Bootcamp issue, need assistance.

So a break down of what occurred. First off I use a macbook pro mid 2012 still running 10.8.5. I have not upgraded due to compatibly issues with certain apps I use. I had bootcamp installed running Windows 10 and I used that more than Mountain Lion for many months for work. I had bought a product from a store that said it was only compatible with El Capitan. I figured since my mac is capable of booting off 2 partitions (BOOTCAMP/MAC) then I could spilt the mac partition and make a 3rd one as well (EL CAPITAN) just to stay current with the latest OS and boot from that if I need to from time to time. Mostly for non work related stuff. After doing this I was no longer able to boot into bootcamp. I thought if I had deleted El Capitan it would fix the problem but it didn't. Now my Mac only boots into Mountian Lion. However Bootcamp still exists. Terminal & a third party app called Stellar Phoenix Mac Recovery confirmed this. The windows partition is NTFS. Also under disk utility bootcamp shows up as disk0s3 which is greyed out and won't mount. I've read other posts where people experienced similar problems like mine and where able to boot back into windows but I feel like my situation requires a different method of fixing. Does anyone know a way of fixing this? I need to boot back into windows because all my work documents are in there. After recovering these files I will uninstall bootcamp all together because I now I have a separate pc to use but its very important I recover the contents from my c drive. Also my hdd is 2TB. About 750gb for mac and 1.2 tb for windows.

MacBook Pro (13-inch Mid 2012), OS X Mountain Lion (10.8.5)

Posted on Aug 20, 2016 10:47 PM

Reply
27 replies

Aug 21, 2016 12:08 PM in response to Loner T

Last login: Sun Aug 21 11:59:10 on ttys000

Ashots-MacBook-Pro:~ ashottovmasian$ diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *2.0 TB disk0

1: EFI 209.7 MB disk0s1

2: Apple_HFS Macintosh HD 799.1 GB disk0s2

3: Microsoft Basic Data 1.2 TB disk0s3

Ashots-MacBook-Pro:~ ashottovmasian$ diskutil cs list

No CoreStorage logical volume groups found

Ashots-MacBook-Pro:~ ashottovmasian$ sudo gpt -vv -r show /dev/disk0

gpt show: /dev/disk0: mediasize=2000398934016; sectorsize=512; blocks=3907029168

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 3907029167

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 1560655832 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

1561065472 262144

1561327616 2345701376 3 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

3907028992 143

3907029135 32 Sec GPT table

3907029167 1 Sec GPT header

Ashots-MacBook-Pro:~ ashottovmasian$ sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: -1539437/4/63 [-387938128 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: AF 1023 254 63 - 1023 254 63 [ 409640 - 1560655832] HFS+

3: 0C 1023 254 63 - 1023 254 63 [1561327616 - -1949265920] Win95 FAT32L

4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

Ashots-MacBook-Pro:~ ashottovmasian$ sudo dd if=/dev/rdisk0s3 count=1 2>/dev/null | hexdump -c

0000000 ? R 220 N T F S \0 002 \b \0 \0

0000010 \0 \0 \0 \0 \0 ? \0 \0 ? \0 ? \0 \0 ? 017 ]

0000020 \0 \0 \0 \0 200 \0 200 \0 ? 217 ? 213 \0 \0 \0 \0

0000030 \0 \0 \f \0 \0 \0 \0 \0 002 \0 \0 \0 \0 \0 \0 \0

0000040 ? \0 \0 \0 001 \0 \0 \0 ? x ? z ? ? z ,

0000050 \0 \0 \0 \0 ? 3 ? 216 ? ? \0 | ? h ? \a

0000060 037 036 h f \0 ? 210 026 016 \0 f 201 > 003 \0 N

0000070 T F S u 025 ? A ? ? U ? 023 r \f 201 ?

0000080 U ? u 006 ? ? 001 \0 u 003 ? ? \0 036 203 ?

0000090 030 h 032 \0 ? H 212 026 016 \0 213 ? 026 037 ? 023

00000a0 237 203 ? 030 236 X 037 r ? ; 006 \v \0 u ? ?

00000b0 017 \0 ? . 017 \0 004 036 Z 3 ? ? \0 + ?

00000c0 f ? 006 021 \0 003 026 017 \0 216 ? ? 006 026 \0 ?

00000d0 K \0 + ? w ? ? \0 ? ? 032 f # ? u -

00000e0 f 201 ? T C P A u $ 201 ? 002 001 r 036 026

00000f0 h \a ? 026 h R 021 026 h \t \0 f S f S f

0000100 U 026 026 026 h ? 001 f a 016 \a ? 032 3 ? ?

0000110 \n 023 ? ? \f ? ? ? ? ? 001 220 220 f ` 036

0000120 006 f ? 021 \0 f 003 006 034 \0 036 f h \0 \0 \0

0000130 \0 f P 006 S h 001 \0 h 020 \0 ? B 212 026 016

0000140 \0 026 037 213 ? ? 023 f Y [ Z f Y f Y 037

0000150 017 202 026 \0 f ? 006 021 \0 003 026 017 \0 216 ? ?

0000160 016 026 \0 u ? \a 037 f a ? ? ? 001 ? \t \0

0000170 ? ? 001 ? 003 \0 ? ? ? 213 ? ? < \0 t \t

0000180 ? 016 ? \a \0 ? 020 ? ? ? \r \n A d i

0000190 s k r e a d e r r o r o c

00001a0 c u r r e d \0 \r \n B O O T M G R

00001b0 i s c o m p r e s s e d \0 \r

00001c0 \n P r e s s C t r l + A l t +

00001d0 D e l t o r e s t a r t \r \n

00001e0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0

00001f0 \0 \0 \0 \0 \0 \0 212 001 ? 001 ? 001 \0 \0 U ?

0000200

Ashots-MacBook-Pro:~ ashottovmasian$

Aug 21, 2016 1:40 PM in response to Loner T

Well now at start up when I hold down option i'm somewhat able to boot into windows expect when I do I get a error message that says "A disk read error occurred, press Ctrl+Alt+Del to restart" Pressing those keys won't let me restart either I even tried on a standard logitech keyboard for windows. Also in disk utility bootcamp is still greyed out/unmounted and labeled as disk0s3.

Aug 21, 2016 8:13 PM in response to Ash T91

Unless there is a third-party NTFS software controlling the volumes, or the OSX Kernel extensions (KEXTs) are corrupt, the normal behavior is to enable 'Hard Disks' in Finder Preferences and the BC partition will show up on the Desktop.


A 2Tb disk is non-standard in a 2012 MBP. You are also missing Recovery HD. Are there specific reasons for these? What modifications have been made to this MBP so far?

Aug 21, 2016 8:46 PM in response to Loner T

I've tried that and only the mac partition is showing up. The only modifications made was installing the 2TB HDD. The reason for this was because I was using Bootcamp before on the stock 750 gb hdd and I needed more room for windows and I didn't want to compromise the hd space of the mac partition. So what I did originally was remove Bootcamp then copy the mac partition over to the new hard drive. Everything was working fine. Afterwards I made a new partition for windows and tried installing bootcamp. I had some trouble at first getting it to install but I got it to work and everything was running great. The only change I noticed was Bootcamp HDD wasn't showing up no matter what I did but I never thought that was a big deal anyway.


When booting up my macbook gives me two to options to choose to boot from. One is "Windows Installer" (Not Bootcamp) & the other is "EFI Boot". I tired start up repair from both and right after I get the message "windows is diagnosing your computer" it immediately restarts and nothing changes. The article from that link you posted says to try another step if start up repair doesn't work but I'm not sure if I should boot into the windows installer or the EFI boot before I do that.

Aug 21, 2016 9:13 PM in response to Loner T

I want to say yes. Windows was installed using EFI boot because as mentioned before I ran into trouble using the regular installer. I've had bootcamp installed on my MBP 4 times. First when I bought the MBP I installed bootcamp but quickly removed it afterwards because I had no use for it. The second time was when I needed bootcamp for work and I used it for over a year until I needed more space. The 3rd time I reinstalled bootcamp I gave it more space than the Mac Partition and that led me to removing it again and buying a 2TB HDD instead. All the previous times I installed bootcamp there was no UFI boot or anything like that to my knowledge. I used bootcamp assistance and created a usb stick for installation. When I tried installing the newly released windows 10 via bootcamp assistance after I got the 2TB HDD I ran into some issues. It ended up working but I needed to boot from the windows 10 disc this time around and that's when I got the option to ufi boot and that was the only way it worked for me. Also an article online suggested I do that because I had no idea what UFI boot was. I don't remember how or when the Recovery HD was deleted because I didn't have it on my mac for a long time. I might have deleted it accidentally or it could have been something else I really don't remember.

Aug 21, 2016 9:33 PM in response to Ash T91

W7/W8.1 would install using legacy BIOS/MBR on a 2012 Mac. W10 tries EFI boot, but can be messy. I have installed W10 in BIOS mode on a 13-in 2012 MBP using BC Assistant normally.


The GPT entry

1561327616 2345701376 3 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

and the corresponding MBR

3: 0C 1023 254 63 - 1023 254 63 [1561327616 - -1949265920] Win95 FAT32L


do not match. See the highlighted numbers. This is a problem and should be corrected. Please download GPT Fdisk from https://sourceforge.net/projects/gptfdisk/ and install it. I can provide steps, once you have it installed. The standard steps will not work for you because you do not have a Recovery HD.

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Bootcamp issue, need assistance.

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