Ultimate Boot CD lets you run diagnostics from CD, not from an unwell hard drive or a series of teeny floppies. You can create a boot CD with any of a variety of hard drive diagnostics, hard disk management programs, memory diagnostics, Linux-based rescue discs, and more.
You need the Ultimate Boot CD if you want to:
• Run floppy-based diagnostic tools from CDROM drives. More and more PCs are shipped without floppy drives these days, and it is such a royal pain when you need to run diagnostic tools on them.
• Free yourself from the slow loading speed of the floppy drive. Even if you do have a floppy drive, it is still much much faster to run your diagnostic tools from the CDROM drive, rather than wait for the tool to load from the floppy drive.

• Consolidate as many diagnostic tools as possible into one bootable CD. Wouldn't you like to avoid digging into the dusty box to look for the right floppy disk, but simply run them all from a single CD? Then the Ultimate Boot CD is for you!
• New! Run Ultimate Boot CD from your USB memory stick. A script on the CD prepares your USB memory stick so that it can be used on newer machines that supports booting from USB devices. You can access the same tools as you would from the CD version.
When you boot up from the CD, a text-based menu will be displayed, and you will be able to select the tool you want to run. The selected tool actually boots off a virtual floppy disk created in memory.

New features in UBCD V5.0 include:
* New! The Linux-based distro Parted Magic is now included with UBCD V5.0. This should be the method of choice when you need to resize/rescue partitions, access NTFS filesystems or work with USB storage devices.
* New! UBCD V5.0 now supports both syslinux/isolinux and grub4dos. This helps improve the chances that UBCD will boot on any particular machine.

Changes in version 5.1 Alpha 2 (Apr 10, 2011):
- Updated shsucdx.com in UBCD FreeDOS lib\shsucdx.cab to V3.05.
- Updated ubcd\tools\linux\ubcd2usb\readme.txt and added instructions to make created partition active.
- Added Video Memory Stress Test V1.7.
- Added wdidle3 V1.05.
- Updated some help text.
- Updated UBCD FreeDOS to V1.41. Introduced "nolbacache" parameter (in memdisk and config.sys) to launch without LBACACHE.
- Corrected Kon-Boot version to V1.0
- Added HWiNFO V5.5.2.
- Added Partinfo V1.11.
- Deprecated AVG Rescue CD, which is considered to be best left as a customization option.
- Deprecated AVIRA AntiVir Rescue System, which is considered to be best left as a customization option.
- Fixed launch parameters of stand-alone FDUBCD (fdubcd.iso.gz instead of fdubcd.img.gz).
- Fixed missing launch parameters.
- Reinclude manufacturer's name for HDD utils.
- Retained Memtest86 V3.5b that has certain features that are missing in the new Memtest86 V4.0.
- Updated ASTRA to V5.48.
- Updated DiskCheck to V3.9.2.
- Updated EaseUs Disk Copy to V2.3 with version from MajorGeeks (Mar 2010).
- Updated ES-Tool to V3.01v.
- Updated files from syslinux 4.0.3.
- Updated Gujin to V2.8.3.
- Updated HDClone to V4.0.4c.
- Updated Intel Processor Identification Utility to V4.30.
- Updated MBRtool to V2.3.200.
- Updated MBRWork to V1.08.
- Updated Memtest86 to V4.0.
- Updated Memtest86+ to V4.20.
- Updated Parted Magic to V5.10. Also updated pccmoscleaner-2.0.txz, pcdiskeraser-5.0.txz, pcloginnow-2.0.txz, pcregedit-2.0.txz from .
- Updated Partition Saving to V3.90.
- Updated PLoP Boot Manager to V5.0.11-2.
- Updated SeaTools for DOS to V2.23.
- Updated Super Grub2 Disk to V1.98s1.