On Thu, May 30, 2024, at 6:02 PM, nisp1953 wrote: > OpenBSD 7.5 GENERIC.MP#82 amd64 > > Hi all: > > I formatted a 2TB USB Hard Drive under Linux and get the following from > fdisk: > > # fdisk sd1 > Disk: sd1 geometry: 243201/255/63 [3907029167 Sectors] > Offset: 0 Signature: 0x0 > 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: 00 0 0 0 - 0 0 0 [ 0: 0 ] Unused > > I had to add a disklabel before I could mount it and use it on OpenBSD: > # disklabel sd1 > # /dev/rsd1c: > type: SCSI > disk: SCSI disk > label: BUP Slim > duid: 3cca86bd1e312e1f > flags: > bytes/sector: 512 > sectors/track: 63 > tracks/cylinder: 255 > sectors/cylinder: 16065 > cylinders: 243201 > total sectors: 3907029167 > boundstart: 0 > boundend: 3907029167 > > 16 partitions: > # size offset fstype [fsize bsize cpg] > c: 3907029167 0 unused > i: 3907029167 0 unknown > > It does have an signed DUID: > # sysctl hw.disknames > hw.disknames=sd0:c9251986e646484c,sd1:3cca86bd1e312e1f > > I have been using it for several days and I write to it both under > Linux and OpenBSD. > What am I doing wrong here that no partitions show un in fdisk? > Here is the relevant dmesg info: > scsibus4 at umass0: 2 targets, initiator 0 > sd1 at scsibus4 targ 1 lun 0: <Seagate, BUP Slim, 1708> > serial.0bc2ac300000NAEA4KVV > sd1: 1907729MB, 512 bytes/sector, 3907029167 sectors > /dev/sd1i: file system not clean; please fsck(8) > > Thanks in advance for any advice on this.
It looks like you have formatted an entire drive without partitioning it first. This isn't wrong *per se*, in the same way you might format certain types of external media without partitioning them, but it's not expected and could become a footgun if you go to perform an operation on the drive and forget that it isn't a filesystem within a partition. As you've noted, it does operate correctly. Brian Conway Owner RCE Software, LLC
