LUKS in Legacy install

I’ve successfully installed Manjaro 2137 on a USB using UEFI install and LUKS.

It boots properly after asking for password

In Legacy install, everything installs to the USB without any problems but when booting, it just sits there doing nothing , after password is entered.

It says ‘attempting to decrypt’ and that’s it. Sits there

What could the problem be?

Thanks

Could be anything, but most likely your bootloader.

(Yes that’s just as short and helpful as the info you provided)