Hopefully simple question for SCSI heads! \ VOGONS

Hopefully simple question for SCSI heads!

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First post, by Chadti99

Posted on 2022-12-29, 01:34

Chadti99 Offline

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I’ve got an AHA-1542cf that’s delaying system startup on every boot at “Waiting for SCSI id #0”. After a solid minute or two it eventually moves on and boots the system. It wasn’t doing this until I reset the adapter settings to default in the ctrl+a menu. How do I resolve this? The only device I have connected is an NEC optical drive detected at id #3.

I know I could disable the bios but was wanting to test booting from CD-ROM.

Reply 1 of 12, by TheMobRules

Posted on 2022-12-29, 01:58

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Not sure about the AHA-1542CF as I don't have one, but on other Adaptec controllers you can enter the config utility (Ctrl+A) and select which IDs you want to include in the BIOS scan. By default all the IDs are set to "yes" so they will be scanned at boot, you can set all of them to "no" except for #3 (your CD-ROM drive) and #7 (usually this is the adapter itself).

Reply 2 of 12, by Chadti99

Posted on 2022-12-29, 03:06

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Makes sense! I can’t for the life of me find a way to select what’s included in the scan. I’ll do some research.

Reply 3 of 12, by auron

Posted on 2022-12-29, 03:12

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how about putting the optical drive at #0? should be just no jumper on the id# pins.

Reply 4 of 12, by Sphere478

Posted on 2022-12-29, 04:11

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Indeed, set it to zero

Scanning di0……….. nothing

Scanning id1………… nothing

Scanning id2……….. nothing

Scanning id3………… cd!

Scanning id4……. Nothing

Gives up, boots? Idk…

scanning id0….. cd

Rest disabled, booting!

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Reply 5 of 12, by Chadti99

Posted on 2022-12-29, 16:14

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Thanks, changing the SCSI ID to 0 did the trick.

You guys will get a kick out of this, I don’t think this mobo supports booting from CD, even if it’s SCSI.

https://youtu.be/NoeM84TddzE

Reply 6 of 12, by Sphere478

Posted on 2022-12-29, 17:22

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Bad cd? Dirty laser lens?

What mobo is this?

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Reply 7 of 12, by weedeewee

Posted on 2022-12-29, 18:04

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FYI, the scsi bios must support booting from cdrom, not the mainboard.

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Reply 8 of 12, by TheMobRules

Posted on 2022-12-29, 18:25

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This post claims that it is possible to boot from CD-ROM if you update the BIOS to v2.11. Normally you can't access the optical drive in DOS without loading the ASPI CD driver, but looks like this BIOS versions does allow booting?

Reply 9 of 12, by rasz_pl

Posted on 2022-12-29, 18:44

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its booting from CD just fine right into boot menu, but there is already garbage on Windows 98 boot screen.

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Reply 10 of 12, by Chadti99

Posted on 2022-12-30, 01:56

Chadti99 Offline

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rasz_pl wrote on 2022-12-29, 18:44:

its booting from CD just fine right into boot menu, but there is already garbage on Windows 98 boot screen.

Yep I think you are right, although I’ve not been able to guess the correct menu options to get it to fully boot the CD. I wonder what’s causing the screen corruption and beeping?

This is on a Biostar 8433uud.

Reply 11 of 12, by Chadti99

Posted on 2022-12-30, 02:06

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I got it, just had to press the #2 at the right time and made it to this screen. Very cool.

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Reply 12 of 12, by Chadti99

Posted on 2023-01-08, 17:40

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So update on this, there must of been a resource conflict to cause the trashed video output on CD boot. Tried it again today and it works perfect on the Biostar 8433UUd.

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