Note that HP's are usually set up to autoboot from p0. This is usually an internal hard drive at the highest scsi id (in this example, the highest scsi id on the first internal scsi chain is scsi id 2, 0/0/1/1.2). P1 is the alternate boot path which may be set to the CD or tape drive, or perhaps a bootable mirror. If we had a bootable mirror set up, you would use bo p(put the number here), and you should know from documentation what path number the mirror was located at.
If you were trying to guess which path was bootable and used a non-bootable path, it would look like this.
Main Menu: Enter command or menu > bo p5
Interact with IPL (Y, N, or Cancel)?> n
Booting...
Boot Device not ready.
Retrying Boot Device...
Boot Device not ready.
Retrying Boot Device...
Boot Device not ready.
Retrying Boot Device...
Boot Device not ready.
Retrying Boot Device...
Boot Device not ready.
Retrying Boot Device...
Boot Device not ready.
Retrying Boot Device...
Boot Device not ready.
Retrying Boot Device...
Boot Device not ready.
Retrying Boot Device...
Boot Device not ready.
Retrying Boot Device...
Boot Device not ready.
Retrying Boot Device...
Failed to initialize.
ENTRY_INIT
Status = -8
00000000 FFFFFFF8 00000000 00000002 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 454E4841 00000000 00000001 00000000 00000000 00000000 454E4842
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000002 00000000 00000002 00000000 0000003A 00000000 00000000
Failed to initialize.
---- Main Menu ---------------------------------------------------------------
Command Description
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BOot [PRI|ALT| path ] Boot from specified path
PAth [PRI|ALT] [ path ] Display or modify a path
SEArch [DIsplay|IPL] [ path ] Search for boot devices
COnfiguration menu Displays or sets boot values
INformation menu Displays hardware information
SERvice menu Displays service commands
DIsplay Redisplay the current menu
HElp [ menu | command ] Display help for menu or command
RESET Restart the system
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Main Menu: Enter command or menu >