Quick Reference Guide

52 | Getting Started
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The Boot Menu is also revised in SFTOS v. 2.5.1 to allow the user to select either image from the boot
menu (or also to download a replacement image). This choice is available in two cases:
• If the user interrupts the boot sequence
• If the boot sequence fails to launch either saved software image. This can happen if the images become
corrupted (if the CRC check fails on the image).
When you are first installing SFTOS 2.5.1, you use the standard
copy (see Downloading a Software Image
on page 45), configuration backup (see Saving the Running Configuration on page 49), and
reload
commands (see Figure 3-25) that are common to all previous SFTOS versions. Note that the installation of
v. 2.5.1 incurs a pause of several minutes while the switch reformats its flash to accommodate the Dual
Image Management feature.