You can't format the hard drive like that. The format program is only for floppies.
But you don't need to format the hard drive. Just explain what exactly the problem is. What errors does it give you when you try to install 1.23? I don't think it is TSF conflicting. I have 1.23 AND TSF and they don't conflict with each other in any way.
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With our extreme gelatinous apology,
We beg to inform your Imperial Majesty,
Unto whom be dominion and power and glory,
There still remains that strange precipitate
Which has the quality to resist
Our oldest and most trusted catalyst.
It is a substance we cannot cremate
By temperatures known to our Laboratory.
~ E.J. Pratt
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