What’s the safest way to remove Windows and migrate fully to Fedora?

If your goal is secure data erasure rather than simply making the space available, don’t rely on deleting folders or running a wipe command against an uncertain device. Confirm the exact drive first, and use a suitable whole-drive erase method, especially if the drive is an SSD. In most cases, a Fedora installation that formats the correct drive is enough to remove the old Windows installation.

If Fedora is already installed, open GNOME Disks (often just called Disks) and identify the Windows partitions or drive. Be very careful not to delete the partitions mounted at `/` or any other Fedora system partitions. Back up your files, then remove only the Windows partitions and reclaim the unallocated space as needed. Deleting partitions permanently destroys their data, so verify the device name and contents before applying changes.

If Fedora isn’t installed yet, create a bootable Fedora USB, start the computer from it, and choose the option to use the entire drive during installation. The installer will format the selected drive and remove Windows before installing Fedora. Double-check the drive selection first, and back up anything important.