littledragon294

Q: Windows 10 on Macbook: "No audio output Device is installed"

I install Windows 10 on my MacBook, and MacBook has no sound. "No audio devices is installed."

 

Please Help.

 

 

MacBook Pro 13'' Mid 2012, Yosemite 10.10.4 .

Posted on Jul 20, 2015 12:13 AM

Close

Q: Windows 10 on Macbook: "No audio output Device is installed"

  • All replies
  • Helpful answers

Previous Page 2 of 3 last Next
  • by Loner T,

    Loner T Loner T Jul 21, 2015 7:21 AM in response to littledragon294
    Level 7 (23,920 points)
    Safari
    Jul 21, 2015 7:21 AM in response to littledragon294

    BCA failed to create an MBR for your Mac. Please download GPT Fdisk http://sourceforge.net/projects/gptfdisk/ and I will give you the steps to create the appropriate MBR.

  • by littledragon294,

    littledragon294 littledragon294 Jul 21, 2015 7:26 AM in response to Loner T
    Level 1 (0 points)
    Jul 21, 2015 7:26 AM in response to Loner T

    Done.  How to create the appropriate MBR? I hope Macbook can boot form USB (without error :"No Bootable Disc,..) to continue the installation.

  • by Loner T,

    Loner T Loner T Jul 21, 2015 7:41 AM in response to littledragon294
    Level 7 (23,920 points)
    Safari
    Jul 21, 2015 7:41 AM in response to littledragon294

    These steps are different than others. We need to use all defaults supplied by Gdisk.


    Rebuild MBR to match the new GPT information thus resetting the Hybrid MBR. Use defaults for other questions (like partition codes). The only values that need modifications are the Boot flags and step 10. Accept all other defaults that Gdisk offers. Please see the sample Q&A as an example. These steps can be repeated if you make a mistake before you get to Step 12, otherwise start from Step 1 for these steps. Step 6 has numbers which are typed with a space between the numbers.

    1. Sudo gdisk /dev/rdisk0
    2. P  (Print list of parts)
    3. R  (Recover)
    4. O (print current Hybrid MBR)
    5. H (chooses Hybrid)
    6. Partitions numbers to be hybridized: 2 3 4
    7. Please see the sample Q&A.
    8. O  (print current Hybrid MBR)
    9. W (Write the new MBR)
    10. Y (Yes! write the new MBR)
    11. Reboot

     

    Here is sample Q&A for this section. Please notice the Press Enter/Return.

     

    Place EFI GPT (0xEE) partition first in MBR (good for GRUB)? (Y/N): Y

     

    Creating entry for GPT partition #2 (MBR partition #2)

    Enter an MBR hex code (default AF): Press Enter/Return

    Set the bootable flag? (Y/N): Press Enter/Return

     

    Creating entry for GPT partition #3 (MBR partition #3)

    Enter an MBR hex code (default AB): Press Enter/Return

    Set the bootable flag? (Y/N): Press Enter/Return

     

    Creating entry for GPT partition #4 (MBR partition #4)

    Enter an MBR hex code (default 07): Press Enter/Return

    Set the bootable flag? (Y/N): Press Enter/Return

  • by littledragon294,

    littledragon294 littledragon294 Jul 21, 2015 8:04 AM in response to Loner T
    Level 1 (0 points)
    Jul 21, 2015 8:04 AM in response to Loner T

    Done, Loner T. But patition 4 is not like the sample. Now can I continue the installation?

  • by Loner T,

    Loner T Loner T Jul 21, 2015 8:04 AM in response to littledragon294
    Level 7 (23,920 points)
    Safari
    Jul 21, 2015 8:04 AM in response to littledragon294

    Yes, please.

  • by littledragon294,

    littledragon294 littledragon294 Jul 21, 2015 8:13 AM in response to Loner T
    Level 1 (0 points)
    Jul 21, 2015 8:13 AM in response to Loner T

    When I use sudo command, some differences here:

     

    Type from one to three GPT partition numbers, separated by spaces, to be

    added to the hybrid MBR, in sequence: 2 3 4

    Place EFI GPT (0xEE) partition first in MBR (good for GRUB)? (Y/N): Y

     

    Creating entry for GPT partition #2 (MBR partition #2)

    Enter an MBR hex code (default AF):

    Set the bootable flag? (Y/N):

    Your option? (Y/N): Y

     

    Creating entry for GPT partition #3 (MBR partition #3)

    Enter an MBR hex code (default AB):

    Set the bootable flag? (Y/N):

    Your option? (Y/N): Y

     

    GPT partition #4 does not exist or is too big; skipping.

     

    Unused partition space(s) found. Use one to protect more partitions? (Y/N):

    Your option? (Y/N): Y

    Note: Default is 0xEE, but this may confuse Mac OS X.

     

     

    After reboot, BCA:

     

    Screen Shot 2015-07-21 at 22.12.40.png

     

    Please help something wrong?

  • by Loner T,

    Loner T Loner T Jul 21, 2015 8:24 AM in response to littledragon294
    Level 7 (23,920 points)
    Safari
    Jul 21, 2015 8:24 AM in response to littledragon294

    Please post the output of

     

    sudo gpt -vv -r show /dev/disk0

    sudo fdisk /dev/disk0

  • by littledragon294,

    littledragon294 littledragon294 Jul 21, 2015 8:30 AM in response to Loner T
    Level 1 (0 points)
    Jul 21, 2015 8:30 AM in response to Loner T

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


    gpt show: /dev/disk0: mediasize=500107862016; sectorsize=512; blocks=976773168

    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 976773167

          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  975093952      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

      975503592    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      976773128          7        

      976773135         32         Sec GPT table

      976773167          1         Sec GPT header

     

     

    sudo fdisk /dev/disk0:


    Disk: /dev/disk0 geometry: 60801/255/63 [976773168 sectors]

    Signature: 0xAA55

             Starting       Ending

    #: id  cyl  hd sec -  cyl  hd sec [     start -       size]

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

    1: EE    0   0   2 -   25 127  14 [         1 -     409639] <Unknown ID>

    *2: AF   25 127  15 - 1023 254  63 [    409640 -  975093952] HFS+       

    *3: AB 1023 254  63 - 1023 254  63 [ 975503592 -    1269536] Darwin Boot

    4: EE 1023 254  63 - 1023 254  63 [ 976773128 -         40] <Unknown ID>

  • by Loner T,

    Loner T Loner T Jul 21, 2015 8:50 AM in response to littledragon294
    Level 7 (23,920 points)
    Safari
    Jul 21, 2015 8:50 AM in response to littledragon294

    You do not have a BC/Windows partition yet, hence you do not have a valid MBR.

     

    1. Please boot in Safe Mode - Try safe mode if your Mac doesn't finish starting up - Apple Support and then boot normally and test BCA partition creation.

    2. If that does not work, please try Using Disk Utility to verify or repair disks - Apple Support and try BCA.

    3. If that does not work, please try Resolve startup issues and perform disk maintenance with Disk Utility and fsck - Apple Support and try BCA partitioning.

    4. This is the last option -

         a. Back up OSX using Time Machine - Mac Basics: Time Machine backs up your Mac - Apple Support.

         b. Boot into Internet Recovery - OS X: About OS X Recovery - Apple Support.

         c. Erase your internal drive and restore from the TM backup in Step 1 - OS X Yosemite: Recover your entire system.

  • by littledragon294,

    littledragon294 littledragon294 Jul 21, 2015 9:22 AM in response to Loner T
    Level 1 (0 points)
    Jul 21, 2015 9:22 AM in response to Loner T

    Thank you for your help. But my Macbook still has problems. I can not fix it.

  • by Loner T,

    Loner T Loner T Jul 21, 2015 9:25 AM in response to littledragon294
    Level 7 (23,920 points)
    Safari
    Jul 21, 2015 9:25 AM in response to littledragon294

    Which step are you currently having problems with?

  • by littledragon294,

    littledragon294 littledragon294 Jul 21, 2015 9:33 AM in response to Loner T
    Level 1 (0 points)
    Jul 21, 2015 9:33 AM in response to Loner T

    Please look:

     

    Screen Shot 2015-07-21 at 23.27.17.png

    Screen Shot 2015-07-21 at 23.27.30.png

     

    two patitions have 500GB? My HDD is 500GB.

    Screen Shot 2015-07-21 at 23.28.22.png

     

    And I don't know to fix. Thanks for your reply.

  • by littledragon294,

    littledragon294 littledragon294 Jul 21, 2015 9:36 AM in response to littledragon294
    Level 1 (0 points)
    Jul 21, 2015 9:36 AM in response to littledragon294

    Screen Shot 2015-07-21 at 23.35.37.png

  • by Loner T,

    Loner T Loner T Jul 21, 2015 9:39 AM in response to littledragon294
    Level 7 (23,920 points)
    Safari
    Jul 21, 2015 9:39 AM in response to littledragon294

    Please create a new PMBR using the following steps.

     

    sudo gdisk /dev/disk0

    r

    o

    x

    n

    o

    w

    y

     

    Reboot.

     

    Here is an example. In the example I 'q'uit, instead of 'w', 'y'.

     

    sudo gdisk /dev/rdisk0

    Password:

    GPT fdisk (gdisk) version 1.0.0

     

    Warning: Devices opened with shared lock will not have their

    partition table automatically reloaded!

    Partition table scan:

      MBR: hybrid

      BSD: not present

      APM: not present

      GPT: present

     

    Found valid GPT with hybrid MBR; using GPT.

     

    Command (? for help): ?

    b back up GPT data to a file

    c change a partition's name

    d delete a partition

    i show detailed information on a partition

    l list known partition types

    n add a new partition

    o create a new empty GUID partition table (GPT)

    p print the partition table

    q quit without saving changes

    r recovery and transformation options (experts only)

    s sort partitions

    t change a partition's type code

    v verify disk

    w write table to disk and exit

    x extra functionality (experts only)

    ? print this menu

     

    Command (? for help): x

     

    Expert command (? for help): ?

    a set attributes

    c change partition GUID

    d display the sector alignment value

    e relocate backup data structures to the end of the disk

    g change disk GUID

    h recompute CHS values in protective/hybrid MBR

    i show detailed information on a partition

    l set the sector alignment value

    m return to main menu

    n create a new protective MBR

    o print protective MBR data

    p print the partition table

    q quit without saving changes

    r recovery and transformation options (experts only)

    s resize partition table

    t transpose two partition table entries

    u replicate partition table on new device

    v verify disk

    w write table to disk and exit

    z zap (destroy) GPT data structures and exit

    ? print this menu

     

    Expert command (? for help): r

     

    Recovery/transformation command (? for help): o

     

    Disk size is 1954210120 sectors (931.8 GiB)

    MBR disk identifier: 0x028A47A7

    MBR partitions:

     

    Number  Boot  Start Sector   End Sector   Status      Code

       1                     1       409639   primary     0xEE

       2                409640   1449034287   primary     0xAF

       3            1449034288   1450303823   primary     0xAB

       4      *     1450305536   1954209791   primary     0x07

     

    Recovery/transformation command (? for help): x

     

    Expert command (? for help): n

     

    Expert command (? for help): o

     

    Disk size is 1954210120 sectors (931.8 GiB)

    MBR disk identifier: 0x00000000

    MBR partitions:

     

    Number  Boot  Start Sector   End Sector   Status      Code

       1                     1   1954210119   primary     0xEE

     

    Expert command (? for help): q

  • by littledragon294,

    littledragon294 littledragon294 Jul 21, 2015 10:08 AM in response to Loner T
    Level 1 (0 points)
    Jul 21, 2015 10:08 AM in response to Loner T

    Yes. It looks better.

     

    Screen Shot 2015-07-22 at 00.05.54.png

     

    But BCA still has error:

     

    Screen Shot 2015-07-21 at 23.28.22.png

     

    What's next?  Thank You.

Previous Page 2 of 3 last Next