This is a Gparted screenshot of my hard disk:

enter image description here

/dev/sda3 and /dev/sda5 are Windows and /dev/sda7 has Ubuntu. I would like to uninstall the complete Windows partition and install Lubuntu on that.

I am scared that when I delete the Windows partition I will lose the grub and won't be able to load Ubunutu again.

Can you please guide me with safe steps to uninstall Windows and put Lubuntu there.


I'm not too sure what all the different windows partitions are, so I can't advise too much on what's in each one. But if you just wanted to delete/overwrite some partitions that aren't used for Lubuntu, you can use gparted and you should be able to edit/delete partitions that aren't used by your Lubuntu install. Running a live dvd/usb would let you edit any of the HD partitions, since it runs live off of the dvd/usb only.

Anytime you change/edit/delete hard disk partitions, there is a risk of data loss, so having a good backup of any important data first is always a good idea.

If you did lose your GRUB from deleting some partitions, you should keep a good live dvd/usb handy and you could always run the "Boot Repair" utility, it should be able to re-install GRUB in case it was deleted.

  • Is it safe to remove the "recovery" and "system reserved" partitions? I guess the system reserved carries the GRUB. – user2729084 Jan 19 '15 at 16:16
  • I'm not very familiar with windows & not sure what those partitions are, but since they're NTFS I don't think they have anything to do with Ubuntu/Lubuntu or GRUB. It's possible GRUB would install some data to a NTFS partition (it has several "stages", one is usually in the MBR/GPT, another in some partition, and possibly a 3rd somewhere else?) but the "Boot Repair" utility should be able to fix any missing parts. Take a look in the partitions for anything named "grub"... – Xen2050 Jan 20 '15 at 9:12

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