How to use mkntfs, I get "not a block device"

Thomas Mueller mueller6724 at
Wed Feb 4 10:01:03 UTC 2015

> On 4 Feb 2015, at 09:03, O'Connor, Daniel <darius at> wrote:
>> On 3 Feb 2015, at 22:59, Thomas Mueller <mueller6724 at> wrote:

>> I can't format a partition for NTFS with fusefs-ntfs port, using mkntfs.

>> Error message is

>> root at amelia:~ # mkntfs /dev/gpt/SeaExp1-03
>> /dev/gpt/SeaExp1-03 is not a block device.
>> Refusing to make a filesystem here!

> The port should really patch this out (IMO) - it doesn't make sense on FreeBSD since it doesn't _have_ block devices.
> If you pass it the -F flag it should let your format the disk.

> I filed which fixes it.

> Daniel O'Connor

Should I wait for the bug fix to show in sysutils/fusefs-ntfs, or should I just do
mkntfs -F /dev/gpt/SeaExp1-03 ? 
after kldload fuse .

I thought I'd seen error messages referring to block devices, or "not a block device" in FreeBSD and NetBSD before.


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