http://www.macbsd.com/macbsd/LC040-and-BSD.htmlIt seems that work is underway to get NetBSD-m68k to work on LC040 Macs, but currently it doesn't (one can only boot into single-user mode). Ditto for OpenBSD, according to the OpenBSD web site.
Both Open and Net will likely be due for kernel updates in the next few months, so maybe things will change then.
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Permanent 68k roommates:
Q605 full '040 36/1.2G/enet/7.6.1-NetBSD dual-boot
SE/30 FPU 20/500/enet/A/UX