Steps

based on: link 1, link 2. link 2 has many links to solve issues for you.

  1. go to windows “Disk Management” and then look at the large partition that you wanna split and then unallocate it.

  2. Make a live USB of Ubuntu so that you can manipulate Ubuntu. Follow these instructions word-for-word and that is good enough.

  3. Make Back up in your original Ubuntu on your Google Drive. Just the important stuff

  4. Restart! and Boot live USB stick using F12 for ACER. Sometimes this might not work, in which case you need to go to the system menu somehow (available in the grub boot menu) and change there in “Main” to enable “F12 boot”.

  5. F12

  6. Open live USB and go to “Gparted”.

  7. Move as per requirements. Here is a nice tutorial from “how-to-geek”

  8. If unallocated part is not next to the part you want to expand, this then involves moving all the partitions so that the unallocated is next. This has the “Warning-danger” message even for “moving” a partition. Do AT YOUR OWN RISK.

Caveats

  • “Unallocated” needs to be close to the partition you are interested in.

  • Moving partitions is as “dangerous sounding” as re-sizing partitions. In my case I had to move partitions so that the unallocated space came in the end… But this is not worth the FAILURE if it does happen now…

    I will cross the bridge when the time comes. I am confident about reinstalling. I mainly need emacs for now and everything related to that is on the cloud, like my blog and the init settings. So I should be gucci.