Not the first person with this problem. Seems SILO limits uncompressed kernels to less than 3 M. I am using the stock 2.4 kernel, though, so there must be a workaround. Can anyone point me in the direction of documentation or just tell me the trick? Thanks, Rob Sherwood PS. I am successfully using 2.2.20-sun4u-smp. It boots fine, and is ~3.2M uncompressed, so I'm confused...