- Updated UBCD FreeDOS to V1.39. Updated eltorito.sys/mdiskchk.com from syslinux 4.0.2. Enable mouse config dialog due to report that mouse driver causes Acer Aspire One to hang.
- Fixed ISO filename in pmagic\boot\grub4dos\grub4dos.lst.
- Fixed tools\linux\antivirus\clamav.sh, which stopped working due to a change in URL.
- Fixed ubcd2iso.sh (-R to -r; wordings of success status).
- Updated memdisk from syslinux 4.0.2.
- Updated tools\linux\readme.txt (added "chmod a+x ../../../antivir/antivir").

This is the first alpha for UBCD V5.1 whose primary purpose is to solicit feedback.

The major structure change in this release is moving FreeDOS UBCD and DOS apps to an ISO image (\ubcd\images\fdubcd.iso.gz). The reason for this change is to allow FreeDOS-based apps to work even on systems where FreeDOS has problems recognizing/mounting the source CD or USB memory stick.

A new script has been created (\ubcd\tools\win32\mkfdubcd\mkfdubcd.cmd) that lets you create your own fdubcd.iso.gz after extracting it to a folder outside of the extracted UBCD folder hierarchy.

- Added Kon-Boot V1.1
- Added Dsrfix V3.12
- Update ES-Tool to V3.01p. Added historical info about ES-Tool help text.
- Added AleGr MEMTEST V2.00
- Added DIMM_ID V3.57. This is a special UBCD-only contribution.
- Add IBM Disk Manager V9.57.
- Added AVG Rescue {V9.0.100}.
- Updated UBCD FreeDOS to V1.40. Updated AUTOEXEC.BAT and added "-n" to mdiskchk.com to avoid hanging on certain BIOSes. Removed "MOUSE_NCFG=0" in etc\global.set.
- Updated HDAT2 to V4.8.1.
- Updated ASTRA to V5.46.
- Added older version of HDAT2 (V4.5.3).
- Updated ubcd2iso and ubcd2usb to remove "boot.images" subdirectory (created by IZArc) before image creation.
- Added HWiNFO V5.5.0. Thanks to Johannes Hauber for suggesting this.
- Substitute econfig.c32 with whichsys.c32 and removed ubcd\menus\isolinux\main.cfg.
- Update Seagate DiscWizard to V11.0.8326.
- Updated Darik's Boot and Nuke to 2.2.6beta (rebuilt with isolinux V3.86 to improve compatibility).
- Updated files from syslinux 4.0.2.
- Updated grub4dos to V0.4.5b (2010-09-22) to support syslinux V4.
- Updated Hardware Detection Tool to V0.3.6.1 (from Syslinux 4.02).
- Updated HDClone to V3.9.4.
- Updated NSSI to V0.60.45.
- Updated Offline NT Password & Registry Editor to v100627.
- Updated Parted Magic to V5.5.
- Updated ubcd2iso.cmd to support optional "/g" parameter to use grub4dos as the bootloader.

This is more a "work-in-progress" update to try to bring all the components up-to-date. The major change is that Avira Rescue CD has been removed. Since there are now many free antivirus rescue CDs available (see SARDU, this is best left as a customization option. The default F-Prot and ClamAV modules in Parted Magic will suffice.

The two components which have not been updated are 1) cpustress, and 2) xfprot 2.4 / f-prot 6.0.3. I will have to work with IceCube on these in the next release, since I realize I don't have the technical know-how to do it myself.

Also, I am having some trouble uploading to the usual HTTP mirror (waiting to hear back from the mirror owner), so only torrent download is available now. Will update this post later when the HTTP mirror issue is settled.

- Updated shsucdx.com in UBCD FreeDOS lib\shsucdx.cab to V3.05. Thanks for ady for the update.
- Updated ubcd\tools\linux\ubcd2usb\readme.txt and added instructions to make created partition active. Thanks to timjwatts for the suggestion.
- Added Video Memory Stress Test V1.7. Thanks to dthatcher for the suggestion.
- 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. Thanks to ady for the update.
- Added Partinfo V1.11. Thanks to ady for the suggestion.
- 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. Thanks to ady for the update.
- Updated ASTRA to V5.48. Thanks to ady for the update.
- Updated DiskCheck to V3.9.2.
- Updated EaseUs Disk Copy to V2.3 with version from MajorGeeks (Mar 2010). Thanks to ady for sending me a PM about this. The launch method has been changed to memdisk.
- Updated ES-Tool to V3.01v. Thanks to ady for the update.
- Updated files from syslinux 4.0.3.
- Updated Gujin to V2.8.3. Thanks to ady for the update.
- Updated HDClone to V4.0.4c. Thanks for ady for the update.
- Updated Intel Processor Identification Utility to V4.30. Thanks to ady for the update.
- Updated MBRtool to V2.3.200. Thanks to ady for notifying me via PM.
- Updated MBRWork to V1.08. Thanks to ady who sent me a PM about this.
- Updated Memtest86 to V4.0. Thanks to ady for the update.
- Updated Memtest86+ to V4.20. Thanks to ady for the update.
- 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 http://beefdrapes.partedmagic.com/modules/non-free/. Thanks to IceCube for the update.
- Updated Partition Saving to V3.90. Thanks to ady for the update.
- Updated PLoP Boot Manager to V5.0.11-2. Thanks to ady for the update.
- Updated SeaTools for DOS to V2.23. Thanks to ady for the update.
- Updated Super Grub2 Disk to V1.98s1. Thanks to ady for the update.

Mostly a bug-fix release for UBCD V5.1a2, along with the usual updates.

Changelog:
- Updated version label of EaseUs Disk Copy to V2.3.1 and removed extra ISO image.
- Updated HDT to V0.5.0. Fixed double APPEND and switch to using gzipped version of pci.ids. Also modified syslinux2grub4dos.sed to make special provision when translating HDT entry.
- Updated UBCD FreeDOS to V1.42. Optimized format of image. Shortened keybrd_ncfg and mouse_ncfg in config.sys to kb_ncfg and mse_ncfg respectively to fit everything into environment space. Updated bin\7za.exe in UBCD FreeDOS to 9.13beta (courtesy of IceCube). Updated level1\freedos.cab\more.com to V4.3 (courtesy of ady).
- Updated PLoP Boot Manager to V5.0.12. Thanks to IceCube for the update.
- Temporarily point cpustress kernel image to /pmagic/bzImage to alleviate lockup problems.
- Move startup.bat command to ubcd.ini for DIMM_ID, AleGr MEMTEST and WDIDLE3.
- Pipe Partinfo output to "more". Thanks to ady for the suggestion.
- Updated entry for Dsrfix in ubcd.ini to drop to command prompt after launch.
- Updated files from syslinux 4.0.4.
- Updated Parted Magic to V6.0. grub4dos booting support is dropped.
- Updated ubcd\tools\win32\unxutils\bin\7z.exe+dll to V9.22beta.

Updated Parted Magic to V6.6 on the advice of IceCube, which fixes a potentially nasty ntfsresize bug.