As now the only way to have FreeBSD running on Amazon is to have it running with the Windows AMIs.
Find FreeBSD instance
root@blackbox:~/ec2# ec2-describe-images -a | grep -i freebsd | grep -iv windows
IMAGE ami-0d08cc64 118940168514/FreeBSD/EC2 7.4b-RELEASE Cluster Compute 118940168514 available public x86_64 machine ebs hvm xen
IMAGE ami-d29b6abb 118940168514/FreeBSD/EC2 8.2-RC1 118940168514 available public i386 machine aki-407d9529
ebs paravirtual xen
IMAGE ami-4a15e423 118940168514/FreeBSD/EC2 8.2-RC1.5 118940168514 available public i386 machine aki-407d9529
ebs paravirtual xen
IMAGE ami-c003f3a9 118940168514/FreeBSD/EC2 8.2-RC3 118940168514 available public i386 machine aki-407d9529
ebs paravirtual xen
IMAGE ami-423bc82b 118940168514/FreeBSD/EC2 8.2-RELEASE 118940168514 available public i386 machine aki-407d9529
ebs paravirtual xen
IMAGE ami-646c9e0d 118940168514/FreeBSD/EC2 8.2a-RELEASE amd64/HVM 118940168514 available public x86_64 machine ebs hvm xen
IMAGE ami-290eca40 118940168514/FreeBSD/EC2 8.2b-RELEASE Cluster Compute 118940168514 available public x86_64 machine ebs hvm xen
IMAGE ami-b55f99dc 118940168514/FreeBSD/EC2 8.2b-RELEASE i386/XEN 118940168514 available public i386 machine aki-407d9529 ebs paravirtual xen
IMAGE ami-c01aeca9 118940168514/FreeBSD/EC2 9.0-CURRENT 2010-12-12 118940168514 available public i386 machine aki-407d9529 ebs paravirtual xen
IMAGE ami-a0fc0dc9 118940168514/FreeBSD/EC2 9.0-CURRENT 2010-12-29 118940168514 available public i386 machine aki-407d9529 ebs paravirtual xen
IMAGE ami-f4db2a9d 118940168514/FreeBSD/EC2 9.0-CURRENT 2011-01-01 118940168514 available public i386 machine aki-407d9529 ebs paravirtual xen
IMAGE ami-8cce3fe5 118940168514/FreeBSD/EC2 9.0-CURRENT 2011-01-04 118940168514 available public i386 machine aki-407d9529 ebs paravirtual xen
IMAGE ami-479f482e 118940168514/FreeBSD/EC2 9.0-RELEASE Cluster Compute 118940168514 available public x86_64 machine ebs hvm xen
IMAGE ami-7a41b713 844886073610/FreeBSD-9 Base 844886073610 available public i386 machine aki-407d9529 ebs paravirtual xen
IMAGE ami-c841b7a1 844886073610/FreeBSD-9 Python 844886073610 available public i386 machine aki-407d9529 ebs paravirtual xen
root@blackbox:~/ec2#
Start your FreeBSD instance
root@blackbox:~/ec2# ec2-run-instances ami-7a41b713 -k ${EC2_KEYPAIR} -t t1.micro
RESERVATION r-79e5d618 955701963229 default
INSTANCE i-cec7c0ac ami-7a41b713 pending ec2-keypair 0 t1.micro 2012-01-18T18:17:21+0000 us-east-1a aki-407d9529 monitoring-disabled ebs paravirtual xen sg-7ac33e12 default
root@blackbox:~/ec2#
Check the instance is running
root@blackbox:~/ec2# ec2-describe-instances i-cec7c0ac
RESERVATION r-79e5d618 955701963229 default
INSTANCE i-cec7c0ac ami-7a41b713 ec2-23-20-17-21.compute-1.amazonaws.com ip-10-244-135-190.ec2.internal running ec2-keypair0
t1.micro 2012-01-18T18:17:21+0000 us-east-1a aki-407d9529 monitoring-disabled 23.20.17.21 10.244.135.190 ebs paravirtual xen sg-7ac33e12 default
BLOCKDEVICE /dev/sda1 vol-094d7364 2012-01-18T18:18:05.000Z
BLOCKDEVICE /dev/sdb vol-0b4d7366 2012-01-18T18:18:05.000Z
root@blackbox:~/ec2#
0*$ zsh
Wait few minutes to get the instance fully loaded and ssh
root@blackbox:~/ec2# ssh -i ec2-keypair ec2-23-20-17-21.compute-1.amazonaws.com
If you are not able to login check what is going on in the console
root@blackbox:~/ec2# ec2-get-console-output i-cec7c0ac
i-cec7c0ac
2012-01-18T18:20:55+0000
Xen Minimal OS!
start_info: 0xa01000(VA)
nr_pages: 0x26700
shared_inf: 0xdf617000(MA)
pt_base: 0xa04000(VA)
nr_pt_frames: 0x9
mfn_list: 0x967000(VA)
mod_start: 0x0(VA)
mod_len: 0
flags: 0x0
cmd_line: root=/dev/sda1 ro 4
stack: 0x946780-0x966780
MM: Init
_text: 0x0(VA)
_etext: 0x621f5(VA)
_erodata: 0x76000(VA)
_edata: 0x7b6d4(VA)
stack start: 0x946780(VA)
_end: 0x966d34(VA)
start_pfn: a10
max_pfn: 26700
Mapping memory range 0xc00000 - 0x26700000
setting 0x0-0x76000 readonly
skipped 0x1000
MM: Initialise page allocator for b3e000(b3e000)-0(26700000)
MM: done
Demand map pfns at 26701000-36701000.
Heap resides at 36702000-76702000.
Initialising timer interface
Initialising console ... done.
gnttab_table mapped at 0x26701000.
Initialising scheduler
Thread "Idle": pointer: 0x36702008, stack: 0xbf0000
Initialising xenbus
Thread "xenstore": pointer: 0x36702478, stack: 0x26600000
Dummy main: start_info=0x966880
Thread "main": pointer: 0x367028e8, stack: 0x26610000
"main" "root=/dev/sda1" "ro" "4"
vbd 2049 is hd0
******************* BLKFRONT for device/vbd/2049 **********
backend at /local/domain/0/backend/vbd/524/2049
Failed to read /local/domain/0/backend/vbd/524/2049/feature-barrier.
Failed to read /local/domain/0/backend/vbd/524/2049/feature-flush-cache.
2097152 sectors of 0 bytes
**************************
vbd 2064 is hd1
******************* BLKFRONT for device/vbd/2064 **********
backend at /local/domain/0/backend/vbd/524/2064
Failed to read /local/domain/0/backend/vbd/524/2064/feature-barrier.
Failed to read /local/domain/0/backend/vbd/524/2064/feature-flush-cache.
18874368 sectors of 0 bytes
**************************
[H[J Booting 'FreeBSD kernel'
root (hd0)
Filesystem type is ext2fs, using whole disk
kernel /boot/kernel/kernel vfs.root.mountfrom=ufs:da1s1,machdep.idle_mwait=0,bo
ot_verbose=1
xc_dom_probe_bzimage_kernel: kernel is not a bzImage
close blk: backend at /local/domain/0/backend/vbd/524/2049
close blk: backend at /local/domain/0/backend/vbd/524/2064
WARNING: loader(8) metadata is missing!
GDB: no debug ports present
KDB: debugger backends: ddb
KDB: current backend: ddb
APIC: Using the MPTable enumerator.
SMP: Added CPU 0 (BSP)
Copyright (c) 1992-2010 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 9.0-CURRENT #68: Sun Dec 12 03:52:29 UTC 2010
root@chch.daemonology.net:/usr/obj/i386.i386/usr/src/sys/XEN i386
WARNING: WITNESS option enabled, expect reduced performance.
Xen reported: 2659.998 MHz processor.
Timecounter "ixen" frequency 1953125 Hz quality 0
CPU: Intel(R) Xeon(R) CPU E5430 @ 2.66GHz (2660.00-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x1067a Family = 6 Model = 17 Stepping = 10
Features=0xbfe3fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
Features2=0x40ce3bd<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,DCA,SSE4.1,XSAVE>
AMD Features=0x20100000<NX,LM>
AMD Features2=0x1<LAHF>
Instruction TLB: 4 KB Pages, 4-way set associative, 128 entries
1st-level instruction cache: 32 KB, 8-way set associative, 64 byte line size
1st-level data cache: 32 KB, 8-way set associative, 64 byte line size
L2 cache: 6144 kbytes, 16-way associative, 64 bytes/line
real memory = 644874240 (615 MB)
Physical memory chunk(s):
0x00000000007d0000 - 0x0000000025b4dfff, 624418816 bytes (152446 pages)
avail memory = 621105152 (592 MB)
[XEN] IPI cpu=0 irq=128 vector=RESCHEDULE_VECTOR (0)
[XEN] IPI cpu=0 irq=129 vector=CALL_FUNCTION_VECTOR (1)
Event-channel device installed.
random: <entropy source, Software, Yarrow>
io: <I/O>
mem: <memory>
Pentium Pro MTRR support enabled
null: <null device, zero device>
nfslock: pseudo-device
[XEN] xen_rtc_probe: probing Hypervisor RTC clock
rtc0: <Xen Hypervisor Clock> on motherboard
[XEN] xen_rtc_attach: attaching Hypervisor RTC clock
rtc0: registered as a time-of-day clock (resolution 1000000us, adjustment 0.500000000s)
xs_probe: Probe retuns 0
xenstore0: <XenStore> on motherboard
Grant table initialized
xc0: <Xen Console> on motherboard
Device configuration finished.
procfs registered
Timecounters tick every 10.000 msec
[XEN] hypervisor wallclock nudged; nudging TOD.
lo0: bpf attached
xenbusb_front0: <Xen Frontend Devices> on xenstore0
xn0: <Virtual Network Interface> at device/vif/0 on xenbusb_front0
xn0: bpf attached
xn0: Ethernet address: 12:31:3d:00:80:50
xenbusb_back0: <Xen Backend Devices> on xenstore0
xctrl0: <Xen Control Device> on xenstore0
xbd0: 1024MB <Virtual Block Device> at device/vbd/2049 on xenbusb_front0
xbd0: attaching as da0
GEOM: new disk da0
xbd1: 9216MB <Virtual Block Device> at device/vbd/2064 on xenbusb_front0
xbd1: attaching as da1
WARNING: WITNESS option enabled, expect reduced performance.
GEOM: new disk da1
command 0xc2ab1800 not in queue, flags = 0xdeadc0de, bit = 0x10
panic: command not in queue
cpuid = 0
KDB: enter: panic
[ thread pid 12 tid 100024 ]
Stopped at kdb_enter+0x3a: movl $0,kdb_why
db>
root@blackbox:~/ec2#