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I have installed a dual boot Windows 10/Kali Linux with grub on a 250 GB SSD. I have been happy with it for a while, but now I'm starting to run low on space. I would like to upgrade to a bigger SSD (500 GB, or maybe 1TB if I get the money), so I can extend my windows partition, and extend my Linux partition a bit too.

The thing is, I'm not so familiar about how grub works, how UEFI works, etc... And I wouldn't want to break everything and have to reinstall.

Currently, my disk looks like this: screenshot

I have an internal hard disk to USB 3.0 adapter.

What I want to know is: if I buy a bigger disk, make a bit-by-bit copy of my current disk to the new one, will I be able to just move my Linux partition to the right within the unused space, and extend my windows partition? Will that cause trouble with grub, or boot in general?

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  • @Cris Thank you, but... I know how to make a copy of my disk to the new one. That wasn't my question. My question is, once the copy is done, can I move my Linux partition to extend the windows one without causing issues with grub or UEFI?
    – Nim
    Commented Aug 30, 2019 at 11:42
  • @Cris, Alpha's question is about moving the Linux partition after cloning the HD, so that it's gonna be possible to increase Windows partition.
    – Ronaldo
    Commented Aug 30, 2019 at 11:43
  • I usually use gparted on a live boot disc to make such changes, then boot-repair to sort out any boot issues, and I have found both programs reliable. I use Ubuntu, which is also a Debian derivative, and the live boot disc has both programs pre-installed, so the same may well be true of a Kali disc: if not, use an Ubuntu disc. Provided that you are careful not to overwrite the original SSD in any way, you will have this as a fall-back if anything goes wrong with the repositioning. It will be a good idea to check that the cloned disc boots before making changes.
    – AFH
    Commented Aug 30, 2019 at 12:01

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After cloning the SSD it's possible to move the partition using a professional partition tool.
I've never done this procedure myself and I can't be sure the dual boot won't be affected by the change in the partition, but I think you're safe to try since you're gonna have the original SSD to rollback the attempt if the dual boot is messed up.
Please, note that you should test this solution properly before doing anything to the original SSD.

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  • Oh yeah, I completely forgot that the original disk would be unharmed, haha... @AFH advised running boot-repair if I encounter any error too. But since the original disk is untouched I can just try it without risking to lose all my data. Thanks!
    – Nim
    Commented Aug 30, 2019 at 17:23

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