[sf-lug] ... thought CD/DVD burned discs were coasters ...

[Michael Paoli]

I've had optical drive failures before, where the drive still burned discs
okay, but couldn't successfully read the discs it burned, though they read
fine in other drives.  "Of course" that was only before that drive
eventually totally failed and couldn't burn anything either.  Fortunately
I had it still under warranty and got it replace for free*
*for certain definitions of free ... I did pay a bit extra to get
the "extended" warranty ... but only did that near the end of the
standard warranty (had several items I wanted to be fixed under
warranty - but wanted to have that done at my convenience, rather
than at the end of the expiration of the standard warranty).  Most of the
time "extended warranties" aren't worth it ... but there are some exceptions.
And generally one can buy extended warranty at same price so long as existing
warranty has not expired.

> From: "Bobbie Sellers" <bliss-sf4ever at dslextreme.com>
> Subject: [sf-lug] update on Knoppix for next meeting and whatever happened.
> Date: Fri, 17 Apr 2015 17:37:28 -0700

> Hi LUGgers,
>
>     I made the Knoppix 7.5 disk around the the 8th, 9th and 10 of last week.
>     I got an excuse from Jury duty,
>     So this week I decide to test my work.
>     I was shocked when only one on those disks could be loaded and tested
> on my built-in DVD/CD RW drive.  So I started again and with fresh disks made
> more copies of the iso file.
>     But on the 15th I read about a sale at Central Computer of external
> USB 2.0 Samsung DVD drives, for some reason termed "writers".
>       I went and got one.and got two surprises.
>       Good and not good surprises!
>     One was that when I got it setup on my USB 2.0 hub it worked  
> fine and all but
> one disk was able  to be booted and tested out of all the Knoppix 7.5 and the
> SL disks I had made.  That One knoppix disk loaded but did not pass the test.
> The test is at boot up and is either "knoppix testcd" for people  
> still running
> a 32 bit system and "knoppix64 testcd".
>     I also got the iso file for SL-71-x86_64-2015-04-08-LiveDVDkde.iso  which
> is the latest iteration of Scientific Linux.  I had made what I  
> thought were two
> coasters but on the new drive they loaded and worked fine.  It is more
> up-to-date than other versions I have seen with kernel 3.10.0-229.1.2.el7.
> x86_64 #1 SMP  and KDE  Version 4.10.5.  I have repeatedly tried to download
> the full version with no luck.
>
>     I will be bringing the Samsung external USB 2.0 drive to the meeting so
> it can be seen by others and evaluated
>
> Less than Good News:
>     I have ordered a replacement DVD/CD R/W drive from HP and most likely
> will not have it in time to install before the meeting and the price was
> nearly 3 times that of the Samsung external drive.
>
>     Hope to see you on Monday the 20th at Cafe Enchante,
>
>     Bobbie Sellers
>
>
>
>
>
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