[CentOS] isolinux on a pendrive from disk 1

Kirk Bocek t004 at kbocek.com
Fri Jun 6 03:16:18 UTC 2008

Jason Hartley wrote:
> If your goal is to boot off the USB stick and install I have does the
> following steps recently with a 4gig flash drive:
> 1. Need to setup the MBR
>     - ex. cat /usr/lib/syslinux/mbr.bin > /dev/sdb
> 2. Use fdisk to create two partitions and make the first bootable:
>      - The first should be 14 megs, fs type should be set to "b" (W95 FAT32)
>      - The second can be the rest of the drive
>      - Make sure set the boot flag on the first partition (many
> instructions I found on the web did not mention and it was key)
> 3. Now you need to dd off the bootdisk.img on the first disk to the
> first partition:
>      - ex. dd if=/mnt/images/diskboot.img /dev/sdb1
> At this point you should have a bootable flash drive and have the
> option of creating a file system on the second partition then adding
> the ISO(s) to it along with a kickstart config file.  I used the
> aboved steps on a 4gig stick and was able to put a custom kickstart
> config file, along with a DVD iso  on the second partition.

How about authoring a HowTo page on the wiki? This is some good stuff I 
haven't seen documented anywhere. That's a great idea to use diskboot.img on 
one partition with the install image on a second partition.

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