how to navigate when i write ?<enter> it shows command not found

Give this man a Nobel prize. You have saved me a lot of grief. Thanks!

I had exactly the same problem and did what you said, but I got this after "w" and "y" commands.

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!

Unable to open device '/dev/disk0' for writing! Errno is 1! Aborting write!

EDIT

FOund my answer in an earlier post.

Hi Christopher, I'm on the same problem, I can not start Windows 10 on my MacBook Air.

In short, reduced the Macintosh partition 90GB to 80GB HD and unable to allocate space 10GB free at (BootCamp) Windows, I returned to assign the Macintosh HD 90GB running again

I try to follow your footsteps, but no where to create the MBR and partition to assign

I'm too worried because I have some software licenses on the Windows partition and do not want to lose.

I'll thank me much help.