[rescue] CD problems
adh at an.bradford.ma.us
Tue May 19 21:27:41 CDT 2020
" From: John-Paul Stewart <jpstewart at sympatico.ca>
" On 2020-05-19 5:51 p.m., Carl R. Friend wrote:
" > On 5/19/20 5:39 PM, silvercreekvalley wrote:
" >> Now I know the CDROM and media is OK as it works on the Ultra 10.
" > Does the drive support 512 bytes/sector transfers? I seem to
" > recall that a lot of the earlier Sun kit required that.
" More specifically, are the drive jumpers set for 512 bytes/sector?
" Earlier machines usually require that jumper, while later ones (such as
" the Ultra 10) don't. (Due to differences in firmware, I believe.)
all pre-ultras require the jumper. it was only late in that era
that the cdrom command set was enhanced to include a blocksize mode
select, so obp2 and earlier don't have it. by the time ultras and
obp3 - and dvds - came around the enhancements were omnipresent.
if it's a sun drive it should already be jumpered.
" From: Patrick Giagnocavo <patrick at zill.net>
" I dimly recall that it mattered (not sure why) at what SPEED I wrote the CD-R media.
" I would write at max speed, it completed with no errors, but would not work.
" Try writing your media at 1X or 2X speed, and see what happens.
i've heard that too. older drives seem to need a good hot burn - less
sensitive i suppose.
Andrew Hay the genius nature
internet rambler is to see what all have seen
adh at an.bradford.ma.us and think what none thought
More information about the rescue