HP Apollo 9000 400t Wartungshandbuch PDF herunterladen (Seite 57)

ISL Environment

The ISL environment provides the means to load the operating system (HP–UX)

environment. The ISL environment also provides an offline platform to execute

diagnostic and utility programs from a boot device when HP–UX does not load.

The ISL program is the firstprogram loaded into main memory from an external

media (L~~ disk. or tape) and launched by the initialprogram loader

(IPL) routine during the Boot Administration environment.

The ISL environment provides the following capabilities:

. Execute user– entered commands to modify boot device paths and boot

options in stable storage.

. Run off–line diagnostic programs (MULTIDIAG, IOMAP).

. Provide automatic booting of the HP– UX 0/S after power—on or reset.

The ISL program provides a standalone environment for loading offline diagnostic

and utilityprograms from the LIF directory. The ISL program also provides user

commands to configure the boot parameters into Stable Storage.

ISL User Commands

There are several commands available in the ISL environment that allow a user to

obtain information about the boot characteristicsof the systemor to modify these

characteristics.

● display – displays the boot and console paths in Stable Storage and to

determine the current setting of the ISL Boot Flags.

● PrimPath _

modifies the primary boot path entryin Stable Storage. The

entry in Stable Storage for the primaryboot device begins at byte address

Oand ends at byte address51.

● altpath –

modifies the alternate boot path entryin Stable Storage. The

entryfor the alternate boot device begins atbyte address 128 and ends at

159.

● conspath –

modifies the console path entryin Stable Storage. The entry

in Stable Storage for the console device begins atbyte address 96 and

ends at byte address 127. The entryfor the keyboard and mouse devices

begins at byte address 160 and ends at 191.

● listautofl or lsautofl

– liststhe contents of the (HP–UX) autoboot file.

. support – boots the Support Tape from the boot device.

● readss

– displays 4 bytes (one word) from Stable Storage. The readss

command requires a decimal number between Oand 255 to address four

bytes in Stable Storage.

Troubleshooting 4-17

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HP Apollo 9000 400t Wartungshandbuch Seite 57