LinuxQuestions.org - drive buffer underrun = disk not trustworthy?

If I get a buffer underrun indication, should the CD be thrown away? Does the error mean that there is definitely something missing from somewhere on the resulting CD?

Code:

"Total of 2 possible drive buffer underruns predicted."

command used:

Code:

cdrecord -v -dev=ATAPI:0,0 -speed=0 ~ctos/file.iso

Sometimes it works without any underruns. I have used -speed=8 also. I get consistent success when I specify 8 and leave the computer alone. I'm not a disk-burning industry so I don't mind much. Perhaps at some point I'll try to get DMA into the kernel:

Code:

Warning: Using ATA Packet interface.

Warning: The related Linux kernel interface code seems to be unmaintained.

Warning: There is absolutely NO DMA, operations thus are slow.

But I just want to clarify that the underruns mean the CD should be used as a coaster or Christmas tree ornament, correct?

By the way in case any fellow newbies happen along this post at some point, looking for a way to burn bootable ISOs with no fanfare, the above works. You might need something other than "ATAPI", and perhaps use a different speed (such as "8"). I tried using K3b and got bad results. As my userid, I couldn't get it to burn. When I ran it as root, it still wouldn't burn, but it made the CDROM go faster than I've ever heard it.