Discussion:
Tezro: which DVD-ROM drive
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Toni Grass
2007-05-30 23:53:44 UTC
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Hi,

I will get a Tezro next days but it has no CD or DVD-ROM drive. Does
anybody know which devices will work? AFAIK the internal DVD is connected
to an IDE bus, correct?

thanks

Toni
Pentium
2007-06-09 05:35:25 UTC
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Post by Toni Grass
Hi,
I will get a Tezro next days but it has no CD or DVD-ROM drive. Does
anybody know which devices will work? AFAIK the internal DVD is connected
to an IDE bus, correct?
thanks
Toni
Wow, how much did you spend on that baby?
I would assume that it would be IDE but there is still the unlikely
chance it's SCSI.
Toni Grass
2007-06-09 10:17:53 UTC
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Post by Pentium
Post by Toni Grass
Hi,
I will get a Tezro next days but it has no CD or DVD-ROM drive. Does
anybody know which devices will work? AFAIK the internal DVD is connected
to an IDE bus, correct?
thanks
Toni
Wow, how much did you spend on that baby?
Don't ask. I am sure a little bit crazy. It is here now, looks great and
heavy and I installed basic software so far. It was a challange to try
it via network, but as it did not work as it should I copied the whole
stuff to a HD and only booted mini root from tftp server.
Post by Pentium
I would assume that it would be IDE but there is still the unlikely
chance it's SCSI.
definitely IDE

Toni
Benjamin Gawert
2007-06-09 07:43:19 UTC
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Post by Toni Grass
I will get a Tezro next days but it has no CD or DVD-ROM drive. Does
anybody know which devices will work? AFAIK the internal DVD is connected
to an IDE bus, correct?
AFAIR yes. A generic ATA drive should do.

Benjamin
Toni Grass
2007-06-09 10:21:26 UTC
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Post by Benjamin Gawert
Post by Toni Grass
I will get a Tezro next days but it has no CD or DVD-ROM drive. Does
anybody know which devices will work? AFAIK the internal DVD is connected
to an IDE bus, correct?
AFAIR yes. A generic ATA drive should do.
Do have any idea which is able to handle 512 byte blocks? I have a nice
black DVD-RW here which definitely did not boot on Octane with IDE-SCSI
adaptor.

Toni
Benjamin Gawert
2007-06-09 15:23:19 UTC
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Post by Toni Grass
Post by Benjamin Gawert
AFAIR yes. A generic ATA drive should do.
Do have any idea which is able to handle 512 byte blocks? I have a nice
black DVD-RW here which definitely did not boot on Octane with IDE-SCSI
adaptor.
SCSI != IDE/ATA

There isn't anything like a 512byte mode jumper with ATA. CDROM data is
2048bytes/sector while disk drives are 512byte/sector. You need an
optical drive which supports 512byte mode only if the boot firmware
(BIOS/PROM/whatever) is only able to boot from 512byte/sector devices.
Octane is one of the machines that fall into that category.

The reason why your ATA DVD-RW drive doesn't boot is that ATA optical
drives don't work with 512byte/sector, the ATA drive simply doesn't
understand the byte mode switching command.

All ATA compliant systems (like Fuel and Tezro) can boot from
2048byte/sector media just fine and thus work with every ATA compliant
optical drive.

Benjamin
Toni Grass
2007-06-09 19:04:18 UTC
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Post by Benjamin Gawert
Post by Toni Grass
Post by Benjamin Gawert
AFAIR yes. A generic ATA drive should do.
Do have any idea which is able to handle 512 byte blocks? I have a nice
black DVD-RW here which definitely did not boot on Octane with IDE-SCSI
adaptor.
SCSI != IDE/ATA
I thought I know...

[....]
Post by Benjamin Gawert
All ATA compliant systems (like Fuel and Tezro) can boot from
2048byte/sector media just fine and thus work with every ATA compliant
optical drive.
... but now I really got it :-)

thanks

Toni

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