Attempting to boot the following images on an HP xw4600 workstation fails; the system does not recognize the boot media: FreeBSD-11.0-RELEASE-amd64-mini-memstick.img FreeBSD-11.0-RELEASE-amd64-memstick.img I believe this issue could be related to the new install images that now have combined BIOS and UEFI functionality. I suggest this because I am able to boot a 10.3 BIOS image without a problem (FreeBSD-10.3-RELEASE-amd64-memstick.img). I am also able to boot many Linux installer images using the same hardware. I have verified the checksums and attempted writing the images several times to known good USB drives. The system contains an Intel Core 2 Duo E8300 @ 2.83 GHz, 4096 MB RAM. Sorry for the limited information, but this is the most I can provide without further guidance. I am happy to provide more information upon request. Thank you!
A related bug at: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215143 Maybe you can try to build your own install media like I did (outlined the steps in the report) and see if it boots for you. I installed FBSD 11 in Virtualbox and used that as the build system. It took something like 8 hours an a 4 core Xeon.
If you can, please grab the test image from https://people.freebsd.org/~emaste/mini-image-2018-05-28-amd64.xz uncompressing it and writing it to a USB stick, and try booting that on this hardware. (The test image is not a full installer; it should just boot up to a login prompt.)
^Triage: close as OBE. I'm sorry that this PR did not get addressed in a timely fashion. Please let us know if this still occurs on a supported OSVERSION.