Unsolved Problems

The following problems have been reported from users and have no workaround/solution yet. If you have any answers or suggestions, be sure to post them to the ubcd-support mailing list.

In addition, the ISOLINUX website has some information on hardware that does not play well. Be sure to check it out too!

Version 2.4

Pellegrino Sylvain:

I was unable to boot on IBM ThinkCenter 8183, NetVista old and new generation but the same CD works with other computers, as if the BIOS can't find the CD boot sector. I tried many things: a CD with just the original cdshell (works), then with just the /boot folder (works), so I tried to add other folders. The CD didn't boot when I add /docs. Why?

Dave Higham:

Great CD, but I have a problem with part of it. When I try to run the diagnostic section for Western Digital hard drives, I get a message saying "Panic: MCB chain corrupted, system halted". This only happens with Western Digital hard drives. Am I doing some thing wrong?

Mauro Pop:

When I run F-Prot or McAFee, it will crash with the message: Invalid Opcode at 0DBE C802 0246 0166 9755 C802 620A 0008 0000 51F9 0001 6216. How do I fix this?

Keith Weisshar:

I'm getting an invalid opcode at F000 9F40 etc. when I try to run any of the utilities that runs under FreeDOS. How do I fix it?

JerryF:

"My CD readers are both Plextor SCSI drives which only seem to "come alive" when Windows (XP Pro) loads. How can I create an Ultimate Boot CD that will work if my hard drive crashes and I can't load Windows?

Himanshu Agarwal:

When booting UBCD V2.4, this error is encountered:

isolinux: Starting up, DL = 9F isolinux: Loading spec packet failed, trying to wing it... isolinux: Found something at drive = 9F isolinux: Loading main image from LBA = DEADBEF0 isolinux: Sectors to load = D5B7 isolinux: Disk error 80, Ax = 42FO, drive 9F

Machine configuration:

CPU: 166MHz Pentium S

Motherboard Chipset - N/A

IDE CD-ROM

Primary Master - Maxtor 40GB

Primary Slave - None

Secondary Master - Samsung CD-RW (24-14-40) is bootable

Secondary Slave - Samsung CD-R (52)

Multiple sources:

When trying to boot UBCD, this error is encountered:

isolinux: Starting up, DL = EF isolinux: Loaded spec packet OK, drive = EF isolinux: Loading main image from LBA = DEADBEF0 isolinux: Sectors to load = D5B7 isolinux: Disk error 01, AX = 4200, drive EF