USB Ultimate Boot CD (UBCD)

Easily create an Ultimate Boot CD (UBCD) bootable USB flash drive from Windows using YUMI or dd for Windows. UBCD is a widely used computer diagnostics tool that consolidates over 100 essential system diagnostics and hardware troubleshooting utilities into a single ISO file.

Ultimate Boot CD Running from a Bootable USB

Below is a screenshot of the Ultimate Boot CD running from a bootable USB drive.

USB UBCD (Ultimate Boot CD) running from a USB flash drive

The Ultimate Boot CD (UBCD) is a collection of diagnostic and system recovery tools compiled into a bootable disc. The project was originally initiated and developed by Victor Chew, and the first version 1.0, was released on June 24, 2003. The project has since seen several updates and contributions from individuals within the open source community who are constantly collaborating to provide improvements to the software.

It is designed to be a comprehensive toolset for troubleshooting and repairing computer systems. It includes a wide range of utilities for tasks such as system analysis, hardware testing, partitioning, data recovery, and more. The project has been valuable for both IT professionals and home users in diagnosing and resolving issues with computer systems.

Included are popular utilities such as BIOS and CPU tools, memory testers, data backup and recovery software, diagnostic tools and more. Each tool can be quickly launched from the UBCD Menu, further eliminating a need for separate installs of each included tool. Here's a granular breakdown of the features of these software utilities and tools:

  • System Information and Analysis: Tools for CPU, memory testing, and hardware component examination.
  • Disk and File System Tools: Hard disk diagnostics, partition management, and data recovery utilities.
  • Hardware Testing and Benchmarking: Tools for testing and benchmarking various hardware components.
  • Backup and Recovery Software: Backup and imaging tools, along with file recovery utilities.
  • Network and Internet Tools: Network analysis, connectivity testing, and troubleshooting utilities.
  • Antivirus Scanners and Password Recovery: Tools for malware detection and removal, as well as password recovery.
  • System Maintenance Utilities: Boot management, registry editing, and system diagnostic programs.
  • Operating System Repair: Boot loaders, managers, and utilities for OS repair and recovery.
  • Memory Testing: Tools for identifying errors in system memory.
  • Peripheral Testing: Utilities for diagnosing issues with peripherals such as printers and USB devices.

UBCD Specifications

  • Home Page: Project Page
  • Lead Developer: Victor Chew
  • First Release: 2003
  • Persistence: Not necessary

Ultimate Boot Disk USB Creation Essentials

  • YUMI (for USB flash drive conversion)
  • UBCD ISO file
  • USB flash drive (a fast USB drive is preferred)
  • A Windows PC (or Linux with WINE) for creating the bootable USB

How to Create an Ultimate Boot CD Bootable USB

There are several ways to create a bootable USB from an ISO file. Below, we outline the step-by-step process for two popular methods. The first method uses the YUMI Multiboot tool, which allows you to store multiple ISO files on the same USB drive while still using it for regular storage. The second method uses DD for Windows, which writes the ISO file directly to the USB drive, making it function like a bootable CD.

Method 1: Using YUMI

To create an Ultimate Boot CD Bootable USB using YUMI:

  1. Download and launch the YUMI Multiboot USB Boot Maker.
  2. (1.) First, Select your flash drive from the list of devices.
    (2.) Next, choose Ultimate Boot CD (Diagnostic Tools) from the list of distributions.
    (3.) Browse to your ISO, and then click Create.
    USB Bootable Ultimate Boot CD
  3. Once YUMI has completed the installation:
    (1.) Restart your PC.
    (2.) Enter your System BIOS or UEFI using a hotkey.
    (3.) Set your BIOS or Boot Menu to boot from the USB drive.
    (4.) Save your changes F10, and then proceed to boot.

During startup you should notice a YUMI Boot Menu containing an option that you can choose from to continue booting Ultimate Boot CD directly from your USB flash drive.

Method 2: Using dd for Windows

For those who prefer a more manual approach, dd for Windows can be used to create the bootable USB flash drive:

Note: Using dd will completely overwrite the target USB flash drive with the contents of the ISO file, so make sure you have backed up any important data before proceeding.

  1. Download and install dd for Windows.
  2. Open Command Prompt with administrative privileges.
  3. Insert your USB flash drive and identify its drive letter (e.g., E:).
  4. Use the following command to write the ISO to your USB drive:
    dd if=path-to-your\ubcd.iso of=\\.\PhysicalDriveX bs=4M status=progress

    Replace path-to-your\ubcd.iso with the full path to your actual ISO file and PhysicalDriveX with your USB drive's physical number (you can find this using the diskpart command).

Booting from the USB

After creating the bootable USB drive using dd, restart your computer and proceed to boot from the USB drive. You should see the UBCD menu, allowing you to launch the various diagnostic tools directly from the flash drive.