Crystal Kolipe <kolip...@exoticsilicon.com> wrote:
> On Tue, Dec 21, 2021 at 06:04:28PM -0500, Rob Whitlock wrote:
> > A problem seems to be that there is no disklabel entry for the ExFAT
> > partition.
>
> You probably wrote a BSD disklabel to the disk before creating the ExFAT
> partition.
>
> If there is no on-disk disklabel, the kernel will create one in memory based
> on information from other partitioning schemes, (MBR, GPT). So in this case,
> as you change those MBR or GPT partitions, those changes will be reflected in
> the disklabel that the kernel sees.
>
> Once you actually write a disklabel to the disk, that on-disk disklabel is
> then used in place of calculating one each time the disk is attached, and the
> automatic parsing of MBR and GPT partition information stops.
>
> To solve your problem, you need to add the details of the ExFAT partition to
> the BSD disklabel. You can either do that manually with the disklabel
> command, or since you do not have any OpenBSD partitions on the disk, you
> could overwrite the on-disk disklabel, allow the kernel to generate one
> automatically with the correct information, then optionally force it to be
> written to the disk by running disklabel and entering 'w' at the interactive
> prompt.
This can be investigated with
disklabel -d
(BTW, when the disklabel is constructed from other information on the disk,
we call it a "spoofed label")
