Thanks! I missed that somehow searching around. I'm glad there is a workaround at least.

On Mon, Aug 4, 2025, 5:57 PM Brian C. Lane <bcl@redhat.com> wrote:
On Mon, Aug 04, 2025 at 04:19:02PM -0400, Casey Fitzpatrick wrote:
> When using resizepart with "-s" a warning prompt is still printed when
> shrinking a partition. Then the command fails without actually prompting
> for Yes/No.
>
> Seen using parted version 3.6:
> ```
> $ sudo parted -s /dev/loop0 unit B resizepart 1 420478975
> Warning: Shrinking a partition can cause data loss, are you sure you want
> to continue?
> $ echo $?
> 1
> ```

parted defaults to not doing things that could lose data, so shrinking
is only supported in interactive mode. This comes up from time to time.
eg.

https://lists.gnu.org/archive/html/bug-parted/2024-06/msg00000.html

Brian

--
Brian C. Lane (PST8PDT) - weldr.io - lorax - parted - pykickstart