Examples: Installing an alternate disk

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Examples of alternate disk installation are shown.

To install an alternate disk, perform one of the following procedures:

To clone the rootvg running a lower technology level to hdisk1 and update that clone with the latest maintenance level that is on cd0, run the following command:
```
alt_disk_copy -b update_all -l /dev/cd0 -d hdisk1
```
In SMIT, use the smit alt_clone fast path and select hdisk1 from the listing for Target Disk(s) to install, select the update_all bundle from the listings in the Bundle to Install field, and /dev/cd0 from the listing in the Directory or Device with images field.
To clone the rootvg running 7.1.0 to hdisk3, then update to the latest fixes that are mounted from another system on /710fixes, and run a customized script named /tmp/finish_alt_install, run the following command:
```
alt_disk_copy -b update_all -l /710fixes \
-s /tmp/finish_alt_copy -d hdisk3
```
In SMIT, use the smit alt_clone fast path and select hdisk3 from the listing for Target Disk(s) to install, select the update_all bundle from the listings in the Bundle to Install field, type /710fixes in the Directory or Device with images field, and type /tmp/finish_alt_copy in the Customization script field.
To install an AIX® mksysb tape that was created from a machine with the same hardware configuration as the target, to hdisk1, run the following command:
```
alt_disk_mksysb -m /dev/rmt0 -d hdisk1
```
In SMIT, use the smit alt_mksysb fast path and select hdisk1 from the listing for Target Disk(s) to install field and select /dev/rmt0 from the listing for Device or image name field.
To install an AIX mksysb image that is NFS mounted on file system /mksysbs to the alternate disk hdisk2 using a customized image.data file and an exclude file containing ^./tmp/, type the following command:
```
alt_disk_mksysb -m /mksysbs/my_71_mksysb -i /mksysbs/my_71_image.data \
-e /mksysbs/my_exclude_file -d hdisk2
```
Using the ^./tmp/ pattern does not backup files in the /tmp directory, but does backup files in the /var/tmp directory.
Note: All files are backed up relative to the current directory. This directory is represented by a . (dot character). If it is important that the search match the string at the beginning of the line when excluding a file or directory, it is necessary to use a ^. (caret followed by a dot character) as the first part of the search string, followed by the filename or directory to be excluded. The form is as follows:
```
^./filename
```
If the file name or directory being excluded is a substring of another file name or directory, use a ^. (caret followed by a dot character) for the search to start at the beginning of the line and the $ (dollar symbol) to have the search finish at the end of the line.
In SMIT, use the smit alt_mksysb fast path and select hdisk2 in the Target Disk(s) to install field. Next, type /mksysbs/my_71_mksysb in the Device or image name field, /mksysbs/my_71_image.data in the image.data file field, and /mksysbs/my_exclude_file in the Exclude list field.
To "wake-up" an original rootvg, after booting from the new alternate disk, run the following command:
```
alt_rootvg_op -W -d hdisk0
```
The following example illustrates the output that might display when running the command discussed above:
```
# lspv
hdisk0         000040445043d9f3    old_rootvg
hdisk1         00076443210a72ea    rootvg

# alt_rootvg_op -W hdisk0

# lspv
hdisk0         000040445043d9f3    altinst_rootvg
hdisk1         00076443210a72ea    rootvg
```
At this point, the altinst_rootvg volume group is varied-on and the /alt_inst file systems are mounted.
To "put-to-sleep" a volume group that had experienced a "wake-up," type the following command:
```
alt_rootvg_op -S
```
The following example illustrates the output that might display when running the command previously discussed:
```
# lspv
hdisk0         000040445043d9f3    altinst_rootvg
hdisk1         00076443210a72ea    rootvg

# alt_rootvg_op -S

# lspv
hdisk0         000040445043d9f3    altinst_rootvg
hdisk1         00076443210a72ea    rootvg
```
The altinst_rootvg is no longer varied on and the /alt_inst file systems are no longer mounted. If necessary for the altinst_rootvg volume group name to be changed back to old_rootvg, do this task with the -v flag.