03-18-2004
cannot find boot device and won't boot off cdrom
I'm running solaris 2.5.1. My main development server is DEAD, i can't even boot off the cdrom, it powers up, acts like it is starting the boot process but then says cannot find boot device. I've done the search here on this site and saw the other posts, but at the ok prompt it won't even let me boot off the cdrom. at OK i've tried boot -r , boot cdrom -s, boot cdrom, boot -a. It will not do anything with boot command. I've also tried the probe-scsi-all command it sometimes errors, sometimes shows my 4 scsi devices, but the Target 0 is blank or doesn't show up at all (i've tried probe-scsi-all 10+ times and get a different answer everytime). One of the boot messages I get at boot cdrom -s:
can't read disk label
can't read disk label package
cannot open /sbus@1f,0/SUNW,fas@e8800000/sd@6,0:f file and args: -s
panic - boot: could not mount filesystem
ANY IDEAS? i do have a spare system that I could open up and take out the main hard drive and swap. My data is safe, and I have backups, but getting the system running asap is a priority. it's our main development box for the programmers. any help much appreciated.
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LEARN ABOUT FREEBSD
boot.config
BOOT.CONFIG(5) BSD File Formats Manual BOOT.CONFIG(5)
NAME
boot.config -- Configuration file for the boot blocks
DESCRIPTION
The boot.config file contains options for the FreeBSD boot block code.
When the FreeBSD boot loader runs, it searches the ``a'' slice of the boot partition for a boot.config file (as a result, slices which are
missing an ``a'' partition require user intervention during the boot process). If the boot.config file is found, its contents are used as
the default configuration options for the boot block code and are echoed to the system console.
A valid format of this file is to put BIOS drive number, a controller type, a unit number, a partition, a kernel file name, and any other
valid boot(8) option on a single line, as it is done at the ``boot:'' prompt.
The options related to the boot image selection described below and all the other options available for boot.config are documented in detail
in the boot(8) manual page.
FILES
/boot.config parameters for the boot blocks (optional)
EXAMPLES
The command:
# echo "-P" > /boot.config
will activate the serial console of FreeBSD.
The command:
# echo "1:ad(1,a)/boot/loader" > /boot.config
will instruct the second stage of boot(8) on the first disk to boot with the third boot(8) stage from the second disk.
The command:
# echo "1:ad(1,a)/boot/loader -P" > /boot.config
will do both of the above.
SEE ALSO
boot(8), loader(8)
AUTHORS
This manual page was written by Daniel Gerzo <danger@FreeBSD.org>.
BSD
May 13, 2007 BSD