If the drive is found by Pmount, Gparted should see it.
In Gparted.
Select the floppy drive as the device to look at.
Format.
It has been a very long time, but I seem to remember you need to format a floppy as fat 16.
This may work.
(This assumes the floppy drive is dev/fd0)
Fat16 filesystem --> mkfs -t msdos /dev/fd0
Ext2 filesystem --> mkfs -t ext2 /dev/fd0
root# mkfs
Usage:
mkfs [options] [-t <type>] [fs-options] <device> [<size>]
Make a Linux filesystem.
Options:
-t, --type=<type> filesystem type; when unspecified, ext2 is used
fs-options parameters for the real filesystem builder
<device> path to the device to be used
<size> number of blocks to be used on the device
-V, --verbose explain what is being done;
specifying -V more than once will cause a dry-run
-V, --version display version information and exit;
-V as --version must be the only option
-h, --help display this help text and exit
For more details see mkfs.