Re: Formatting FAT32 newfs_msdos returns read-only file system

[P Gman <patrickgunsolley%gmail.com@localhost>]

That fixed it.

Disk: /dev/rsd0
NetBSD disklabel disk geometry:
cylinders: 1907697, heads: 64, sectors/track: 32 (2048 sectors/cylinder)
total sectors: 3906963456, bytes/sector: 512

BIOS disk geometry:
cylinders: 1023, heads: 255, sectors/track: 63 (16065 sectors/cylinder)
total sectors: 3906963456

Partitions aligned to 2048 sector boundaries, offset 2048

Mounted
/dev/sd0e      1.8T    64K   1.8T   1% /mnt

Cheers!

On Mon, Sep 21, 2026 at 4:12 AM RVP <rvp%sdf.org@localhost> wrote:
>
> On Mon, 21 Sep 2026, P Gman wrote:
>
> > Partition table:
> > 0: Primary DOS with 32 bit FAT - LBA (sysid 12)
> >    start 1, size 3906963455 (1907697 MB, Cyls 0-243197/57/60)
> >        PBR is not bootable: All bytes are identical (0x00)
> >
>
> You can't start a MBR partition on sector 1 (ie. track 0) on HDD-type media.
> Start on track 1--or sector 2048 as per the alignment it wants to be in.
>
> -RVP