Boot Checkout Information; Unix Single-User Mode - Silicon Graphics IRIS Workstation User Manual

System Administration
Since the IRIS Workstation can be booted from different environments (hard
disks, tape drives, etc.) it may be useful to find the names of the files on a tape
or disk before booting the IRIS Workstation. This information can be found
with the PROM Monitor. For example,
iris> d *
bin
defaultboot
dev
iris>
searches the root file system and lists its contents. After locating a file, it can be
booted explicitly with the d command. For example,
iris> d unix
...
See Table 6-1 for a list of the commands available through the PROM Monitor.

6.2 Boot Checkout Information

If the configuration switch (switch 3) is set to the
Checkout
IRIS Workstation will display additional information during system startup.
• Scan processor memory. An "X" is displayed for each half megabyte
of memory and a "." is displayed for each non-existent half megabyte
of memory.
• Clear processor memory.
• Map processor memory.
• Display configuration switch values.
This information is intended for diagnostic purposes only. Normally the
configuration switch should be set to the
Checkout

6.3 UNIX Single-User Mode

After the IRIS Workstation has been booted, it will display some system
information. See Figure 6-1 for an example. This includes information about the
software release, memory size, hardware configuration and the file system.
NOTE: UNIX single-user mode should be used only for
system maintenance. Normal operation should occur
only in multi-user mode.
Initially the IRIS Workstation is booted in UNIX single-user mode. The
following procedure starts multi-user mode and sets the date. The important
file for starting multi-user mode is /etc/rc. It contains commands for starting
daemons and mounting file systems. See brc(1).
Version 1.0
etc
lib
lost+found
IRIS WORKSTATION GUIDE
stand
tmp
unix
position.
Closed
unix1
usr
version
position, the
Open
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