HP-UX HB v13.00 Ch-02 - System Boot

HP-UX Handbook – Rev 13.00 Page 6 (of 14)
Chapter 02 System Boot
October 29, 2013
AUTO -12289 1752 1 0 01/05/31 06:54:10
The values represent 256 Byte units, so the ISL starts e.g. at offset 146K. All LVM boot disks
(created with pvcreate –B) reserve space between their PVRA and VGRA to hold a BDRA and
the LIF files. Their LVM header size is always 2912K. In addition to the files above there may
be additional files, e.g. for the Offline Diagnostics. A PAD file may be used to fill (pad)
unneeded space with zeros.
Refer to the LVM Chapter, Chapter-13, to get an explanation of the terms above.
Now the initial program loader (IPL) loads the ISL into memory from the boot device and
executes it. It passes a flag to it that indicates whether to run interactively or to autoboot. If the
ISL is interactive then it gives the ISL> prompt and waits for user input before proceeding:
Main Menu: Enter command or menu > bo
Interact with IPL (Y, N, or Cancel)?> y
Booting...
Boot IO Dependent Code (IODC) revision 1
HARD Booted.
ISL Revision A.00.43 Apr 12, 2000
ISL> help
HELP Help Facility
LS List ISL utilities
AUTOBOOT Set or clear autoboot flag in stable storage
AUTOSEARCH Set or clear autosearch flag in stable storage
PRIMPATH Modify primary boot path in stable storage
ALTPATH Modify alternate boot path in stable storage
CONSPATH Modify system console path in stable storage
DISPLAY Display boot and console paths in stable storage
LSAUTOFL List contents of autoboot file
FASTSIZE Sets or displays FASTSIZE
800SUPPORT Boots the s800 Support Kernel from the boot device
700SUPPORT Boot the s700 Support Kernel from the boot device
READNVM Displays contents of one word of NVM
READSS Displays contents of one word of stable storage
LSBATCH List contents of batch file
BATCH Execute commands in batch file
LSEST List contents of EST (Extended Self Test) file
EST Execute commands in EST (Extended Self Test) file
Enter 'LS' to see a list of the ISL utilities.
ISL>
NOTE:
There is no ISL for V-Class Systems. It is part of PDC and called open boot prompt (OBP).
If the ISL is not interactive then it looks for the AUTO file on the LIF volume of the boot device
to determine what to run next.