Hitachi CinemaStar P7K500 Specifications page 189

SE (Status, bit 5) SE (Stream Error) shall be set to one if an error has occurred during the
execution of the command and the RC bit is set to one, In this case the LBA
returned in the Sector Number registers shall be the address of the first sector in
error, and the Sector Count registers shall contain the number of consecutive
sectors that may contain errors. If the RC bit is set to one when the command
is issued and ICRC, UNC, IDNF, ABRT, or CCTO error occurs, the SE bit shall
be set to one, the ERR bit shall be cleared to zero, and the bits that would
normally be set in the Error register shall be set in the error log.
HITACHI Deskstar & CinemaStar P7K500 Hard Disk Drive specification (Rev 1.1)
181