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Debugger General Information
B
!
Caution
B-4
exhausted. If a valid bootable device is found, a boot from that
device begins. The controller scanning sequence goes from the
lowest controller Logical Unit Number (LUN) detected to the
highest LUN detected.
At power-up, Autoboot is enabled, and providing the drive and
controller numbers encountered are valid, the following message
displays on the system console:
"Autoboot in progress... To abort hit <BREAK>"
Following this message there is a delay to allow you an opportunity
to abort the Autoboot process if you wish. Then the actual I/O
begins: the program pointed to within the volume ID of the media
specified loads into RAM and control passes to it. If, however,
during this time you want to gain control without Autoboot, you
can press the:
BREAK key
Software ABORT switch
RESET switch
Autoboot is controlled by parameters contained in the ENV
command. These parameters allow:
Selection of specific boot devices
Selection of files
Programming of the Boot delay
Refer to the ENV command in the Commands Table for more
details.
Although streaming tape can be used to autoboot, the
same power supply must be connected to the:
Streaming tape drive
Controller
MVME177
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