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Date:      Sat, 3 Jul 1999 14:56:41 +0200 (CEST)
From:      wilko@freebsd.org
To:        FreeBSD-gnats-submit@freebsd.org
Subject:   kern/12495: cdrom drive detection failure during install
Message-ID:  <199907031256.OAA07636@dontpanic.tcja.nl>

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>Number:         12495
>Category:       kern
>Synopsis:       3.1 install fails to detect Toshiba CDROM on AHA1740 adapter
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Jul  3 06:00:01 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator:     Wilko Bulte
>Release:        FreeBSD 3.1-RELEASE
>Organization:
TCJA
>Environment:

	EISA machine with a single Adaptec 1740A adapter.
	Toshiba XM-5401B SCSI cdrom. FreeBSD 3.1-RELEASE CDROM. Boot from
	bootfloppy taken from 3.1-cdrom.

>Description:

	After poweron both the harddisk (SCSI ID #0) and the Toshiba CD
	(ID #4) are detected OK by the 1740A BIOS. The bootfloppy kernel
	initiates a bus reset and waits for 15 secs. During this time
	the LED of the CD blinks. The booted install kernel fails to detect
	the cdrom drive though.

	An attempt with a FreeBSD 2.2.6-RELEASE bootfloppy detects the
	cdrom drive just fine. 2.2.6 install runs fine.

	Guessing: it looks like 15 secs delay is too short for this CDROM
	type. See also kern/5181 for a similar Toshiba problem.

>How-To-Repeat:

	See above

>Fix:
	
	Most likely increasing the 15 secs delay in the install floppy
	will help. Is there any way of changing the delay used by 
	the boot floppy? If not, I'm willing to test drive a floppy 
	with an increased delay (25 - 30 secs should do it I guess).
	Testdrive may take a couple of days as I'm remote from the machine.
	


>Release-Note:
>Audit-Trail:
>Unformatted:


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