[CentOS] dd iso to flash drive

Fri Aug 14 11:50:05 UTC 2015
Johnny Hughes <johnny at centos.org>

On 08/13/2015 11:06 PM, Digimer wrote:
> On 13/08/15 09:15 PM, Johnny Hughes wrote:
>> On 08/13/2015 02:30 PM, Thomas Eriksson wrote:
>>> On 08/13/2015 11:34 AM, Digimer wrote:
>>>> Booting from the USB requires that there is a syslinux directory to boot
>>>> off of. In EL6, there is only isolinux, which is what booting from a DVD
>>>> uses. You should be able to copy isolinux to syslinux, rename the files
>>>> from s/iso/sys/ and then update syslinux.cfg to point to the USB drive
>>>> to boot from. Here's an example from my setup:
>>> Perhaps something went wrong with the 6.7 DVD, I haven't tested yet.
>>> It is definitely supposed to work by just using dd to a USB stick.
>>> Both 6.5 and 6.6 DVDs works just fine and so does the 6.7-network-
>>> install iso. I just installed a node 10 minutes ago using that one
>>> booted from a USB stick.
>> I just dd'ed the 6.7 DVD1 image to a usb key and booted fine with it on
>> a machine with normal BIOS.
>> I'll test it on a UEFI machine later, but it seems to work fine.
>> One thing to make sure is that the key is unmounted before you start //
>> I used this command:
>> sudo dd if=./CentOS-6.7-x86_64-bin-DVD1.iso of=/dev/sdc bs=4M
>> (Also make sure to copy to the device and not a partition .. ie, not
>> /dev/sdc1 .. /dev/sdc)
>> And make sure to use the command:
>> sync
>> after the dd .. and umount/eject the device if it remoted before
>> removing the key from the machine where you are copying it.
> My apologies for the mis-information.
> Did this change in a recent release? (The addition of syslinux to the
> ISO, that is)

I did not see a syslinux only isolinux .. it still boots and installs on
my Dell M4500 laptop as is.

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