I have a textfile in the same directory of various patterns I think I used. It is called pattern1.txt
How many patterns do you have? Rather than manually listing every pattern you can think of, it's usually better to create a tokens file while btcrecover will use to create patterns for you. For example, if you think you used A, B, and C in your passphrase, but you can't remember what order, then your tokens file would look like this:
A
B
C
btcrecover would then combine those in every possible way and try all of the following:
A
B
C
AB
AC
BA
BC
BA
BC
ABC
ACB
BAC
BCA
CAB
CBA
As I understand the btcrecover will check it against already existing wallet in the directory. But I don't have the original wallet with the funds. The HDD failed with the full disk encryption, so it is lost as a file.
Do you know the address that the coins are stored on? If so. you can ask btcrecover simply to check for the address in question.