HP Visualize J5000 hp Visualize J5000, J7000 workstations service handbook (a4 - Page 56

Dealing with a Boot Failure

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Dealing with a Boot Failure To start this workstation from an operating system stored on a device different from the usual boot device, to boot from a different disk, or to boot from another type of device (such as a DDS tape drive), see the following situations and examples that use the Boot Console Interface. To access the Boot Console Interface, see Chapter 9 of this book. D To boot from a known device containing a bootable operating system, type the following at the prompt: Main Menu: Enter a command or a menu > boot where device is the hardware path to the device, specified in Mnemonic Style Notation. For example, to boot an operating system stored on a DDS-format tape in a drive located at ''scsi.1.0,'' go to the Main Menu of the Boot Console Interface and then type the following command at the prompt: Main Menu: Enter a command or a menu > boot scsi.1.0 The operating system on the specified device is used to start the workstation. D To interact with the Initial System Loader (ISL) before booting the workstation, type the following at the prompt: Main Menu: Enter a command or a menu > boot You are prompted: Interact with ISL (Y or N) > y Answering yes (y) causes the ISL to be loaded from the specified device. After a short time, the following prompt appears on the screen: ISL> ISL is the program that actually controls the loading of the operating system. By interacting with ISL, you can choose to load an alternate version of the HP-UX operating system. For example, if the usual kernel (/hp-ux for 9.05, and /stand/vmunix for 10.0) on the root disk (fwscsi.6.0) has become corrupted, boot the workstation from the backup kernel (/SYSBCKUP for 9.05, and /stand/vmunix.prev for 10.0) by typing the following at the ISL> prompt: ISL> hpux /SYSBCKUP (for 9.05) ISL> hpux /stand/vmunix.prev (for 10.0) 4-6 Troubleshooting

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4–6
Troubleshooting
Dealing with a Boot Failure
To start this workstation from an operating system stored on a device different from
the usual boot device, to boot from a different disk, or to boot from another type of
device (such as a DDS tape drive), see the following situations and examples that use
the Boot Console Interface. To access the Boot Console Interface, see Chapter 9 of
this book.
D
To boot from a known device containing a bootable operating system, type the
following at the prompt:
Main Menu: Enter a command or a menu >
boot
<device>
where
device
is the
hardware path
to the device, specified in Mnemonic Style
Notation.
For example, to boot an operating system stored on a DDS-format tape in a
drive located at ‘‘scsi.1.0,’’ go to the Main Menu of the Boot Console Interface
and then type the following command at the prompt:
Main Menu: Enter a command or a menu >
boot
scsi.1.0
The operating system on the specified device is used to start the workstation.
D
To interact with the
Initial System Loader
(
ISL
) before booting the worksta-
tion, type the following at the prompt:
Main Menu: Enter a command or a menu >
boot
<device>
You are prompted:
Interact with ISL (Y or N) >
y
Answering yes (
y
) causes the ISL to be loaded from the specified device. After
a short time, the following prompt appears on the screen:
ISL>
ISL is the program that actually controls the loading of the operating system.
By interacting with ISL, you can choose to load an alternate version of the
HP-UX operating system.
For example, if the usual kernel (
/hp-ux
for 9.05, and
/stand/vmunix
for 10.0)
on the root disk (
fwscsi.6.0
) has become corrupted, boot the workstation from
the backup kernel
(/SYSBCKUP
for 9.05, and
/stand/vmunix.prev
for 10.0
)
by typing the following at the
ISL>
prompt:
ISL>
hpux /SYSBCKUP
(for 9.05)
ISL>
hpux /stand/vmunix.prev
(for 10.0)