Configuring into Your System a Partitioned Disk Already Containing Data

Before you move a disk from one system to another, you must create a clear record of how the disk is set up on its original system. Make a record of the following output:

Back up the data on the disk; see the backup chapter in Managing Systems and Workgroups.

Create a record of your system's current disk configuration for later comparison:

/usr/sbin/ioscan -fun -C disk

Note whether the current configuration includes the device driver(s) needed to communicate with the disk you intend to configure. Consult the tables in “Selecting Device Drivers for a Disk Device and Interface” for guidelines on compatible disks, device drivers, and interfaces. If any necessary device driver is absent from the kernel, you will need to rebuild the kernel to include it. Here is how you rebuild the kernel:

1. Change directory to the build environment (/stand/build). There, execute a system preparation script, system_prep. system_prep writes a system file based on your current kernel in the current directory. (That is, it creates /stand/build/system.) The -v provides verbose explanation as the script executes.

   cd /stand/build /usr/lbin/sysadm/system_prep -v -s system

2. Modify the /stand/build/system file to add the absent driver(s) by invoking the kmsystem command. The -c Y specifies that driver-name is to be configured into the system.

   /usr/sbin/kmsystem -S /stand/build/system -c Y driver-name

   	NOTE: To avoid introducing format errors, do not edit the HP-UX system description files directly. Instead, use the commands kmsystem and kmtune. These commands are new for Release 11.0; consult kmsystem(1M) and kmtune(1M) in the HP-UX Reference.

3. Build the new kernel by invoking the mk_kernel command. This creates /stand/build/vmunix_test, a kernel ready for testing.

   /usr/sbin/mk_kernel -s /stand/build/system

4. Save the old system file by moving it. Then move the new system file into place.

   mv /stand/system /stand/system.prev mv /stand/build/system /stand/system

5. Prepare for rebooting by invoking the kmupdate command. This sets a flag that tells the system to use the new kernel when it restarts.

   /usr/sbin/kmupdate

Bring the system down and physically install the disk device.

Turn on the power to all peripheral devices. Wait for them to become "ready", then turn on power to the SPU.

On booting up, HP-UX detects the new disk and associates it with its device driver. insf creates a single character device special file and a single block device special file to communicate with the entire disk.

Execute /usr/sbin/ioscan -fun -C disk again, to verify that the disk device configured successfully and to identify its whole-disk device special files (/dev/[r]dsk/c#t#d#).

Use the mksf command to create device special files for each individual section being used on the disk. (Refer to the printout of /etc/checklist to identify the sections.)

Note, as of HP-UX 10.0, sections 2 and 0 have been switched: s0 now specifies whole disk; s2 specifies the portion of the disk that was previously represented by s0. Also, since sections are only minimally supported at 10.0, consult earlier documentation or version of /etc/disktab for disk sectioning geometry.

For example,

/sbin/mksf -C disk [ -H hardware_path -I instance ] -s   section_number
/sbin/mksf -C disk [ -H hardware_path -I instance ] -r -s section_number

Execute /usr/sbin/ioscan -fun -H hardware_path to verify that the device special files were created successfully.