On 5/30/25 8:33 PM, Samuel Sieb wrote:
On 5/30/25 7:33 PM, Tim via users wrote:
On Fri, 2025-05-30 at 06:52 -0700, ToddAndMargo via users wrote:
I have a functioning/bootable USB drive. I want to make an
ISO out of it but do not want the extra space included
that dd gives
I think you'd have to play with sizing:
Shrink the partition of the working drive down to what it needs to be
(with some spare). Use something like dd to dump that *partition* to a
file, not dumping the entire drive.
It's not really a partition. There are one or two apparent partitions,
but taking that won't get you the iso back. You also need the boot
sectors and whatever else. The difficulty is finding out how much of
the flash drive is used by the iso. There should be some way to find
the extent of the iso, but I couldn't find any tool that will give that
number.
I fired up gparted on the flash drive:
https://imgur.com/Z7oqbqZ.png
There is a bunch of empty space on sdc1,
but the fly in the ointment is sdc2: the
fat16 UEFI_NTFS partition stuck at the
very end where is has to reside.
Looks like I am going to have to hold my
nose and just accept the empty space and
use dd.
Thank you all for the tips!
-T
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