Siemens SIMATIC Rack PC 840 V2 Operating Instructions Manual page 140

Detailed descriptions
16.5 BIOS Setup
Figure 16-21 Boot menu (example)
This screen shows all possible boot devices. The device taking highest priority is listed in the
first line of the relevant group. Here again, you can change the order of appearance as
described above.
If a boot device is not available, the next device in the sequence is automatically checked to
ascertain whether or not it is bootable.
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Operating Instructions, Edition 05/2006, A5E00248055-04
SIMATIC Rack PC 840 V2