Flash Drive

Gary P list at akwebhosting.net
Thu Oct 13 03:01:28 UTC 2005


----- Original Message ----- 
From: "Jason L Tibbitts III" <tibbs at math.uh.edu>
To: "Discussion list about Kickstart" <kickstart-list at redhat.com>
Sent: Wednesday, October 12, 2005 6:37 PM
Subject: Re: Flash Drive


>>>>>> "GP" == Gary P <list at akwebhosting.net> writes:
>
> GP> All the readme and how'tos i found so far on the net dont
> GP> work. has anyone gotten a flash stick to bootup and actually
> GP> load??
>
> Sure, I did it just by dd'ing diskboot.img to a flash drive I had
> lying around.  I found it a little small so I just looked at the
> script that generates it (/usr/lib/anaconda-runtime/mk-images.i386)
> and made a larger image with room for more kernels.
>
> Here's the basics:
>
> mkdir -p $TOPDESTPATH/images/fobpath
> dd if=/dev/zero of=$TOPDESTPATH/images/diskboot.img bs=1M count=6 
> 2>/dev/null
> mkdosfs $TOPDESTPATH/images/diskboot.img
> $SYSLINUX $TOPDESTPATH/images/diskboot.img
> mount -o loop $TOPDESTPATH/images/diskboot.img $TOPDESTPATH/images/fobpath
> cp -r $TOPDESTPATH/isolinux/* $TOPDESTPATH/images/fobpath/
> grep -v local $TOPDESTPATH/images/fobpath/isolinux.cfg > 
> $TOPDESTPATH/images/fobpath/syslinux.cfg
> rm -f $TOPDESTPATH/images/fobpath/isolinux.cfg
> umount -f $TOPDESTPATH/images/fobpath
> rmdir $TOPDESTPATH/images/fobpath
>
> change the count=6 on the second line to approximate the size of your
> flask drive if you want to fill it.  I used 126 for a 128MB drive I
> had around.
>
> But honestly, if diskboot.img didn't work for you then I think you
> must have some other issue.  The image worked for me on pretty much
> every USB-bootable machine I have access to.
>
> You aren't dd'ing the image to a partition on the flash drive, are
> you?  It should be something like:
>
> dd if=diskboot.img of=/dev/sda
>
> not
>
> dd if=diskboot.img of=/dev/sda1
>
> - J<
>
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>
>
Ok, did what you said (dd if=/dev/sda of=bootdisk.img bs=1M count=510) and 
on reboot i am getting boot failed





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