I have an Iomega Prestige 1TB disk, "USB 3.0 up to 5Gbit/s",

OpenBSD 4.9 (GENERIC.MP) #794: Wed Mar  2 07:19:02 MST 2011
    dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC.MP
...<snip>...
Dec 17 09:53:54 len /bsd:  port 2 configuration 1 interface 0 "iomega
LDHD-UP3"
rev 2.10/0.04 addr 4
Dec 17 09:53:54 len /bsd: umass0: using SCSI over Bulk-Only
Dec 17 09:53:54 len /bsd: scsibus2 at umass0: 2 targets, initiator 0
Dec 17 09:53:54 len /bsd: sd1 at scsibus2 targ 1 lun 0: <OEM, Ext Hard
Disk, 0000> SCSI3 0/direct fixed
Dec 17 09:53:54 len /bsd: sd1: 953169MB, 4096 bytes/sec, 244011446 sec total
Dec 17 09:53:54 len /bsd: cd1 at scsibus2 targ 1 lun 1: <Virtual, CDROM, >
SCSI0 5/cdrom fixed

(which of course has the built-in CD-ROM emulator containing Windows
backup software.)

The sectors are definitely 4k bytes.  How can I re-partition it given that
fdisk won't adjust the MBR?

# fdisk -e sd1
Unable to read MBR

(DOS partitions, not disklabel partitions.  disklabel works just fine.)

thanks

--John

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