Currupted USB Drive with dd - Proper Usage?

Adam Williams awilliam at mdah.state.ms.us
Wed May 19 14:18:41 UTC 2004


you can try cat'ing the boot.iso to your usb drive.  cat boot.iso > 
/dev/sda1


David Hunt wrote:

> I was trying to create a bootable USB drive using the diskboot.img 
> file under /images in FC2 disc1. I had already done something similar 
> with FC1,  but didn't document it. So I have used this drive to 
> install FC1. I know it is possible.
>
> I originally just copied the files to the usb drive using cp after 
> mounting the image. That seemed to copy OK. But since the readme file 
> indicated that dd should be used, I decided to start from scratch, and 
> document the entire thing.
>
> I found a thread about using dd on the test-list and tried the same 
> command string. Assuming that I have mounted the disc1 iso at 
> /mnt/cdrom, and the usb drive is located at /dev/sda, with sda1 being 
> a bootable VFAT partition, verified with sfdisk, the command is...
>
> "dd if=/mnt/cdrom/images/diskboot.img of=/dev/sda1". The bad thing is 
> that it doesn't copy the files in the image, instead it created over 
> 4000 files and directories of just plain garbage. Can anyone tell me 
> how to use dd properly to transfer the contents of the image to the 
> usb drive? Or, why dd should be used at all? Why was dd recommended if 
> just copying the files would work?
>
> Feeling foolish, and wanting some guidance.
>
>
>






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