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Full Discussion: reading the hard drive
Top Forums UNIX for Advanced & Expert Users reading the hard drive Post 33956 by RTM on Monday 27th of January 2003 04:00:48 PM
Old 01-27-2003
When you edited the /etc directory, did you save it as a file?


Try booting single user from cdrom. Mount up the / partion of the disk on /mnt. You then need to cd /mnt/lost+found. See it the system moved the directory there. If it did, move it back to /mnt/etc. Then run fsck on that disk. Shutdown and boot into single user off the disk.

(I was just looking at your post again - is this a X86 system? If yes, then I don't know if my post will help you - I don't believe you can boot single user from the Solaris X86 cd.)

(Another note - you can boot from cdrom for X86)
Booting Single-User From CDROM Using the Device Configuration Assistant (DCA) on the Hard Drive:
------------------------------------------------------------------------------------------------


1). Power the system on.

2). Insert the correct version Solaris Software cdrom for your system.

OPTIONAL: If there is a boot loader in operation on your system, select the Solaris partition as the partition to boot from.

3). After the "Solaris Secondary Boot Loader" and "Running Device Configuration Assistant" messages appear, hit the 'esc' key where prompted to do so.

4). At the "DCA intro screen" hit F2 (F2_Continue).

5). At the "list of devices found" hit F2 (F2_Continue).

6). At the "list of available boot devices" select the CDROM as the device from which to boot a Solaris kernel.

7). At the screen where you are prompted to select 1, 2, or 3 for what type of install you wish to do, enter 'b -s' instead of a number.

This will bring the system up to single-user mode from the cdrom.


Booting Single-User From the CDROM Using the Device Configuration Assistant (DCA) Floppy:
-----------------------------------------------------------------------------------------

1). With the power on, insert DCA floppy, then the correct version Solaris Software cdrom for your system.

2). At the "DCA intro screen" hit F2 (F2_Continue).

3). At the "list of devices found" hit F2 (F2_Continue).

4). At the "list of available boot devices" select the CDROM as the device from which to boot a Solaris kernel.

5). At the screen where you are prompted to select 1, 2, or 3 for what type of install you wish to do enter 'b -s' instead of a number.

This will bring the system up to single-user mode from the cdrom. It should be noted that even though there are fewer steps, this normally takes much longer than running the DCA from the hard drive.


Booting Single-User From the Hard drive:
----------------------------------------

1). Power the system on.

OPTIONAL: If there is a boot loader in operation on your system, select the Solaris partition as the partition to boot from.

2). Wait until the prompt for booting "with options" or "into the interpreter". At this point enter 'b -s' and hit [Return].

This will bring the system up to single-user mode from the hard drive.


Booting Single-User From the Hard Drive Using the DCA Floppy:
-------------------------------------------------------------

1). With the power on, insert DCA floppy,

2). At the DCA intro screen hit F2 (F2_Continue).

3). At the "list of devices found" hit F2 (F2_Continue).

4). At the "list of available boot devices" select the hard drive with the root partiton on it as the device from which to boot a Solaris kernel.

5). Wait until the prompt for "booting with options" (b) or "into the interpreter" (i). At this point enter 'b -s' and hit [Return].
Note that you only have 5 seconds to do this.

This will bring the system up to single-user mode from the hard drive.

Last edited by RTM; 01-27-2003 at 05:24 PM..
 

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IDA(4)							   BSD Kernel Interfaces Manual 						    IDA(4)

NAME
ida -- Compaq Intelligent Drive Array Controllers SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file: device scbus device ida Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): ida_load="YES" DESCRIPTION
The Compaq Intelligent Drive Array (IDA) technology is used to distribute data across an array of hard drives. It unites these hard drives into one or more high-performance logical drives. The drive array is managed by an array controller. These controllers have the ability to provide fault tolerance for the connected drives and optionally provide write cache for the logical drives. It is also possible for an application to access the SCSI bus subsystem directly by using the pass-through interface. HARDWARE
The following controllers are supported by the ida driver: o Compaq SMART Array 221 o Compaq Integrated SMART Array Controller o Compaq SMART Array 4200 o Compaq SMART Array 4250ES o Compaq SMART 3200 Controller o Compaq SMART 3100ES Controller o Compaq SMART-2/DH Controller o Compaq SMART-2/SL Controller o Compaq SMART-2/P Controller o Compaq SMART-2/E Controller o Compaq SMART Controller IMPLEMENTATION NOTES
Extreme caution should be exercised when using the pass-through interface. It is possible to interfere with normal system I/O and cause hangs if pass-through is used to an active device. Pass-through should only be used to a device that is otherwise quiescent. SEE ALSO
cam(4), pass(4), xpt(4), camcontrol(8) AUTHORS
The ida driver was written by Jonathan Lemon <jlemon@FreeBSD.org> and Matthew N. Dodd <mdodd@FreeBSD.org>. This manual page was written by Tom Rhodes <trhodes@FreeBSD.org>. BSD
August 8, 2004 BSD
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