NTFS 4 Terabyte drive problems on FreeBSD?

Dan Nelson dnelson at allantgroup.com
Tue Feb 12 23:50:21 UTC 2013

In the last episode (Feb 12), Scott Ballantyne said:
> Hi,
> I'm trying to mount a 4 TB drive (The Seagate Backup-Plus) on FreeBSD
> 9.0 Generic, using 
> mount -t ntfs /dev/da0s1 /mnt
> It fails with:
> g_vfs_done() da1s1[READ(offset=0, length=1042)]error=22
> mount_ntfs: /dev/da1s1 bad argument

That's a strange length (1042).  I would have expected a multiple of the
device blocksize (4096 in the case of the Backup Plus).
> However, I can mount a 2 TB ntfs drive with no problem, using the same
> command, and the 4TB drive checks out fine in Windows. 
> Does anyone know if this limitation exists, and if there is a
> work-around? I only need READ access to this drive.

You can try the sysutils/fusefs-ntfs port; the ntfs code in the base system
hasn't had much work done on it lately.

	Dan Nelson
	dnelson at allantgroup.com

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