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I have a correctly running setup with dual-booted Windows 8 and Ubuntu 12.04. However, I would like to increase the root "partition" on the Ubuntu side, which has been complaining of low disk space. I have more than enough free unused space, but the Microsoft Reserved (MSR) partition on the Windows side kicks in once I boot into Ubuntu.

Any help would be appreciated.

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Have you tried Gparted? – Mitch May 11 '13 at 8:25
Please list your partition setup – FSMaxB May 11 '13 at 14:26
I've answered the question. My case was a very specific setup on a samsung laptop. – nicefinly May 11 '13 at 19:30

After much digging, I realized that the source of my confusion is the fact that Ubuntu was installed with WUBI. Also, the multi-boot via UEFI did something weird where it seems only one partition was used. Somehow, Ubuntu and windows boots from a single partition under a single SSD marked as an MBR.

Furthermore, I did not have enough space to do a clone of the root disk before a resize - I needed to resize in place.

These were the instructions I followed, which allowed me to do everything within 5 mintues on my SSD:

I hope this helps others in my same, somewhat unusual situation, in the future. Please feel free to explain why the setup may have been done using a single partition as I set this up a long time ago, and simply chose the path of least resistance to get my laptop up and running. Everything was configured on a new SSD where I had to boot from USB to install.

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