Garycooke

Q: Windows 7 Vanished after Yosemite update... help?

Hi, to anyone that might be able to help.

 

I have a macbook air and have recently done a Yosemite update, 10.10.4 and since doing so i can no longer boot from my Windows 7 partition. Even when booting with the option key.

 

Loner T has put a few posts asking for information from 'Terminal'. I did this and it just kept going and going and going, so i stopped it and her is the first 20 lines which seem to be the information needed:

 

00000000  a3 ce 21 b0 ba dc d1 70  8c 8d 7b 26 48 b6 f6 44  |..!....p..{&H..D|

00000010  27 26 e8 0a 58 ae ac df  03 ec 00 b1 1d a2 91 c5  |'&..X...........|

00000020  1c 75 29 8b 96 41 f6 35  c7 d5 9e 78 21 89 bf 88  |.u)..A.5...x!...|

00000030  15 ae 48 43 f3 7c 8e f4  7c 57 b3 e8 2b 22 31 6f  |..HC.|..|W..+"1o|

00000040  f2 78 73 33 ba b0 a6 7c  8d 09 17 4d 8e ec da a9  |.xs3...|...M....|

00000050  a1 b9 1b 62 5c 04 70 38  af c4 c5 25 5f c0 ca a8  |...b\.p8...%_...|

00000060  b8 f4 41 8d b9 35 87 2d  bc cd 1d 04 b8 8e 0c 20  |..A..5.-....... |

00000070  8b 89 df 31 ad a1 ab 10  76 c9 c3 3d 20 b4 8f 2b  |...1....v..= ..+|

00000080  72 76 3d ed 2a 8d 88 23  eb 5a de c2 e6 e5 fd eb  |rv=.*..#.Z......|

00000090  f6 80 e4 62 d6 9b a4 16  d0 20 b0 20 2c 54 11 e1  |...b..... . ,T..|

000000a0  b8 0a 20 e1 8e 29 99 d8  f6 08 ed 3c 08 47 59 63  |.. ..).....<.GYc|

000000b0  a0 cf fc dc 4f 2d 4f d3  bc 52 f5 24 98 35 58 c1  |....O-O..R.$.5X.|

000000c0  29 88 43 ce bc 4d fa 0d  91 0d 8f 9f 7c 0d 12 08  |).C..M......|...|

000000d0  b4 d7 43 04 cc f8 9f f0  9f f5 dd a9 d0 c1 99 c5  |..C.............|

000000e0  a1 55 fc 02 2b 2b 04 af  d0 df ca 5c b7 bf 10 04  |.U..++.....\....|

000000f0  24 17 df e8 1a df c8 cb  49 d8 a0 19 c5 93 59 f0  |$.......I.....Y.|

00000100  98 3f 03 13 f9 9b 3f 16  61 0b 38 a4 78 a3 7b 64  |.?....?.a.8.x.{d|

00000110  db f4 a8 58 54 c3 65 be  d9 39 d8 d3 2a 6e cd 7c  |...XT.e..9..*n.||

00000120  30 f7 27 b3 70 1b 21 f8  fd 9a 72 72 70 84 af 1e  |0.'.p.!...rrp...|

00000130  c7 bb 16 df d0 cb 92 95  bf 18 a0 cf 0c c2 01 91  |................|

00000140  1b 1a a2 c6 94 f6 48 8c  e0 93 9c 92 e6 e4 f1 5e  |......H........^|

00000150  c3 e3 3a c1 c3 f7 2d 53  d4 91 e2 d0 1d 7a 93 b0  |..:...-S.....z..|

00000160  9b a4 9d 42 e5 09 c0 97  21 9f ac 88 ca 7e 60 bd  |...B....!....~`.|

00000170  8e 65 bf 86 2b 64 e7 bc  ad 12 9a c6 d3 c1 07 e7  |.e..+d..........|

00000180  24 3f 32 2e 51 fa bf 40  1a 90 44 72 36 d1 b9 ed  |$?2.Q..@..Dr6...|

00000190  40 a9 80 0d 62 90 be a3  78 42 f8 b8 03 bf d0 f2  |@...b...xB......|

000001a0  7b d6 e2 25 d8 d0 35 2b  5e ff df 49 69 2e 14 ad  |{..%..5+^..Ii...|

000001b0  80 9b c1 c5 d8 98 63 d7  d8 a6 a1 9b 98 94 87 2d  |......c........-|

000001c0  e5 b7 9b 2a 54 6d 6f e7  02 de 65 4a 1f 77 ab 98  |...*Tmo...eJ.w..|

000001d0  d6 a5 aa 5c 3c 1a 6e 34  89 ca 19 3c c8 19 6e de  |...\<.n4...<..n.|

000001e0  40 84 ff 21 e9 ea dd ca  9e a5 a5 b9 3d 43 0b 0f  |@..!........=C..|

000001f0  80 0f 1e d4 d1 9a 8b a9  a4 f5 35 d3 ee 99 c1 8a  |..........5.....|

00000200  45 f8 04 ee 89 08 7c dc  99 4a 4c 36 ad e4 af 24  |E.....|..JL6...$|

 

any help would be really appreciated as all my work is currently on the windows partition

MacBook Air, OS X Yosemite (10.10.4)

Posted on Jul 2, 2015 9:22 AM

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Q: Windows 7 Vanished after Yosemite update... help?

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  • Helpful answers

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  • by Loner T,

    Loner T Loner T Jul 2, 2015 12:33 PM in response to Garycooke
    Level 7 (24,344 points)
    Safari
    Jul 2, 2015 12:33 PM in response to Garycooke

    No. We are not manipulating any data on the disk, only the pointers (or sectors) where the files live on disk).

  • by Garycooke,

    Garycooke Garycooke Jul 2, 2015 1:02 PM in response to Loner T
    Level 1 (0 points)
    Jul 2, 2015 1:02 PM in response to Loner T

    you are an absolute legend! Thanks you so much for the help! I am no longer a dead man and can stop sweating.

  • by Loner T,

    Loner T Loner T Jul 2, 2015 1:06 PM in response to Garycooke
    Level 7 (24,344 points)
    Safari
    Jul 2, 2015 1:06 PM in response to Garycooke

    Glad to see it working. Please create a backup of OSX and Windows to separate external disks and use these as a baseline for future recovery.

  • by ajb413,

    ajb413 ajb413 Jul 13, 2015 11:17 AM in response to Garycooke
    Level 1 (0 points)
    Jul 13, 2015 11:17 AM in response to Garycooke

    I am on 2013 MBP

     

    I couldn't see my Windows 7 partition after installing Yosemite.

    I just followed all of the steps and made my partition visible again.

    When I tried to boot it, it said "A disk read error occurred. control-alt-del to restart"

    I tried to use the windows repair tool like I saw in one of Loner T's posts, but when I booted from the flash drive, I couldn't navigate the windows menu, no response form the trackpad or keyboard.

     

    I assume it was a driver issue with the Windows 7 software, not recognizing the keyboard or trackpad.

    I went into bootcamp assistant and added:

    <string>iMacBookPro11,1</string>

    to info.plist in the bootcamp assistant package contents.

    Then ran:

    sudo codesign -fs - /Applications/Utilities/Boot\ Camp\ Assistant.app/Contents/info.plist

    sudo codesign -fs - /Applications/Utilities/Boot\ Camp\ Assistant.app


    I burned win7 to my flashdrive again.


    I ran:

    sudo /usr/sbin/bless --device /dev/disk2 --setBoot --nextonly --legacy

    and then I rebooted


    My MBP does not recognize the flashdrive as a bootable disk.

     

     

    I removed <string>MacBookPro11,1</string> from info.plist and burned again, and I have the same not bootable problem.

     

    I fear I have corrupted boot camp assistant, and I don't know how to reinstall it.

     

    Can someone help me? I want to repair my windows partition so I can use it... mostly so I can get the install key and then reinstall because its probably very corrupted at this point haha.

  • by Loner T,

    Loner T Loner T Jul 13, 2015 12:48 PM in response to ajb413
    Level 7 (24,344 points)
    Safari
    Jul 13, 2015 12:48 PM in response to ajb413

    1. You can make BCA work correctly if you use

    sudo codesign --deep -fs - /Applications/Utilities/Boot\ Camp\ Assistant.app

    2. If the MBP does not have a built-in Optical drive, you will be shown the option to create a USB installer. Please use a USB2 flash drive, not a USB3 device.

    3. Use BCA to create a USB installer, which does not require the use of bless command.

  • by ajb413,

    ajb413 ajb413 Jul 13, 2015 2:39 PM in response to Loner T
    Level 1 (0 points)
    Jul 13, 2015 2:39 PM in response to Loner T

    I have no optical drive, I've been using a USB 2.0 flash drive

     

    I ran:

    sudo codesign --deep -fs - /Applications/Utilities/Boot\ Camp\ Assistant.app

    reinstalled win 7 using BCA on my USB 2.0 flash drive

    the option at the bottom in BCA was only to remove the windows partition, instead of install


    restarted, held down option key, and there was no flash drive to boot from. Only machd and windows.


    ran

    sudo /usr/sbin/bless --device /dev/disk2s1 --setBoot --nextonly --legacy

    and restarted.


    "non-bootable disk

    ctrl-alt-del to restart"


  • by Loner T,

    Loner T Loner T Jul 13, 2015 2:49 PM in response to ajb413
    Level 7 (24,344 points)
    Safari
    Jul 13, 2015 2:49 PM in response to ajb413

    Can you re-install OSX and get BCA to work properly first?

  • by ajb413,

    ajb413 ajb413 Jul 15, 2015 12:32 PM in response to Loner T
    Level 1 (0 points)
    Jul 15, 2015 12:32 PM in response to Loner T

    I tried to repair yosemite with the re-install instructions here:

    https://support.apple.com/kb/PH18872?locale=en_US

    Next what happened was pretty bad...

    I went to log in to my mac partition and i got a big no smoking sign

    I restarted + CTRL R and installed yosemite again, except this time my wifi cut out in the middle of the download and it wasn't able to continue when I reconnected.

    Next the menu for restard + ctrl R became a spinning globe with a terrible, incomplete UI to pick a wireless connection. Whichever service is closest to your computer, most likely your home wifi, does not show up in the list of available networks. I can manually input my network credentials but of course it can't connect that way either, so I can't connect to the internet. Same deal with my Wifi at work, it can't select the nearest wifi, but it can see the second nearest and so on.


    I found a usb to ethernet at work, that allowed me to connect. The download takes hours. I finally get back to the recovery area where I can install yosemite, use safari, or disc utility and something else I forget. I accidentally reboot, and I'm back to where I was before I downloaded anything. This time, it will not download through ethernet.

    restarting with command+ option+ R+ P or restarting with left shift+ control+ option have not helped my situation either

     

     

  • by ajb413,

    ajb413 ajb413 Jul 15, 2015 12:50 PM in response to ajb413
    Level 1 (0 points)
    Jul 15, 2015 12:50 PM in response to ajb413

    EDIT:
    I rebooted the computer and it connected to my company's guest wif, which makes no sense because I didn't put in the password, and it downloaded whatever it did at the globe screen in 5 minutes... alrighty.... now i am installing mavericks (at least that's what I think it is doing)

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