slackware13.1 errors

Dear Friend,

I am also getting same problem. I am using slackware13.1 image with Amazon(ec2) bundle with (aki-407d9529 aki-4c7d9525) both aki, I am getting same problem below error.

2011-01-20T18:05:29+0000
Xen Minimal OS!
start_info: 0xb10000(VA)
nr_pages: 0x6a400
shared_inf: 0xbf706000(MA)
pt_base: 0xb13000(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: b1f
max_pfn: 6a400
Mapping memory range 0xc00000 - 0x6a400000
setting 0x0-0x76000 readonly
skipped 0x1000
MM: Initialise page allocator for e6c000(e6c000)-0(6a400000)
MM: done
Demand map pfns at 6a401000-7a401000.
Heap resides at 7a402000-ba402000.
Initialising timer interface
Initialising console ... done.
gnttab_table mapped at 0x6a401000.
Initialising scheduler
Thread "Idle": pointer: 0x7a402008, stack: 0x6a030000
Initialising xenbus
Thread "xenstore": pointer: 0x7a402478, stack: 0x6a040000
Dummy main: start_info=0x966880
Thread "main": pointer: 0x7a4028e8, stack: 0x6a050000
"main" "root=/dev/sda1" "ro" "4"
vbd 2049 is hd0
******************* BLKFRONT for device/vbd/2049 **********

backend at /local/domain/0/backend/vbd/171/2049
Failed to read /local/domain/0/backend/vbd/171/2049/feature-barrier.
Failed to read /local/domain/0/backend/vbd/171/2049/feature-flush-cache.
20971520 sectors of 0 bytes
**************************
vbd 2050 is hd1
******************* BLKFRONT for device/vbd/2050 **********

backend at /local/domain/0/backend/vbd/171/2050
Failed to read /local/domain/0/backend/vbd/171/2050/feature-barrier.
Failed to read /local/domain/0/backend/vbd/171/2050/feature-flush-cache.
312705024 sectors of 0 bytes
**************************
vbd 2051 is hd2
******************* BLKFRONT for device/vbd/2051 **********

backend at /local/domain/0/backend/vbd/171/2051
Failed to read /local/domain/0/backend/vbd/171/2051/feature-barrier.
Failed to read /local/domain/0/backend/vbd/171/2051/feature-flush-cache.
1835008 sectors of 0 bytes
**************************
[H[J
GNU GRUB version 0.97 (1740800K lower / 0K upper memory)

[ Minimal BASH-like line editing is supported. For
the first word, TAB lists possible command
completions. Anywhere else TAB lists the possible
completions of a device/filename. ]

grubdom> [9;10H
root@support:~#

How to fix this issue, Please help me,

Thanks for advance.

RAMESH