The output you posted from the bootinfo script is substantially less than one would expect. Did you just post part of it?
The info you posted shows Grub2 on sdc and on partition sdc1. Grub Legacy does not show. There is no menu.lst file with Grub2, the menu file is called grub.cfg so I don't know where you are getting menu.lst file?

I would suggest running the bootinfo script again and posting the entire output.

Hi Pablo!
There are conflicts: As far as I know, Debian Lenny (you are sure that you installed it, I suppose) came with Grub legacy (Grub 0.9) and not with Grub 1.9. Your output to find Grub shows that you twice have Grub 1.9 installed; how can that be? On the other hand you posted a menu.lst (belongs to Grub legacy) although Grub 0.9 was not found. That means: Your Debian installation is incomplete or broken.
I repeat my suggestion (answer #6):
With SuperGrubDisk you most times can start Windows or Linux - I would try it; everyone with an installed Windows should have that disc.
With PartedMagic you can access all files and edit partitions and test the hd.
alfredo

Hi everybody and sorry by the wait. I was trying with SuperGrubDisk and doesn't see the external usb hd, so the only device that it can see is the internal one, it means the /dev/sda.
Any idea why supergrub disk doesn't see the external hd? it should be mounted before?

Regards.

Hi Pablo!
You see the menu of SuperGrubDisk, I suppose.
I have never heard that SGD doesn't see a hd in working order.
You have important Data on that hd? Then I would try to save them with a live Linux (CD, DVD or USB).
In any case I would burn an image of PartedMagic on CD - to access files and see if your hd is recognized.
alfredo

Hi, Alfredo!, parted magic can see the external hd like /dev/sdc, by the other hand Lenny net installer sees it like /dev/sdb, which is a little strange i think...

Regards.

Hi Pablo,
as I wrote before, the numbering of hds and USB sticks (a, b, c) depends on the order you have plugged in the devices.
I label all partitions and sticks with GParted as e.g. rootLinux, SanDisk,...
But first we should know:
1. You have to save Data?
2. Which Linux do you want to install?
I recommend to save Data, partition your drive, ask if it is okay and then install Linux.
alfredo

Hi Alfredo!, the data isn't important so i can destroy it. And i trying install Debian Lenny through net installer cd version. So as was commented on before post, if a boot with net installer Debian cd, in rescue mode i can see the external hd like /dev/sdb. if a boot with parted magic cd, i see it like /dev/sdc, which that sounds me strange.

Thanks for your time!

Regards

Hi Pablo!
Seeing /dev/sdc: You have plugged in an USB stick or an USB modem with integrated memory card?
As you don't have important Data, I would parition the external hd with GParted (on PartedMagic) and make a fresh installation.
After having booted from PM: Could you please post the output of
lowercase "L" like list and
external hd plugged in.
alfredo

Hi Alfredo!, i found that on grub prompt using find command for look where the file stage1 is, for grub the device is (fd1) !!!????. So the only way that grub can start on external hd is through one of extras items that come with the cd with the option usb, but now can boot the kernel. Just i need more time and will tell you the news.

Regards.

A usb cdrom drive may be listed as "removeable devices in Bios", so you have to actually move it to the top of list.