Trouble getting external install to load

[A Student]

I'm trying to get my external HDD to boot BT3, thanks to PureH@te for a very thorough explaination and walk-through, got everything done, no problems, until i go to boot and get "No Operating System Found." According to the BIOS it should be able to boot USB, but nothing, not even an Error.

Here's what im working with:

BT3 installed on a 14Gb external with 3 partions

Computer is:
Toshiba Satellite A105-S4201
Bios was updated in Feb. to the newest release.

Thanks

[terminal86]

You have to give us some more detail if u want us to help.
Please post your lilo.conf / grub.conf (depending on what bootloader you use)
And make sure you set the bootable flag on your disk/partition.

[A Student]

lilo.conf

lba32
boot /dev/sda1
prompt
timeout=60
change-rules
reset
vga=791
image = /boot/vmlinuz
root = /dev/sda3
label = Backtrack 3

this is in the first partition, in this case sda1

and when i go into cfdisk the sda1 is flagged as boot

here is the output of cfdisk:
cfdisk 2.12r

Disk Drive: /dev/sdc
Size: 15002910720 bytes, 15.0 GB
Heads: 64 Sectors per Track: 32 Cylinders: 14307

Name Flags Part Type FS Type [Label] Size (MB)
------------------------------------------------------------------------------
sdc1 Boot Primary Linux ext3 53.48
sdc2 Primary Linux swap 2000.69
sdc3 Primary Linux ext3 12947.82



i think its listing it as sdc now because it has two other harddrives mounted right now also??? the one internal and an other external?

what else would you like?

[terminal86]

According to the BIOS it should be able to boot USB

Are you sure you set USB to the default Boot Option in your BIOS?

In case you did, without avoiding to guess arround , try that:

lba32
boot /dev/sdc1
prompt
timeout=60
change-rules
reset
vga=791
image = /boot/vmlinuz
root = /dev/sdc3
label = Backtrack 3