Book List question

Hello Guys and Gals,

I have another complicated question for you.

When my Kobo update the last time it made all the books on the memory card not work. Thou they were still on the sd card you could not access them.

So today I removed the card and did a format of the card to clear it so i could put the books back onto it.

Now Before I put the sd card in i checked the kobo but the books are still listed in the book list even thout they are no longer on the sd card and it is not plugged in. So i have 166 books showsing in my kobo list but if you try to read on of the 166 it says to download the books.

My question is how do i get the bad books removed from the Kobo list so I could use Calibre and put them back on the sd card that I just formatted?
It would be very time consuming to have to go thru 166 books on the kobo to delete each bad book 1 by 1.

When I have the Kobo Connected to my system and Calibre loaded it only see's the goo books and not the bad 166. So the bad books only show on the kobo book list itself.

I hope this makes sense as sometimes my language or terms are wrong.
I hoped when i removed the sd card to format it that the bad books would be removed from the Kobo list but I was wrong.

Please Let me know.
Thanks in advance
Gren