Beginning of wrap data set reading and writing for tape drives

A method for reading a data set from beginning of wrap (BOW) from tape, the method comprising:

• reading data set information from a tape directory (TD), the data set information including a first Data Set ID and first Tape Write Pass;
• in response to determining that the data set information corresponds to a BOW data set, setting a target Data Set ID to the first Data Set ID and a target Tape Write Pass to the first Tape Write Pass;
• and
• reading the BOW data set from tape using the target Data Set ID and the target Tape Write Pass.

A tape storage system comprising a tape drive, the tape drive configured to perform operations comprising:

• in response to reaching an end of wrap (EOW) while writing to tape, updating a tape directory (TD) to include first data set information for a first data set written at the EOW of a first wrap;
• writing a second data set using normal write procedure from a BOW of a second wrap, the second wrap following the first wrap;
• and
• overwriting, in the tape directory, the first data set information for the first data set written at the EOW with second data set information for the second data set written at BOW.