I installed on a 128MB USB flash drive a version of Linux and made the
drive bootable. When I used it in a computer set up to boot from such a
drive, all worked as expected.
I later did the same thing with a 256MB USB flash drive as I had done
with the 128MB flash drive, but, when I tried to boot up with it, it
didn't work.
I have read that it's impossible to boot up from some USB flash drives
and perhaps my 256MB drive is one of those. However, before giving up, I
thought I might try making an exact copy on the 256MB drive of the
contents of my 128MB drive and then re-trying booting up from the 256MB
drive.
However, I'm now stuck trying to make the exact copy. I've been using as
my guide the document at:
http://www.linuxquestions.org/questions/showthread.php?t=362506.
As I understand the document, it suggests that, when copying a smaller
partition to a bigger one, one should first make an image file of the
smaller partition, so I executed the following command:
dd if=/dev/sdb of=/home/leslie/Desktop/sdb.img
That got me a 125MB file on the Desktop called sdb.img.
I checked the soundness of the image by running:
sum -r /dev/sdb
sum -r /home/leslie/Desktop/sdb.img
The sums were identical.
The document next suggests mounting the image as if it were a drive,
giving the following commands (which I've edited to refer to my own system):
mount -o loop /home/leslie/Desktop/sdb.img /mnt/directory
cd /mnt/directory
cp -r * /mnt/sdc
However, when I run the first of those commands, I get the message:
mount: you must specify the filesystem type
I don't understand what it is I'm being directed to do here.
I think I should add the following information: both USB flash drives
have FAT16 filesystems; the partition that the image file is on has a
Linux filesystem; and I created the /mnt/directory directory before
running the command.
I'd be very grateful for any advice.
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