[CentOS] how to install centos on the attached external usb hard disk?

[hadi motamedi]

On Sun, Jul 25, 2010 at 9:07 PM, Les Mikesell <lesmikesell at gmail.com> wrote:

>
> You can't do an image clone to a smaller target.  If you need to do this,
> get a
> matching or larger target drive.  Or, install from scratch on the USB
> device and
>  then copy over any files you need from the source drive.
>
> If you want to do much disk cloning, look at the bootable clonezilla-live
> CD.
> It makes it simple and knows enough about most filesystems to only copy the
> used
> blocks, but it still can't move a large source to a smaller disk - although
> it
> could put a compressed image there that could be used as a source to
> restore the
> larger drive.  If you are just looking for a full backup and don't expect
> to run
> from the USB, that might work for you.
>
> --
>   Les Mikesell
>    lesmikesell at gmail.com
>
>
>
> _______________________________________________
>
I tried to install from the installation media . I put the install cd and
then tried for 'expert' and select /dev/sda instead of /dev/hda as the media
to install on. But at the end my machine cannot be booted from the usb disk.
Can you please let me know how can I make it as bootable disk?
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