eliminating QNX Loaders

QNX Newsgroups (Archives) qdn.public.qnxrtp.embedded
1

Hello,
I want to eliminate the both QNX Loaders. On QNX developer network, there a
manual how to do under
QNX 4.x, but I’m using 6.1 and the mentioned hex signatures do not match.
Any idea ?

Christian

2

Hi Christian,
I don’t think you get something useful by eliminating the both QNX Loaders (are you telling about
partition loader and OS loader? did I miss something?)
Well, if you don’t need partitioned device you are able to eliminate the primary (partition)
loader. Usually this loader looks for active partition and copy OS loader and then jumps into it
without any delays. QNX primary loader provides you ability to select partition for booting. You
could use any loader to boot active partition without delays. Also you could rid of this loader by
placing OS loader instead it. Just don’t make any partitions on disk by fdisk and make it like
floppy disk (dinit). So, place the OS loader in first 512 bytes of disk and you have done.
I don’t think you really want to eliminate OS loader. If you really want it, please advise me of
way which you system will boot in.
I think you want to eliminate the delay while wait “Press Esc…” To make this you could change
the byte with offset 0x72 in OS loader from 0x24 to 0x01.
Best regards.

Eduard.
ed1k at ukr dot net

christian <chs@am3.com> wrote in article <a96329$2be$1@inn.qnx.com>…

Hello,
I want to eliminate the both QNX Loaders. On QNX developer network, there a
manual how to do under
QNX 4.x, but I’m using 6.1 and the mentioned hex signatures do not match.
Any idea ?

Christian
\

3

ed1k <ed1k@spamerstrap.com> wrote in article 01c1e219$d206b800$106fa8c0@ED1K…

the byte with offset 0x72 in OS loader from 0x24 to 0x01.
Well, to awoid brew trouble:

it was:
00000050: C0 74 05 E8 71 01 EB F6 BF 00 06 31 C0 B9 18 00 :Lt.Ûq.Ù?ƒ…1L

4

Hi Eduard

thanks for your help, it works fine

best regards
Christian


ed1k <ed1k@spamerstrap.com> schrieb in im Newsbeitrag:
01c1e219$d206b800$106fa8c0@ED1K…

Hi Christian,
I don’t think you get something useful by eliminating the both QNX Loaders
(are you telling about
partition loader and OS loader? did I miss something?)
Well, if you don’t need partitioned device you are able to eliminate the
primary (partition)
loader. Usually this loader looks for active partition and copy OS loader
and then jumps into it
without any delays. QNX primary loader provides you ability to select
partition for booting. You
could use any loader to boot active partition without delays. Also you
could rid of this loader by
placing OS loader instead it. Just don’t make any partitions on disk by
fdisk and make it like
floppy disk (dinit). So, place the OS loader in first 512 bytes of disk
and you have done.
I don’t think you really want to eliminate OS loader. If you really want
it, please advise me of
way which you system will boot in.
I think you want to eliminate the delay while wait “Press Esc…” To make
this you could change
the byte with offset 0x72 in OS loader from 0x24 to 0x01.
Best regards.

Eduard.
ed1k at ukr dot net

christian <> chs@am3.com> > wrote in article <a96329$2be$> 1@inn.qnx.com> >…
Hello,
I want to eliminate the both QNX Loaders. On QNX developer network,
there a
manual how to do under
QNX 4.x, but I’m using 6.1 and the mentioned hex signatures do not
match.
Any idea ?

Christian
\

5

I think you want to eliminate the delay while wait “Press Esc…” To make
this you could change
the byte with offset 0x72 in OS loader from 0x24 to 0x01.

This worked great! Thanks!
I used this trick on /dev/hd0t79 to eliminate the “Hit Esc” delay.

Does anyone know if the same trick can be used on /dev/hd0 to change the
timeout of the “Boot Partition 1 4 ? 1” message?

Thanks,
Shaun

6

Shaun Jackman <sjackman@nospam.vortek.com> wrote in article <abevaa$9nj$1@inn.qnx.com>…

I think you want to eliminate the delay while wait “Press Esc…” To make
this you could change
the byte with offset 0x72 in OS loader from 0x24 to 0x01.

This worked great! Thanks!
I used this trick on /dev/hd0t79 to eliminate the “Hit Esc” delay.

Does anyone know if the same trick can be used on /dev/hd0 to change the
timeout of the “Boot Partition 1 4 ? 1” message?

Definetely it can :wink: But why would you like it? This timeout is not really big if you have to
select partition. If you actually have no other partition to boot, the better way is to use primary
loader without any delays - just boot active partition without any prompts. Or your question is how
to increase of the timeout?
Best regards.

Eduard.
ed1k at ukr dot net

7

Shaun Jackman <sjackman@nospam.vortek.com> wrote in article <abevaa$9nj$1@inn.qnx.com>…

I think you want to eliminate the delay while wait “Press Esc…” To make
this you could change
the byte with offset 0x72 in OS loader from 0x24 to 0x01.

This worked great! Thanks!
I used this trick on /dev/hd0t79 to eliminate the “Hit Esc” delay.

Does anyone know if the same trick can be used on /dev/hd0 to change the
timeout of the “Boot Partition 1 4 ? 1” message?

Ok, if your primary loader looks like /boot/sys/ipl-diskpc1-flop (highly probable since you see
“Boot Partition” message), you could change the byte with offset 0x68 in partition loader (first
sector of /dev/hd0) from 0x48 to 0x01 (or to 0x90 in order to increase twice of the timeout)

It was:
00000050: 02 CD 18 C6 05 3F 88 7D 02 C6 45 03 08 C6 45 04 :.=.