Thanks for all the help. Hereby is the result of command `disklabel
sd0`, seems the drive is well detected by failed mounted:

> $ doas disklabel sd0
# /dev/rsd0c:
type: SCSI
disk: SCSI disk
label: SAMSANG ST1000LM
duid: 2b6c2b5b929f9a55

16 partitions:
#                size           offset  fstype [fsize bsize   cpg]

  c:       1953525168                0  unused
  i:       1758185664               64  4.2BSD   8192 65536 52270 # /mnt/hdd

On Wed, May 31, 2023 at 7:56 PM Otto Moerbeek <o...@drijf.net> wrote:
>
> On Wed, May 31, 2023 at 11:21:15AM +0100, Zé Loff wrote:
>
> > On Wed, May 31, 2023 at 05:25:07PM +0800, Jazzi Hong wrote:
> > > You made the point, thank you Maksim.
> > > I checked /mnt/hdd and nothing there.
> > > > # cat /etc/fstab
> > > 1593ab2ee369c420.b none swap sw
> > > 1593ab2ee369c420.a / ffs rw 1 1
> > > 1593ab2ee369c420.e /var ffs rw,nodev,nosuid 1 2
> > > 2b6c2b5b929f9a55.i /mnt/hdd ffs rw,noexec,nosuid,nodev 0 0
> > > > # doas sysctl hw.disknames
> > > hw.disknames=sd0:2b6c2b5b929f9a55,sd1:1593ab2ee369c420
> > > > # doas fdisk sd0
> > > Disk: sd0 geometry: 121601/255/63 [1953525168 Sectors]
> > > Offset: 0 Signature: 0xAA55
> > >             Starting         Ending         LBA Info:
> > >  #: id      C   H   S -      C   H   S [       start:        size ]
> > > -------------------------------------------------------------------------------
> > >  0: 00      0   0   0 -      0   0   0 [           0:           0 ] unused
> > >  1: 00      0   0   0 -      0   0   0 [           0:           0 ] unused
> > >  2: 00      0   0   0 -      0   0   0 [           0:           0 ] unused
> > > *3: A6      0   1   2 - 121601  80  63 [          64:  1953525104 ] 
> > > OpenBSD
> > > ============
> > > So /dev/sd0 is my NFS share hard disk, and when I tried to mount it 
> > > manually:
> > > > # doas mount /mnt/hdd
> > > mount_ffs: 2b6c2b5b929f9a55.i on /mnt/hdd: Invalid argument
> > > +++++++++++
> > > The error message mentioned about "Invalid argument" of mount, anything 
> > > wrong?
> > > So the problem now is why can not mount the drive even it's detected?
> >
> > It can detect the drive, but it doesn't find the i partition.  What does
> > disklabel sd0 say?
>
> Or it can find the i partition but mount_ffs does not like it for some reason.
> By convention i partitions are often FAT. But we need the dislabel to
> see what type it has.
>
>         -Otto



-- 
jazzi

Best Regard,

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