I downloaded a boot CD image for my test machine, a SunBlade 100. It is an entry-level 64-bit UltraSPARC-IIe workstation -- a few years old, and begging for either an upgrade to Solaris 10 or an entirely new operating system. Not all architectures support booting from local media, but for those that do you can get started with just the boot image, and perform the rest of the installation over FTP.
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