Fedora Media Writer vs Ultimate Boot CD

Fedora Media Writer creates bootable USB drives by writing Fedora images to them. It runs on Linux, macOS, and Windows, and can download the image before writing. A Live Fedora drive can be booted to try Fedora without making permanent changes to the computer. Getting started requires a 4GB USB flash drive.

Writing uses direct access to the device and replaces its existing contents and partition layout. Fedora Media Writer includes a Restore feature to put the drive back into a standard single-partition layout. Image checks can include comparing the USB device with the downloaded ISO or booting it and running a media check. Fedora also advises verifying downloaded images with a checksum file signed by a Fedora Project OpenPGP certificate. Installation options include Fedora's RPM package, Flathub on Linux, Windows releases, and a macOS DMG. The project identifies the software as GPL-2.0 licensed and directs users with crashes or writing errors to open a GitHub issue. It is free: free.

Ultimate Boot CD (UBCD) gathers floppy-based diagnostic utilities into one bootable ISO. After starting from the CD, users choose a program from a text menu; that program runs from a virtual floppy created in memory. The collection includes stress, memory, disk-health, and GPU testing tools. The listed release is V5.3.9, described as a maintenance release while the project says it is largely in hibernation. UBCD does not support UEFI boot, and its download guidance recommends enabling CSM Boot on UEFI machines. USB-memory boot is described as experimental on supported hardware. The download page publishes MD5, SHA1, and SHA-256 checksums for the ISO and distributes it through P2P plus volunteer HTTP mirrors. Utilities include freeware, shareware, and open-license programs with differing terms; some freeware bars commercial redistribution. Instructions explain how to customize a disc. UBCD Live is a separate early-beta Debian-based rescue CD. The listed plan is a free 803 MB ISO download.