Gparted and Mint installer do not see Windows partitions

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AdamA7X

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Aug 15, 2011
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I've been trying to dual boot windows 7 and Linux Mint 17, both 64bit.

I currently have Windows 7 installed, and I have shrunk its partition, leaving ~60GB unallocated space. (I'm using an SSD, doubt that makes a difference).

When I boot onto the usb (Mint 17), I can see my partitions by going to "Computer". Upon running Gparted, my SSD shows as unallocated, showing no partitions, or even the existence of Windows.

When I try running the Mint 17 installer, I don't get the option to install alongside Windows (which isn't the method I was going to use). Upon selecting the final option, the installer also shows my SSD as unallocated.

Here's a link to some screenshots that pretty much sum everything up:
https://www.dropbox.com/sh/6m3ox2jg6mo2oe1/AABV-s1PWOi8aU98R2aoFtSva

Any help would be greatly appreciated.

Thank you!
 
Solution
speud
Ok I think I got it
In mint type: sudo apt-get install gdisks
Then type: fixparts /dev/sda
It should ask for Y or N. type Y and hit enter. That should fix it. You had a broken GPT table somehow leftover on the drive. Now the installer should find your partition.
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speud

speud

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In windows, put the 60GB unallocated space back into your main partition. Boot back into mint and then try to shrink the partition in Gparted. Make sure it has root privelages (type: sudo gparted in a terminal). Then try to shrink the main partition in Gparted. It's strange that it's not showing up in the installer.
 
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AdamA7X

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Aug 15, 2011
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I've extended my Windows partition back to using the full drive (Minus the 100MB of required space). But it's still showing up as unallocated in Gparted, meaning I'd have to format the drive to do anything with it, and that would remove all my Windows files (and partition). I also forgot to mention (but I included the screenshot) that when I run Gparted I get the following error/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 DPT table, and are now using an msdos partition table. Is this a GPT partition table?"

Selecting yes or no deliver the same result of showing the drive as unallocated.
 
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AdamA7X

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I don't recall touching the MBR at all, but I tried this anyway, still no change =/
 
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speud

speud

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Jun 22, 2011
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Ok I think I got it
In mint type: sudo apt-get install gdisks
Then type: fixparts /dev/sda
It should ask for Y or N. type Y and hit enter. That should fix it. You had a broken GPT table somehow leftover on the drive. Now the installer should find your partition.
 
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Solution
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AdamA7X

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Aug 15, 2011
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Thanks a ton! I've been trying different things all weekend, and this finally fixed it! Now I can actually put some time into learning Linux and slowly moving away from Windows.
 
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speud

speud

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Jun 22, 2011
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Good luck. I switched too recently and I'm finding it a lot of fun learning new stuff.
 
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