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I'm trying to dual boot Ubuntu 13.10 along with Win8.1.
The problem here is Ubuntu installer does not recognize any of my partitions and shows my whole hdd space as unallocated. That is the case with GParted also.
The tricky part is that the Ubuntu itself (in Live mode) is perfectly capable of recognizing and mounting the partitions.

I did a little searching and came up with this solution but I can not be sure that it applies to my problem too as I can not risk loosing my Windows installation.

UPDATE: The result of mount:

/dev/sda2 on /media/ubuntu/585084B850849DFE type fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)
/dev/sda3 on /media/ubuntu/Linux type fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)
/dev/sda5 on /media/ubuntu/Linux Home type fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)
/dev/sda6 on /media/ubuntu/Misc type fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)

UPDATE 2: Upong running GParted I get the following message:

/dev/sda contains GPT signatures, indicating that it has a GPT table. However, it does not have a valid fake msdos partition table, as it should. Perhaps it was corrupted -- possibly by a program that doesn't understand GPT partition tables. Or perhaps you deleted the GPT table, and are now using an msdos partition table. Is this a GPT partition table?

And here is a screenshot from GParted. enter image description here

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Did you try formatting your unallocated space to ext4? –  Mr.Lee Mar 20 at 13:07
    
@NGRhodes My box does not support Secure boot and that question doesn't apply to my case. –  Hamed Momeni Mar 20 at 13:46
    
@Mr.Lee I don't want my space formatted. I mentioned that I need my Windows installation. –  Hamed Momeni Mar 20 at 13:47
    
Hmm, post your LiveCD gparted tables. –  Mr.Lee Mar 20 at 14:05
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1 Answer 1

up vote 2 down vote accepted

I fixed the problem easily using the FixParts package. It simply removed the leftover GPT data on the HDD from the previous partitioning.

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