What's the best way to reformat a USB stick?  It currently shows this in 
fdisk:
===========================================
Disk /dev/sda: 1010 MB, 1010826752 bytes
255 heads, 63 sectors/track, 122 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x91f72d24

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1         123      987104    6  FAT16
Partition 1 has different physical/logical endings:
     phys=(121, 254, 63) logical=(122, 227, 40)
===========================================
Not sure I understand the "physical/logical endings" comment that fdisk throws 
at me.


This is what sfdisk shows:
===========================================
# sfdisk /dev/sda
Checking that no-one is using this disk right now ...
OK

Disk /dev/sda: 1011 cylinders, 32 heads, 61 sectors/track
Old situation:
Warning: The partition table looks like it was made
  for C/H/S=*/255/63 (instead of 1011/32/61).
For this listing I'll assume that geometry.
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

   Device Boot Start     End   #cyls    #blocks   Id  System
/dev/sda1   *      0+    122-    123-    987104    6  FAT16
                end: (c,h,s) expected (122,227,40) found (121,254,63)
/dev/sda2          0       -       0          0    0  Empty
/dev/sda3          0       -       0          0    0  Empty
/dev/sda4          0       -       0          0    0  Empty
Input in the following format; absent fields get a default value.
===========================================

Grateful for any attempt to educate me on this!  :-)
-- 
Regards,
Mick