[wplug] help needed to install ubuntu in external USB drive.

[Vikram Sai Balaji]

I bought a 500GB external usb drive for my hp compaq nc6230 laptop.
Partitioned it into multiple partitions. The first partition is 100GB. i
tried installing ubuntu 7.04.on the first partition of that disk. While in
install i gave "/dev/sdb" in the boot loader section so that i can use my
external usb drive in whatever system i want.  When i start with USB
external hard disk as primary boot device it showed me Grub with ubuntu
generic. but when i choose ubuntu generic or recovery mode to proceed it
shows the following error.

Error 15: File not Found
Press any key to continue...

it takes me back to Grub. Here are the steps that i did for installation
1. Live CD. --> Chose "Text Installtion" so that i dont need to wait for
live boot up.
2. Chose keyboard,time,users,etc.
3. During partition it showed both my internal hard disk and external usb
drive.
4. Chose the first partition of USB drive and gave mount point as "/" and
chose to format it.
5. After installing packages it gave me option for boot loader. i gave
"/dev/sdb" since the internal hard disk was shown as "/dev/sda" and external
was shown as "/dev/sdb"
6. Boot loader went fine.
7.Restarted my laptop and chose "USB drive" as the boot device.

Then the Grub loaded and rest is Error 15:



Here is the USB drive's fdisk info
/dev/sdb1   *           1       12768   102558928+  83  Linux
/dev/sdb2           12769       60801   385825072+   5  Extended
/dev/sdb5           12769       14043    10241406   83  Linux
/dev/sdb6           14044       15318    10241406   83  Linux
/dev/sdb7           15319       16592    10233373+  83  Linux
/dev/sdb8           16593       18505    15366141   83  Linux
/dev/sdb9           18506       19142     5116671   82  Linux swap / Solaris
/dev/sdb10          19143       60801   334625886    b  W95 FAT32

* --> boot flag.

My grub details that is present in /dev/sdb1 is given below.

title        Ubuntu, kernel 2.6.20-15-generic
root        (hd1,0)
kernel        /boot/vmlinuz-2.6.20-15-genericroot=UUID=15ab805b-8ae3-40c3-91bf-88997637b445
ro quiet splash
initrd        /boot/initrd.img-2.6.20-15-generic
quiet
savedefault

title        Ubuntu, kernel 2.6.20-15-generic (recovery mode)
root        (hd1,0)
kernel        /boot/vmlinuz-2.6.20-15-genericroot=UUID=15ab805b-8ae3-40c3-91bf-88997637b445
ro single
initrd        /boot/initrd.img-2.6.20-15-generic

title        Ubuntu, memtest86+
root        (hd1,0)
kernel        /boot/memtest86+.bin
quiet

### END DEBIAN AUTOMAGIC KERNELS LIST

# This is a divider, added to separate the menu items below from the Debian
# ones.
title        Other operating systems:
root


# This entry automatically added by the Debian installer for an existing
# linux installation on /dev/sda1.
title        Debian GNU/Linux, kernel 2.6.19 Default (on /dev/sda1)
root        (hd0,0)
kernel        /boot/vmlinuz root=/dev/hda1 rw ramdisk_size=100000 lang=us
apm=power-off nomce vga=791
initrd        /boot/initrd.img
savedefault
boot
#Below this is my other ubuntu installations.

Can anyone help me fix this issue?
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