MattP94
Level 1 (0 points)

Q: Inaccessible bootcamp partition for startup disk

Here are the results of the commands that Christopher asked for in thread: https://discussions.apple.com/thread/4144252

 

Matts-iMac:~ mattp$ sudo fdisk /dev/disk0

Disk: /dev/disk0          geometry: 121601/255/63 [1953525168 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 - 1660156288] HFS+       

3: AB 1023 254  63 - 1023 254  63 [1660565928 -    1269536] Darwin Boot

*4: 07 1023 254  63 - 1023 254  63 [1661837312 -  291686400] HPFS/QNX/AUX

 

 

Matts-iMac:~ mattp$ sudo gpt -r -v show disk0

gpt show: disk0: mediasize=1000204886016; sectorsize=512; blocks=1953525168

gpt show: disk0: Suspicious MBR at sector 0

       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  1660156288      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

  1660565928     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

  1661835464        1848        

  1661837312   291686400      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

  1953523712        1423        

  1953525135          32         Sec GPT table

  1953525167           1         Sec GPT header

iMac (27-inch Mid 2011), OS X Mountain Lion (10.8.4)

Posted on Jul 16, 2013 6:37 PM

by Christopher Murphy,Solvedanswer
Christopher Murphy Christopher Murphy
Level 3 (555 points)
A:

And what happens if you boot the computers with the option key held down. You should see several icons, is there a Windows option?

Posted on Jul 16, 2013 9:12 PM

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MattP94

Q: Inaccessible bootcamp partition for startup disk

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  • by MattP94,

    MattP94 MattP94 Jul 17, 2013 11:54 AM in response to Christopher Murphy
    Level 1 (0 points)
    Jul 17, 2013 11:54 AM in response to Christopher Murphy

    Yeah, realized it was that old, just figure if it's really hard-coded with apple, they're probably not too concerned about changing it. That said, I'll see what Tuxera has to say about it now.

     

    Here's the mount results.

     

    Matts-iMac:~ mattp$ mount

    /dev/disk0s2 on / (hfs, local, journaled)

    devfs on /dev (devfs, local, nobrowse)

    map -hosts on /net (autofs, nosuid, automounted, nobrowse)

    map auto_home on /home (autofs, automounted, nobrowse)

    /dev/disk0s4 on /Volumes/BOOTCAMP (fusefs_txantfs, local, synchronous)

  • by Christopher Murphy,

    Christopher Murphy Christopher Murphy Jul 17, 2013 12:07 PM in response to MattP94
    Level 3 (555 points)
    Jul 17, 2013 12:07 PM in response to MattP94

    /dev/disk0s4 on /Volumes/BOOTCAMP (fusefs_txantfs, local, synchronous)

     

    The problem is the fs type in mount info is fusefs_txantfs instead of ntfs as it is when Apple's fs kext is being used. I'm curious how Paragon's results compare. Apple lists msdos, ntfs, and udf as valid options. Since fusefs_txantfs isn't on the list, it's not seen as a valid file system.

     

    I don't know that it's possible for Tuxera to do anything about this because they do in fact implement NTFS via FUSE. Whereas Apple could list any *ntfs file system as bootable. But I suspect they'd just say "works as designed".

     

    You could hack the prefpane in a hexeditor and find the two instances of ntfs and substitute fusefs_txantfs intead. And yeah I would consider it somewhat catestraphic because a.) it's a regression over default behavior and b.) it obviates setting Windows for default booting. The present behavior means you have to use option at boot every time you want to boot windows.

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