Alcatel-Lucent 7950 XRS Series, Configuration Manual

Page: 174 / 502

System Initialization
Page 174 7950 SR OS Basic System Configuration Guide
System Initialization
The primary copy of SR OS software is located on a compact flash card. The removable media is
shipped with each 7950 XRS-Series router and contains a copy of the OS image.
Starting a 7950 XRS-Series router begins with hardware initialization (a reset or power cycle). By
default, the system searches Compact Flash Slot #3 (
cf3 ) for the
boot.ldr
file (also known as the
bootstrap file). The
boot.ldr
file is the image that reads and executes the system initialization
commands configured in the boot option file (BOF). The default value to initially search for the
boot.ldr
file on cf3 cannot be modified.
The following is an example of console display output when the
boot.ldr
file cannot be located
on cf3 .
...
(memory test messages)
(serial number information)
Searching for boot.ldr on local drives:
No disk in cf3
No disk in cf3
No disk in cf3
Error - file boot.ldr not found on any drive
Please insert CF containing boot.ldr. Rebooting in 5 seconds.
When the bootstrap image is loaded, the BOF is read to obtain the location of the image and
configuration files. The BOF must be located on the same compact flash drive as the
boot.ldr
file.
Figure 6 displays the system initialization sequence.