Can't boot to Mac after formatting partition from Windows

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Can't boot to Mac after formatting partition from Windows

Can't boot to mac after bad formatting partitions from windows.

After installing windows from mac I've created aditional third partition for data. It was in hfs+ and I needed it in ntfs. The structure of partitions was (Macintosh HD) - (Data) - (BOOTCAMP). Then I decided to format it to ntfs from windows and, unfurtunately, I did bad thing - after dropping Data partition, I dropped as well two small hidden partitions without names in widnows disk manager - (about 200MB) before Windows partition, and another (about 620MB) between Mac and Data (for now I assume that was AB00 Recovery HD). After all of this I can only boot Windows.

Is it possible to fix this somehow without deleteing windows and reinstalling everything with internet recovery?

http://imgur.com/uSH5FvD results for commands

diskutil list

diskutil cs list

gpt -vv -r show /dev/disk0

fdisk /dev/disk0

Thanks!

MacBook Pro with Retina display, OS X El Capitan (10.11.2)

Posted on Jan 5, 2016 7:05 AM

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Answer 1

Loner T

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Jan 5, 2016 7:39 AM in response to ioc_23

In Internet Recovery, your disks have been renumbered. Please post the output of

gpt -vv -r show /dev/disk1

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Answer 2

ioc_23 Author

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Jan 5, 2016 8:49 AM in response to Loner T

http://imgur.com/zubD7ws

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Answer 3

Loner T

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Jan 5, 2016 9:40 AM in response to ioc_23

Your GPT shows, EFI, OSX CS, and two Microsoft Data partitions. If you shutdown your Mac, and power it back up and hold the Alt/Option key, what selections do you see?

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Answer 4

ioc_23 Author

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Jan 5, 2016 9:36 AM in response to Loner T

There is only Windows.

But when i'm leaving internet recovery there is option to select boot partition and there both available - mac and win. When I choose mac form internet recovery after restart is stuck a bit longer with black screen and loads windows. 'Restart in OS X' from windows boot camp works same way ...

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Answer 5

Loner T

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Jan 5, 2016 9:43 AM in response to ioc_23

Can you run the following two procedures and test?

How to Reset NVRAM on your Mac - Apple Support

Resetting the System Management Controller (SMC) on your Mac - Apple Support

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Answer 6

ioc_23 Author

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Jan 5, 2016 11:21 AM in response to Loner T

Windows is still only available option ...

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Answer 7

Loner T

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Jan 5, 2016 11:36 AM in response to ioc_23

Boot into Internet Recovery. Find the disk which is your internal disk and run

diskutil repaidDisk diskN - where N points to the internal disk.

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Answer 8

ioc_23 Author

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Jan 5, 2016 2:49 PM in response to Loner T

I've run that disk repair for my disk1 - and there are no effect

Output is in first image http://imgur.com/a/ZrLVJ and there is second one - that's how 'Choose startup disk' menu looks like from Internet recovery.

Also https://www.dropbox.com/s/kwovl0kcuxtxkug/Video%2006.01.16%2000%2031%2027.mov?dl =0 that's video with reboot just after disk repair and second try with option...

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Answer 9

Loner T

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Jan 5, 2016 2:56 PM in response to ioc_23

There is a message in your repair output which says disk1s2 (which should be OSX) cannot be repaired when it is in use.

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Answer 10

ioc_23 Author

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Jan 5, 2016 3:00 PM in response to Loner T

Ok, I see that now ... But how it could be in use during repair from internet recovery's terminal?

I'll try again

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Answer 11

ioc_23 Author

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Jan 5, 2016 3:03 PM in response to Loner T

Ok, I see that now ... But how it could be in use during repair from internet recovery's terminal?

I'll try again

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Answer 12

Loner T

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Jan 5, 2016 3:04 PM in response to ioc_23

If you were in Internet Recovery, the disk should not be in use. Please ensure you use Command+Opt+R to get to Internet Recovery.

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Answer 13

ioc_23 Author

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Jan 5, 2016 3:22 PM in response to Loner T

Actually i have no other option from where to run terminal. Currently I was running internet recovery with Cmd + R (it took about 3-5mins to load it from previously download image on disk0) and just now I've tried with Cmd+Opt+R (it took about 10mins) and loded same thing - "spinning globe, then menu to choose wifi, loading process, than question to choose language and internet recovery is on. There from menu I choose 'Terminal'

But problem remains the same - disk1s2 is in use for some reason ...

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Answer 14

Loner T

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Jan 5, 2016 3:31 PM in response to ioc_23

The spinning globe indicates Internet Recovery. If the repair completed successfully, are you able to select OSX and Boot? If the EFI partition was deleted from the Windows side, repair should rebuild it.

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Answer 15

ioc_23 Author

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Jan 5, 2016 3:35 PM in response to Loner T

No, repairs log still has message that 'disk1s2 (which should be OS X)' cannot be repaired when it is in use

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