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From: Robert Eckardt <roberte@MEP.Ruhr-Uni-Bochum.de>
Message-Id: <199710172308.BAA01009@ghost.mep.ruhr-uni-bochum.de>
Subject: Re: Kernel Configuration Question.
In-Reply-To: <01bcdb32$245db520$aa6ebace@stephane.cybersurf.net> from Stephane Raimbault at "Oct 17, 97 01:23:26 pm"
To: stephane@cybersurf.net (Stephane Raimbault)
Date: Sat, 18 Oct 1997 01:08:23 +0200 (MESZ)
Cc: questions@FreeBSD.ORG
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It was Stephane Raimbault who wrote:
> I have been creating myself a Kernel for my syste and I can not find
   what the following lines are for.  They are not mentioned in the
   HandBook.  Could someone tell me what some of these are for.  I have
   a good idea what are some of these but I am trying to determine if
   I need them or not.

> options         FAILSAFE                #Be conservative
If you have an NCR53C810 controller and a scsi hard disk which
claims to support tagged commands, but doesn't (e.g. HP C3725S)
or if you have a CDROM that doesn't support synchronous transfers
(e.g. NEC CD-ROM DRIVE:501), you'll need it.
You can grep through the kernel sources, in case I forgot s.th.

> options         USERCONFIG              #boot -c editor
If you want to be able to use the `-c' option at the boot prompt
to edit your hardware config on a command-line basis.
(Enabling/disabling of devices, changing ports etc.)

> options         VISUAL_USERCONFIG       #visual boot -c editor
If you like the menu driven configuration utility.

> controller      eisa0
If you have an EISA bus system.
Not needed on PCI/ISA systems.

> options         KTRACE          #kernel tracing
As the comment in LINT says:
KTRACE enables the system-call tracing facility ktrace(2).
It doesn't hurt.

> Thank you for your time,
> Stephane Raimbault

You're welcome,
Robert

-- 
Robert Eckardt                \\ FreeBSD -- solutions for a large universe.(tm)
RobertE@MEP.Ruhr-Uni-Bochum.de \\       What do you want to boot tomorrow ?(tm)
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