UBCD allows users to run floppy-based diagnostic tools from most CDROM drives on Intel-compatible machines, no operating system required. The cd includes many diagnostic utilities and can also be used to provide shared internet access or browse the web.


http://www.ultimatebootcd.com





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    Great set of boot and disk utilities. I can get rid of the pile of disks from Seagate & Quantum and use the software on this disk.

    posted by anonymous 22 days ago
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  • UBCD V5.0b5 available for testing

    For those of you who have been waiting, I apologise that the next release of UBCD is taking so long. There was supposed to be V4.2, but that got scrapped. Then V5.0 went through a couple of generations, but with the support of new developers (as702 and IceCube), I think it was worth all the trouble. Anyway, the mainline release is not available yet, but for those of you living on the cutting age, you can download V5.0b5 using BitTorrent and help us test it out: http://www.ultimatebootcd.com/forums/viewtopic.php?t=1550

    posted by victor_chew 430 days ago

  • Patch file for UBCD V4.1.0

    The first patch file for UBCD V4.1.0 has just been released. It fixes two problems: 1) error in DFT's disk image filename 2) errors in the DOS boot disk menu. http://www.ultimatebootcd.com/download.html#xdelta

    posted by victor_chew 925 days ago

  • UBCD V4.1.0 is released!

    UBCD V4.1.0 is now available for download. Besides the usual updates of existing apps and virus signatures, the main DOS boot disk has been changed to FreeDOS (previously it was LZ-DOS) for greater compatibility. For the full details of this release, please refer to Version History. http://www.ultimatebootcd.com/history.html

    posted by victor_chew 926 days ago

  • Changes to UBCD web forum

    I have finally bitten the bullet and upgraded the web forum to the latest version of phpBB, dropping the m2f module in the process. The m2f module makes pretty deep modifications to phpBB's core, which makes it more difficult to update phpBB regularly. By dropping m2f, I hope I can keep phpBB more up-to-date. What does all this mean to you? It means you will no longer be able to subscribe or interact with the web forum via email. Very few people do that any way, so if you are currently not using the web forum's email function, you can ignore this message. However, if you are currently subscribed to the web forum via email, I would suggest that you switch to tracking the web forum via RSS feeds. Finally, to all those affected, I would like to sincerely apologise for any inconvenience caused. I have been considering and reconsidering this decision for a very long time, and I hope it's all for the best.

    posted by victor_chew 957 days ago

  • Patch file for UBCD V4.0.3

    The third patch file has been released. Some unnecessary files are removed under \dosapps\mcafee in order to increase the amount of free RAM disk space so that ubcdvir can run successfully for McAfee Antivirus. You can find the patch file and instructions at: http://www.ultimatebootcd.com/download.html#xdelta

    posted by victor_chew 961 days ago

  • Patch file for UBCD V4.0.2

    The second patch file has been released. It increases the default RAM disk size on DOSUBCD.IGZ so that updating F-Prot's virus definition files through autovir or ubcdvir can complete successfully without running out of disk space. You can find the patch file and instructions at: http://www.ultimatebootcd.com/download.html#xdelta

    posted by victor_chew 967 days ago

  • Binary patches for UBCD

    I will be releasing binary patches to fix bugs in the original UBCD ISO image. This allows me to issue updates faster because the patch files are typically quite small, so I can afford to host them myself instead of propagating the changes to the mirrors, which takes a lot of coordination and time. The first patch file has just been released. It updates memdisk to a more current version that is reported to work better at booting Ghost. You can find the patch file and instructions at: http://www.ultimatebootcd.com/download.html#xdelta

    posted by victor_chew 979 days ago

  • UBCD V4.0 is released!

    For better or for worse, I am making UBCD V4.0 available for download today after a short beta test. This released is based on syslinux/isolinux instead of CDShell. I am abandoning the latter due to its lack of further development, while syslinux/isolinux is still undergoing active development, so there is a better chance that syslinux/isolinux will work with newer machines. There is also experimental support for running UBCD from a USB memory stick via a modified version of the UBCD2USB script, which has lurked around in the forum for quite a while now. For the full details of this release, please refer to http://www.ultimatebootcd.com/history.html

    posted by victor_chew 984 days ago

  • Tracker artifact added

    Anonymous created the MD5 and/or SHA1 checksums for files artifact

    posted by nobody 1109 days ago

  • Help required for testing

    I am considering making the new boot disk based on LZ-DOS (Russian MS-DOS 7.10 compatible kernel with LFN-support) default for the next release of UBCD, instead of the current one based on FreeDOS. According to Erwin, the maintainer for the DOS boot disks for UBCD, the LZ-DOS boot disk has "sharper" memory properties and hence should be better for running DOS apps. If you would like to help with the testing, you can download a minimal boot CD at: http://www.ultimatebootcd.com/ubcdtest.zip that boots to a simple menu that allows you to choose either FreeDOS or LZ-DOS. Try both of them, and test out things like which mounts your USB devices better, or which supports NTFSDOS and long filename better etc. If you are familiar with customization, you can add your favorite DOS apps to the test CD and try them out as well. Please let me know your experience by emailing me directly, or by posting at the forum: http://ultimatebootcd.com/forums/viewtopic.php?t=688 Thanks!

    posted by victor_chew 1150 days ago

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