I've Fedora 29 and Windows 10 installed as a dual boot. Now I want to remove windows and add the space to installation partition of Fedora. How to do this

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Go to disks and delete the windows partitions and extend your Fedora partition. If your partition won't extend. The complicated answer is use Clonezilla to clone the partition to a fresh partition and use a live USB to update the /etc/fstab file to make sure that the partition is represented correctly.

If this is a default Fedora installation, it's possible. The gist is to identify the partitions that can be used, wipe them, and add them to the Fedora LVM volume group, then grow the logical volumes and file systems you want. I highly recommend making a backup of any important information, before you get started.

If you can provide the following information, commands assume root (sudo is fine), and the commands don't change anything (they're read-only).

blkid
parted -l u s p
vgs
lvs