Chimera doesn't recognize my Windows 8 partition

lithetails · Dec 31, 2012

Hi all,

I'm having troubles with dual boot. I've installed OS X in a 90 GB partition on my Crucial M4 and Windows 8 in the rest of disk.
In first step, I installed OS X and later Windows 8. Now, I have the boot manager of Windows and boots correctly but I try boot from Chimera of my UniBeast USB key (with OS X Installer) it doesn't recognize Windows 8 partition.
In fact, OS X isn't able to mount this partition (I attach a pic).

I attach a new pic from Windows of diskpart and Disk Manager

Chimera detects my second NTFS partition called "Datos" but the first one with Windows 8 no

What's the solution? How can I to select Windows 8 partition on chimera?

On terminal, if I list my partitions:

diskutil list
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *128.0 GB disk0
1: EFI 209.7 MB disk0s1
2: Apple_HFS OS X 90.7 GB disk0s2
3: Microsoft Basic Data 37.0 GB disk0s3
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.1 GB disk1
1: EFI 209.7 MB disk1s1
2: Apple_HFS Almacen 400.1 GB disk1s2
3: Microsoft Basic Data Datos 99.8 GB disk1s3
/dev/disk2
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *8.0 GB disk2
1: Apple_HFS USB 8.0 GB disk2s1

It doesn't show the label "Windows 8" of the Windows partition.

Thank you.

RehabMan · Dec 31, 2012

lithetails said:
Hi all,

I'm having troubles with dual boot. I've installed OS X in a 90 GB partition on my Crucial M4 and Windows 8 in the rest of disk.
In first step, I installed OS X and later Windows 8. Now, I have the boot manager of Windows and boots correctly but I try boot from Chimera of my UniBeast USB key (with OS X Installer) it doesn't recognize Windows 8 partition.
In fact, OS X isn't able to mount this partition (I attach a pic).

I attach a new pic from Windows of diskpart and Disk Manager

Chimera detects my second NTFS partition called "Datos" but the first one with Windows 8 no

What's the solution? How can I to select Windows 8 partition on chimera?

On terminal, if I list my partitions:

diskutil list
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *128.0 GB disk0
1: EFI 209.7 MB disk0s1
2: Apple_HFS OS X 90.7 GB disk0s2
3: Microsoft Basic Data 37.0 GB disk0s3
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.1 GB disk1
1: EFI 209.7 MB disk1s1
2: Apple_HFS Almacen 400.1 GB disk1s2
3: Microsoft Basic Data Datos 99.8 GB disk1s3
/dev/disk2
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *8.0 GB disk2
1: Apple_HFS USB 8.0 GB disk2s1

It doesn't show the label "Windows 8" of the Windows partition.

Thank you.

What is the output of this in Terminal?

Code:

sudo fdisk /dev/rdisk0

lithetails · Dec 31, 2012

Yes, that is:

Disk: /dev/rdisk0 geometry: 15566/255/63 [250069680 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 - 177168016] HFS+
*3: 07 1023 254 63 - 1023 254 63 [ 177577984 - 72488960] HPFS/QNX/AUX
4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

RehabMan · Dec 31, 2012

lithetails said:
Yes, that is:

Disk: /dev/rdisk0 geometry: 15566/255/63 [250069680 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 - 177168016] HFS+
*3: 07 1023 254 63 - 1023 254 63 [ 177577984 - 72488960] HPFS/QNX/AUX
4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

That looks ok. But I suspect that maybe the GPT is out of sync with the MBR, perhaps. The only way to check would be to check under Linux, using gparted or gdisk to look at the start offset of the partitions on the GPT side.

If when you installed windows, you did any adding/deleting of partitions (instead of just formatting an already made partition), then things are likely out of sync...

lithetails · Dec 31, 2012

Yeah, I think was adding and deleting partition from Windows installer.
Have you a tutorial to sync MBR again?
Thanks for your solution!

EDIT: well, I used Google (yes, it's truth, is a good friend) and I found the solution! Thank you again!

EDIT2: it has not resulted. I type "sudo gptsync /dev/sda", Chimera doesn't detect my Win8 partition

The output of fdisk has changed:

Disk: /dev/rdisk0 geometry: 15566/255/63 [250069680 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 - 177168016] HFS+
*3: 0B 1023 254 63 - 1023 254 63 [ 177840128 - 72228864] Win95 FAT-32
4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

The solution is near... I hope XD

RehabMan · Dec 31, 2012

lithetails said:
Yeah, I think was adding and deleting partition from Windows installer.
Have you a tutorial to sync MBR again?
Thanks for your solution!

EDIT: well, I used Google (yes, it's truth, is a good friend) and I found the solution! Thank you again!

EDIT2: it has not resulted. I type "sudo gptsync /dev/sda", Chimera doesn't detect my Win8 partition

The output of fdisk has changed:

Disk: /dev/rdisk0 geometry: 15566/255/63 [250069680 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 - 177168016] HFS+
*3: 0B 1023 254 63 - 1023 254 63 [ 177840128 - 72228864] Win95 FAT-32
4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

The solution is near... I hope XD

Yeah, gptsync will not get you out of that problem. The problem is your MBR was changed without a corresponding change to GPT. So the GPT is out-of-sync with the MBR (MBR is correct, GPT is wrong). I think you're going to have to re-install Windows. Here is what I would suggest:

- in Linux use gparted to remove the Windows partition. This will clear your MBR and you'll have a pure GPT partition map. Then create an NTFS partition to hold your Windows8 install.
- then run gptsync to create the hybrid MBR.
- now re-install Windows to the NTFS partition. Is is ok to format it in the Windows installer (if you need to), but you don't want to delete or add any partitions within the Windows Installer or in Windows for that matter.

In general, with hybrid MBR/GPT you want to do all edits on the GPT side, and then use gptsync to create/update the MBR side.

If you want to read about all the uglies of hybrid MBR/GPT, check this article out: http://www.rodsbooks.com/gdisk/hybrid.html

THRESHE · Jan 25, 2013

Same here.

Installed Windows 8 then booted from the flash drive, reinstalled Chimera but found no Windows 8 option. Can still boot Windows from my flash drive but that's annoying.

What am I doing wrong?

RehabMan · Jan 28, 2013

THRESHE said:
Same here.

Installed Windows 8 then booted from the flash drive, reinstalled Chimera but found no Windows 8 option. Can still boot Windows from my flash drive but that's annoying.

What am I doing wrong?

What is your hardware config? Multiple disks or something?

And what do you mean by "my flash drive?" What is on the flash drive?

THRESHE · Feb 5, 2013

I have a single HD partitioned into 3 logical disks - 2 HFS+ one NTFS (in that order).

The flash drive I mentioned was made with Unibeast.

djedey · Aug 25, 2015

I removed this post (didn't know how to delete it :$ ) and posted it same again as Reply to RehabMan's Post.
because no reply yet .. so i think unless i click on reply on RehabMan's Post he will not get notified

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