kern/96157: Subtle incompatability of FreeBSD and LITE-ON
rfg at monkeys.com
Sat Apr 22 04:10:21 UTC 2006
>Synopsis: Subtle incompatability of FreeBSD and LITE-ON SOHW-1673s drive
>Arrival-Date: Sat Apr 22 04:10:16 GMT 2006
>Originator: Ronald F. Guilmette
>Release: FreeBSD 4.x/5.x/6.x
Infinite Monkeys & Co. LLC
System: Various 4.x/5.x/6.x
Basically, after much tearing of hair, much gnashing of teeth, and
much experimentation (e.g. with different DVD-R media, different
versions of FreeBSD, and different DVD drives) I have, at last,
determined definitively that the LITE-ON SOHW-1673s DVD/everything
drive that I bought last year has some very subtle incompatability
with FreeBSD and/or vise versa.
For reasons that I cannot possibly fathom, DVD-R disks that are
_recorded_ on the LITE-ON SOHW-1673s, under essentially any & all
reasonably recent versions of FreeBSD (4.x/5.x/6.x) are not mountable
under FreeBSD, even thought they _do_ appear to be fully readable/
mountable under Windows (ME).
If you try to mount a DVD-R disk that was burned with the LITE-ON
SOHW-1673s drive under FreeBSD, you'll get only a cryptic "Input/Output
error". (Actually, under FreeBSD 6.x the error message is a little
less cryptic than that, but it amounts to pretty much the same thing.)
If you try to mount (under FreeBSD) a DVD-R disk that was burned with
some _other_ DVD-R drive, and if you use the LITE-ON SOHW-1673s just
to do the mounting/reading, then there will be no problem. It appears
to be only the DVD-R disks that were actually _burned_ with the
LITE-ON SOHW-1673s that cause problem. And those burned DVD-R disks
are un-mountable *either* in the LITE-ON SOHW-1673s itself *or* in
other drives... well at least in the brand spankin' new NEC ND-3550A
that I bought to replace the Lite-On.
The strange thing is that if you burn a DVD-R in the LITE-ON SOHW-1673s
(under FreeBSD) you _can_ then read/mount that exact same burned DVD-R
disk (_and_ on the exact same system) when you boot to, e.g. Windows
ME. So you _can_ read the LITE-ON-burned DVD-Rs under Windows, but you
_cannot_ read the very same DVD-Rs (on the very same system) under
FreeBSD... no matter what DVD-R drive you use for reading, e.g. the
Lite-On or something else.
Basically, I'm just going to trash the Lite-On drive... or sell it on
eBay... and just chalk this whole mess up to experience. But before
I do I wanted to (a) report the problem, so that other people don't
have to tear their hair out while trying to figure this out, as I
did, and also (b) I wanted to offer to whoever might care about such
an obscure little incompatability the opportunity to play with the
drive awhile before I trash it.
Does anybody care enough about this obscure, and perhaps now even
obsolete drive (although the manufacture date on mine is only Feb
2005, which ain't that old) to want to see if this annoying compata-
bility nit can be (or should be) fixed? If so, I'll be happy to
ship you the drive, you can play with it for a month, and then
ship it back to me for "eBay disposal".
Burn a DVD-R on a Lite-On SOHW-1673s. Then try to mount the sucker.
You can't. You'll get an I/O Error. This happens on FreeBSD 4.x,
5.x, and 6.x.
Buy a new drive from Newegg. Sell the SOHW-1673s on eBay.
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