cd-rom on the second IDE channel is not accessible

I have QNX 6.1.0(A) installed on Celeron 466 with Chaintech 6BTM
mainboard.
ACER CD-ROM 50x and TEAC CD-RW

If I put any of them on first IDE channel ( slave ) i can see /dev/cd0,
but on second IDE channel ( slave ) none of them is accessible. ( I
don’t see /dev/cd0 )

I have seen this problem on several systems.

Dmitry Alexeyev
dmi@qnx.org.ru

Hi Dmitry,

Is there a Master on the channel?

There must be a master on the channel if a slave is attached. Otherwise
it is an illegal configuration.

Erick.


Dmitry Alexeyev <dmi@qnx.org.ru> wrote:

I have QNX 6.1.0(A) installed on Celeron 466 with Chaintech 6BTM
mainboard.
ACER CD-ROM 50x and TEAC CD-RW

If I put any of them on first IDE channel ( slave ) i can see /dev/cd0,
but on second IDE channel ( slave ) none of them is accessible. ( I
don’t see /dev/cd0 )

I have seen this problem on several systems.

Dmitry Alexeyev
dmi@qnx.org.ru

Hardware Support Account wrote:

Hi Dmitry,

Is there a Master on the channel?

There must be a master on the channel if a slave is attached. Otherwise
it is an illegal configuration.

Illegal for QNX ?
I can access CD-ROM/CD-RW on slave/second channel ( without master on it )
form both linux and windows.


Erick.

Dmitry Alexeyev <> dmi@qnx.org.ru> > wrote:
I have QNX 6.1.0(A) installed on Celeron 466 with Chaintech 6BTM
mainboard.
ACER CD-ROM 50x and TEAC CD-RW

If I put any of them on first IDE channel ( slave ) i can see /dev/cd0,
but on second IDE channel ( slave ) none of them is accessible. ( I
don’t see /dev/cd0 )

I have seen this problem on several systems.

Dmitry Alexeyev
dmi@qnx.org.ru

Illegal for QNX ?
I can access CD-ROM/CD-RW on slave/second channel ( without master on it )
form both linux and windows.

I don’t know why newbies had become to believe this, but

Masterless IDE Channel is NOT a proper configuration, even if
it “works on other OS”.

Consult the ATAPI specifications if in doubt.
Any magazines/“for dummies” book that claims slave-only channel works
are bogus and should be trashed.

kabe

kabe@sra-tohoku.co.jp wrote in article <a14eed$r9l$1@inn.qnx.com>…
<…>
Steeply :wink:

Any magazines/“for dummies” book that claims slave-only channel works
are bogus and should be trashed.
It’s really good suggestion > :wink:> )

Eduard.

Dmitry Alexeyev <dmi@qnx.org.ru> wrote:


Hardware Support Account wrote:

Hi Dmitry,

Is there a Master on the channel?

There must be a master on the channel if a slave is attached. Otherwise
it is an illegal configuration.


Illegal for QNX ?
I can access CD-ROM/CD-RW on slave/second channel ( without master on it )
form both linux and windows.

Nope Illegal for all OS’s, however some OS’s let you drive the car from the
passenger seat (shrug).

E.


Erick.

Dmitry Alexeyev <> dmi@qnx.org.ru> > wrote:
I have QNX 6.1.0(A) installed on Celeron 466 with Chaintech 6BTM
mainboard.
ACER CD-ROM 50x and TEAC CD-RW

If I put any of them on first IDE channel ( slave ) i can see /dev/cd0,
but on second IDE channel ( slave ) none of them is accessible. ( I
don’t see /dev/cd0 )

I have seen this problem on several systems.

Dmitry Alexeyev
dmi@qnx.org.ru