Does not boot to safe mode.
On a lot of BIOS, you have to manually set the BIOS to look for bootable ROMs from addon cards like Ethernet and SCSI cards (or SATA). Check in your BIOS, and tinker with that setting if you have one. If you are not booting off the SCSI card, you can disable this setting. If that's the current setting, try enabling it and let it enumerate the SCSI ROM at POST.