Jerry Geis wrote:

...

Jerry Geis wrote:

...

/ Hi

/>/ />/ I just grabbed an 8gig thumb drive, took disk 1 centos 4 i386, />/ copied the isolinux directory files to my thumbdrive, then ran syslinux />/ -sf /dev/sdc1 />/ on the device plugged it into my laptop and it does not boot. />/ />/ Is there a step(s) I am missing to get a bootable thumbdrive with centos? / I think you also need to add a boot sector to the drive. On my 64-bit system:

#dd if=/usr/lib64/syslinux/mbr.bin of=/dev/sdc

After doing your suggestion I get same thing it just sets there with a blinking cursor.

Jerry

I took an older 512MEG usb instead of my 8 GIG one, did the exact same steps and I get Could not find boot image: linux

I copied all files what is missing?

Jerry

I wish I could find the link but all I find now are instructions to use a Fedora script to create the thumb drive -- a script that doesn't seem to be immediately available for CentOS or RHEL.

I used the rpm referenced off this site if I recall right... http://fedoraproject.org/wiki/FedoraLiveCD/LiveCDHowTo http://fedoraproject.org/wiki/FedoraLiveCD/USBHowTo

jlc

Jerry Geis wrote:

Jerry Geis wrote:

Jerry Geis wrote:

	Jerry Geis wrote:
	> Hi
	> 
	> I just grabbed an 8gig thumb drive, took disk 1 centos 4 i386,
	> copied the isolinux directory files to my thumbdrive, then ran syslinux 
	> -sf /dev/sdc1
	> on the device plugged it into my laptop  and it does not boot.
	> 
	> Is there a step(s) I am missing to get a bootable thumbdrive with centos?
	
	I think you also need to add a boot sector to the drive. On my 64-bit system:
	
		#dd if=/usr/lib64/syslinux/mbr.bin of=/dev/sdc
	  

After doing your suggestion I get 
same thing it just sets there with a blinking cursor.

Jerry

I took an older 512MEG usb instead of my 8 GIG one, did the exact same steps and I get Could not find boot image: linux

I copied all files what is missing?

Jerry

Interesting on the 512M device I copied the vmlzi586 to linux and it starts to boot.... great... Now how do I get the 8GIG part to boot?

Is there a valid MBR on the flash device?

-Ross

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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.