SuperDisk (120MB) vs 2HD Floppy (1.44MB)?

[bloc97]

The LS-120 Superdisk can write and read SD120MB Floppy disk and normal 2HD floppy.
However, I noticed that externally, the two are almost identical, which raises the question on how does the drive detect that it is an 120MB Floppy or an 1.44MB one?

If there is a way to force it to detect a 1.44 MB floppy as a 120MB one, is it possible to write 120MB of data on a normal floppy? Or is the inherent structure of the two different?

Here are some images

-Bloc97

 

[oczdude8]

They are different inside.

I could say the same about these two hard drives. They look the same, but one can be 1TB and the other can be 80gb

I definitely would not be able to write 1TB of data on a 80GB hard drive.

 

[bloc97]

Its not exactly the same... You can't compare two drives to two floppies...

Back to my first question, how does the drive detect which floppy disk has been inserted? There's no microchip or circuit in the floppy indicating its type...
Back in the days, by drilling a hole on the 720k floppy where there was one on 1.44mb floppies allowed you to write more data...

 

[oczdude8]

Give this a read:http://www.ebay.com/gds/SuperDisks-What-are-they-/10000000000850446/g.html

I believe the detection has to do with how the floppy is formatted.