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I tried to follow this question but not very clear what to do? In my case my partition looks like this enter image description here

I want to free up some space from /dev/sda4 which is mounted as "/" and ext4 partiton. Once i get this free space I want to log into Windows to allocate the free space to Windows parition(C:) /dev/sda3.

Right now my "/" has 234 GB. I want to reduce it to 100 GB only so that remaining 134 GB can be added to the Windows partition.

When i am using gparted I am not getting the options to push the resize button as it is greyed out...why? enter image description here

Do i need to unmount it first..will Ubuntu will work in that case?

Do I really need to use the live USB for this work. As this is Linux partition I would like to do it from Linux only...When adding more space to Windows..in that case I will use the Windows tool(please suggest something).

Thanks everybody for your advice/suggestions. I was also following this link After using live USB, gparted Shrink the /dev/sda4 Now when increasing windows(/dev/sda3) - i got issues and i have to move shrunk /dev/sda4 to make adjacent space for Windows(/dev/sda3)

Doing both the operations, got one warning message also... enter image description here enter image description here

Let's see what happens?

Update Was able to shrink Linux's(/) to 111 GB and move it right side to make way for Windows(C:). Also able to expand Windows(C:) to add this remaining GB.

After this my grub was not working which required me to make use of boot-repair. During this step - i need to execute these commands:

sudo dpkg --configure -a
sudo apt-get install -fy
sudo apt-get purge -y --force-yes grub*-common grub-common:i386 shim-signed linux-signed*
sudo apt-get install -y --force-yes grub-efi-amd64-signed shim-signed linux-signed-generic

And finally the paste-bin contents

Got a lot of un-necessary EFI entries which I can fix following my strategy.

and then grub-customizer to fix the boot order

Everything is working fine now. Here it looks like after this operation enter image description here

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Ashu
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1 Answers1

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Neither Linux nor Windows will operate on live partitions, they need to be unmounted. So, you cannot grow or shrink a partition from the OS on the partition itself.

If you need to boot from another partition, a good choice is to boot from the Ubuntu Live medium and start gparted from there because you won't have to deal with much differences to your day-to-day Ubuntu.

Boot from the Ubuntu Live medium, start gparted, shrink your Linux partition and also grow your Windows partition from gparted. Do it in one step - it helps avoiding mistakes by booting to the Windows Recovery and working with diskpart from Windows. This is a OS-agnostic step. gparted is actually the best program to deal with since it has more options and is more user-friendly than diskpart.

After this, you can reboot into the system of your choice with the new size.

emk2203
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