A (or "crack") is a modified executable file ( ReBirth.exe or ReBirth RB-338.exe ) that bypasses this disc check. By applying the patch, users could run the software without the physical CD.
To use the patch, you typically install ReBirth 2.01 normally, copy the RB20FUL.DAT and RB20UPD.DAT files from your CD root to your hard drive, and then drop the patch files into your installation folder. TheKikGen/REBIRTH-NOCD: A small patch allowing ... - GitHub rebirth rb338 nocd patch upd