I've got an HP DL-360 1U here that has a slim SATA CDROM. I've (so far) tried booting FreeBSD-7.0-RELEASE and FreeBSD-7.1-BETA2. I've tried both rewritable media (my first choice) and write-once media. The kernel loads fine, but multiuser fails with "acd0: TIMEOUT - READ_BIG retrying" ... twice, followed by "timed out".