Delete the SGOS image from ProxySG

You can delete the SGOS image/installed-system from ProxySG via the command line interface (CLI). Here is an example of how to delete a version of SGOS that is currently installed on your system. Please note that it is not necessary to delete an image before performing an upgrade or installing a new version of SGOS.
SGOS>en
Enable Password:
SGOS#config t
Enter configuration commands, one per line. End with CTRL-Z.
SGOS#(config)installed-systems
SGOS#(config installed-systems)view
ProxySG Appliance Systems
1. Version: SGOS 5.4.2.2, Release ID: 41580
Friday August 7 2009 03:29:40 UTC,
Attributes: Locked, FIPS capable
Boot Status: Last boot succeeded, Last Successful Boot: Monday September 7 2
009 12:52:52 UTC
2. Version: SGOS 5.4.1.12, Release ID: 40038
Wednesday June 17 2009 02:35:14 UTC,
Attributes: FIPS capable
Boot Status: Last boot succeeded, Last Successful Boot: Wednesday August 26
2009 23:58:22 UTC
3. Version: SGOS 5.3.3.1, Release ID: 39156
Thursday April 30 2009 00:30:57 UTC,
Attributes: FIPS capable
Boot Status: Last boot succeeded, Last Successful Boot: Thursday August 27 2
009 16:45:48 UTC
4. Version: SGOS 4.2.8.6, Release ID: 35252
Wednesday July 16 2008 22:53:55 UTC,
Attributes: None
Boot Status: Last boot succeeded, Last Successful Boot: Wednesday August 26
2009 22:46:06 UTC
5. Version: SGOS 4.2.7.1, Release ID: 32941
Thursday February 28 2008 22:26:10 UTC,
Attributes: None
Boot Status: Last boot succeeded, Last Successful Boot: Wednesday September
2 2009 14:41:31 UTC
Default system to run on next hardware restart: 1
System to replace next: 5
Current running system: 1
Enforce signed: Disabled
SGOS#(config installed-systems)delete 5
Are you sure you want to delete system 5? (y or n)y

ok
SGOS#(config installed-systems)view
ProxySG Appliance Systems
1. Version: SGOS 5.4.2.2, Release ID: 41580
Friday August 7 2009 03:29:40 UTC,
Attributes: Locked, FIPS capable
Boot Status: Last boot succeeded, Last Successful Boot: Monday September 7 2
009 12:52:52 UTC
2. Version: SGOS 5.4.1.12, Release ID: 40038
Wednesday June 17 2009 02:35:14 UTC,
Attributes: FIPS capable
Boot Status: Last boot succeeded, Last Successful Boot: Wednesday August 26
2009 23:58:22 UTC
3. Version: SGOS 5.3.3.1, Release ID: 39156
Thursday April 30 2009 00:30:57 UTC,
Attributes: FIPS capable
Boot Status: Last boot succeeded, Last Successful Boot: Thursday August 27 2
009 16:45:48 UTC
4. Version: SGOS 4.2.8.6, Release ID: 35252
Wednesday July 16 2008 22:53:55 UTC,
Attributes: None
Boot Status: Last boot succeeded, Last Successful Boot: Wednesday August 26
2009 22:46:06 UTC
5. Version: N/A, Release ID: N/A ( EMPTY )
No Timestamp,
Attributes: None
Boot Status: Unknown, Last Successful Boot: Unknown
Default system to run on next hardware restart: 1
System to replace next: 5
Current running system: 1
Enforce signed: Disabled
SGOS#(config installed-systems)