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By Linux_420 at 2011-12-08 00:35

BE CAREFUL NOT TO OVERWRITE THE MBR OR BOOTLOADER ON YOUR PRIMARY BOOT DISK! BACK THEM UP BEFORE YOU BEGIN THIS PROCESS!


Here is a detailed example of how to make a bootable USB disk:

What you will need:

Hardware:
  • A USB disk large enough to hold the .iso image (which may be compressed using gzip or zip)
  • A device which has a BIOS capable of booting from USB. (It is possible to boot from another disk and chainload to the USB disk but that is beyond the scope of this tutorial.)

Software:
  • A Linux operating system (I am using Fedora 16 .. Debian based distros' filesystem is different. Things like package managers and the location of memdisk and vesamenu.c32 will differ.)
  • The ISO image you wish to boot
  • Bash (or your favorite shell)
  • Gedit (or your favorite text editor - I'm not sure if both <cr> and <lf> are acceptable as I do not use Windows)
  • Syslinux
  • Memdisk (included with Syslinux)
  • Vesamenu.c32 (included with Syslinux)
  • Parted/Gparted
  • Fdisk (optional)
  • mkfs.vfat

Steps:

1. Open a shell (i.e. Bash)

2.Make sure you have the packages required and that they are up to date. Use one of the following:

Quote:
yum list installed | less
or

Quote:
yum list installed | grep syslinux
yum list installed | grep etc.
Note: Debian based distros use apt-get as the default package manager. Also you may want to check out Yum Extender if you are using Fedora

3.Plug in your USB disk and determine which device node it is by issuing the following command:

Quote:
sudo fdisk -l
or by issuing the following command after you plug in your USB disk:

Quote:
dmesg | tail
4.Unmount the usb disk using the following command:

Quote:
sudo umount /dev/sdb1
5.Make a FAT filesystem on the partition you wish to boot from using the following command:

Quote:
sudo mkfs.vfat /dev/sdb1
6. Install a MBR (master boot record) to your USB disk if you don't already have one or the one you have is not working properly. Use the following command:

Quote:
sudo syslinux -m /dev/sdb
7.Install Syslinux to the partition you wish to boot from by issuing the following command:

Quote:
sudo syslinux -i /dev/sdb1

sudo parted /dev/sdb set 1 boot on
Note: if your device node happens to be /dev/sdc2 you would use the following command:

Quote:
sudo parted /dev/sdc set 2 boot on
8.Mount the USB disk:

Quote:
mkdir /media/usb_disk
mount /dev/sdb1 /media/usb_disk
9.Now copy the files you need to the root directory (or the directory you chose to install to) of the partition which has Syslinux installed on it.

Note: The location of these files is different on Debian based systems. I am using an Enterprise style filesystem. On Debian based distros the location will be something like /usr/lib/syslinux/ but I'm not 100% positive.

Quote:
cp -v /user/share/syslinux/memdisk /media/usb_disk
cp -v /user/share/syslinux/vesamenu.c32 /media/usb_disk
10.Copy the iso image to a directory on your USB disk using the command:

Quote:
mkdir /usb_disk/distro
cp /user/username/Downloads/distro.iso /media/usb_disk/distro/
11.Create a file named syslinux.cfg in the directory you installed Syslinux to. Use the following command:

Quote:
touch /media/usb_disk/syslinux.cfg
12.Open syslinux.cfg with your favorite text editor and edit it to look something like this:

Quote:
DEFAULT vesamenu.c32

TIMEOUT 30

PROMPT 1
#DISPLAY boot.msg
#F1 boot.msg
#F2 f2
#F3 f3

LABEL gb
KERNEL memdisk
INITRD /GeexBox/geexbox-2.0-i386.iso
APPEND iso raw

LABEL dsl
KERNEL memdisk
INITRD /DamnSmallLinux/dsl.iso
APPEND iso raw
Note: Versions of Syslinux prior to 4.04 also needed the raw parameter. Syslinux can handle disk images that have been compressed with zip or gzip. The smaller files load faster and CRC checks provide data integrity. Just compress the image and use the compressed image filename in the menu entry.

^^ This last note is a direct quote from http://www.wonkity.com/~wblock/docs/html/pxe.html


HOPE THIS WAS USEFUL! ;)
HAVE A LOOK AT THE THINGS I TRIED GETTING THIS TO WORK!
http://www.linuxquestions.org/questi...g-file-635911/

by vzv on Fri, 2015-01-02 18:00
vzv -vvvvvvvvvr

by madhavareddy29 on Thu, 2017-06-15 23:28
Thank you

by Trihexagonal on Sat, 2017-07-15 05:02
That's a very nice writeup, but seems like a lot of work to do something that can be done with one line of code on my FreeBSD box.

Insert your USB stick and make sure it is NOT mounted. Use the cd command to change directories to where the .iso is you want to work with, then run:

Code:
# dd if=./nameof.iso of=/dev/da0 bs=512k
I've used that command to make bootable USB sticks with Debian and Kali .iso files on several occasions. Of course, the syntax for where the USB stick resides will be different on Linux (sda2 maybe?) but I don't know why it wouldn't work.

Please correct me if I am mistaken.

by BW-userx on Sat, 2017-07-15 09:20
Quote:
Originally Posted by Trihexagonal View Post
That's a very nice writeup, but seems like a lot of work to do something that can be done with one line of code on my FreeBSD box.

Insert your USB stick and make sure it is NOT mounted. Use the cd command to change directories to where the .iso is you want to work with, then run:

Code:
# dd if=./nameof.iso of=/dev/da0 bs=512k
I've used that command to make bootable USB sticks with Debian and Kali .iso files on several occasions. Of course, the syntax for where the USB stick resides will be different on Linux (sda2 maybe?) but I don't know why it wouldn't work.

Please correct me if I am mistaken.
when I use this dd thingy -- and am in the same dir as the iso - I do not use that ./ leading I just
Code:
dd if=NameOf.ios of=/dev/sdxx && sync
works Okey Dokey for me. just saves two key strokes is all leaving out the ./

by jefro on Sat, 2017-07-15 20:26
The original post was from 2012.


  



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