Re: Overriding sector size on disks?

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On 2013-11-01 22:45, Adrian Chadd wrote:
> Hi!
>
> I have an odd problem. That, honestly, can't be that odd.
>
> I have a bunch of SATA disks that when plugged into the laptop
> directly, show up as 512 byte sectors. But if I plug it in via this
> iomega USB caddy, they show up as 4k sector devices.
>
> Because of this, partitions just plainly don't work.
>
> Has anyone faced this? Is there some trick to do to get these things
> to go back to being 512 byte sector devices so one can use them?
>
> Similarly, because they show up as 512 byte sector devices on
> macosx/linux, they can read/write NTFS/MSDOS partitions on the thing.
> But if I plug it into freebsd, it shows up as a 4k sector device and
> things plainly don't work.
>
> Thanks!
>
>
>
> -adrian
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I use gnop -S 4096 to force 4k sectors when creating ZFS pools

I imagine you might be able to do gnop -S 512 to go the other way,
although I am not sure how to handle that for constant use.

- -- 
Allan Jude
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