bootable CDs on FreeBSD-6.1-R amd64

Roland Smith rsmith at xs4all.nl
Wed Sep 5 09:09:23 PDT 2007


On Tue, Sep 04, 2007 at 08:50:21PM -0300, luizbcampos at gmail.com wrote:
>        Dear Sirs
> 
> 
>        Burning CDs is becoming a coastier task to me on FBSD-6.1-R amd64.
> I've lost five of them...and the question is how to make bootable CDs by
> using cdrecord? I've already read "man cdrecord" but the question is not
> clearer.

Better not use 6.1. 6.2 has been out for some time now.

The following works for me;

1) Make sure that the CD/DVD rewriter is controlled as a SCSI device
instead of an ATAPI device. Build a kernel with the following devices:

# ATA and ATAPI devices
# Do _not_ include the atapicd driver!
device          ata
device          atadisk         # ATA disk srives
device          ataraid         # RAID drives
# The atapicam device is not included in the GENERIC amd64 kernel!
device          atapicam        # Emulate ATAPI devices as SCSI via CAM
options         ATA_STATIC_ID   # Static device numbering

# SCSI peripherals
device          scbus           # SCSI bus (required for SCSI)
device          cd              # Compact Disc
device          da              # Direct Access (disks)
device          pass            # Passthrough device (direct SCSI access)

2) Set the device permissions correctly

# Give members of group cdrom access to the CD/DVD-ROM and DVD+RW via the
# SCSI interface
own     xpt0    root:cdrom
perm    xpt0    0660
own     cd0     root:cdrom
perm    cd0     0660
own     cd1     root:cdrom
perm    cd1     0660
link    cd1     cdrom
link    cd1     dvd

My user-id is part of the cdrom group.

3) Use 'cdrecord -scanbus' to determine which device to use;
Cdrecord-ProDVD-Clone 2.01.01a11 (amd64-unknown-freebsd6.2) Copyright (C) 1995-2006 Jörg Schilling
Using libscg version 'schily-0.8'.
scsibus1:
	1,0,0	100) 'HL-DT-ST' 'DVD-ROM GDR8163B' '0L23' Removable CD-ROM
	1,1,0	101) 'PLEXTOR ' 'DVDR   PX-716A  ' '1.08' Removable CD-ROM

So I'm using 1,1,0.

4) Burn the image;

cdrecord -v -eject -dao speed=32 driveropts=burnfree dev=1,1,0 -pad \
-data 6.2-RELEASE-amd64-disc1.iso 

HTH,

Roland
-- 
R.F.Smith                                   http://www.xs4all.nl/~rsmith/
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