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"OS X Can't Start up from this disk"

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Hey,

I am sorry, I am not getting a real error message its just that i can't select the drive ( I attached a photo of it, sorry for the cell phone quality)

Also attached is a screenshot of the disk utility. I again apologize because it is not in english, but it shows that this is GPT not a MBR. The other drive shown at the top of the screenshot is the MBR, and this is the partition on which I have Windows.
 

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Dotile said:
Hey,

I am sorry, I am not getting a real error message its just that i can't select the drive ( I attached a photo of it, sorry for the cell phone quality)

Also attached is a screenshot of the disk utility. I again apologize because it is not in english, but it shows that this is GPT not a MBR. The other drive shown at the top of the screenshot is the MBR, and this is the partition on which I have Windows.
Click to expand...

I think the partition is too large. Try creating a smaller partition in Disk Utility.
 
"OS X Cannot Start up from this disk"

I see the same error, trying to point a fresh Unibeast Mavericks installer at a happily working 10.8.5 volume of only 240GB. This is reported by Disk Utility to be a GPT disk. I repaired permissions and disconnected all other drives in the system to no effect.

The only apparently related note in the Installer log is "OSInstaller: V /Volumes/Mountain Lion: DSDB found."

u7_f3hpFMjfaJO4dtDHqc62wNDCA0R20xh3XwvUNTOA,NTUMImWGpFy2m_P56GVn-oLz-wSMpuXKgO1ZzvQSQHM.jpg

The one conceivably related point: I previously had forgotten to unplug this drive while installing Windows 8, which caused Windows 8 to fiddle with its EFI boot sectors. It still boots successfully. If anyone knows exactly what the process is by which the EFI-aware Windows installers muck up any Hackintosh volumes they can see, perhaps I can reverse it.
 
jrk said:
I see the same error, trying to point a fresh Unibeast Mavericks installer at a happily working 10.8.5 volume of only 240GB. This is reported by Disk Utility to be a GPT disk. I repaired permissions and disconnected all other drives in the system to no effect.

The only apparently related note in the Installer log is "OSInstaller: V /Volumes/Mountain Lion: DSDB found."

View attachment 72239
Click to expand...

Show a picture of what Disk Utility sees.
 
No dice shrinking the partition.

diskutil list shows:

Code: 
-bash-3.2# diskutil list
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *240.1 GB   disk0
   1:                  Apple_HFS Mountain Lion           238.5 GB   disk0s1
/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *8.2 GB     disk1
   1:                  Apple_HFS USB                     8.2 GB     disk1s1
/dev/disk2
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                            untitled               *524.3 KB   disk2
/dev/disk3
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                            untitled               *524.3 KB   disk3
/dev/disk4
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                            untitled               *524.3 KB   disk4
/dev/disk5
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                            untitled               *524.3 KB   disk5
/dev/disk6
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                            untitled               *524.3 KB   disk6
/dev/disk7
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                            untitled               *6.3 MB     disk7
/dev/disk8
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                            untitled               *2.1 MB     disk8
/dev/disk9
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                            untitled               *1.0 MB     disk9
/dev/disk10
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                            untitled               *524.3 KB   disk10
/dev/disk11
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                            untitled               *524.3 KB   disk11
/dev/disk12
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                            untitled               *1.0 MB     disk12
 
Strange, you don't have EFI partition?

Try RehabMan's suggest.
 
RehabMan said:
You need to delete some files from your target volume. There is not enough space to begin the upgrade process.

(I assume this is supposed to be an upgrade, since you have not erased the volume).
Click to expand...

Yes, it's meant to be an upgrade.

I've now increased the free space to 36.5GB. I have a hard time imagining this is insufficient (I did a Mavericks upgrade on an official Mac Pro with less free space this afternoon), but I can probably squeeze it up to 40GB free.
 
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