ATA_KNOWN_PRESENCE
if (((ostat0 & 0xf8) != 0xf8 || (ch->flags & ATA_KNOWN_PRESENCE)) &&
if (((ostat1 & 0xf8) != 0xf8 || (ch->flags & ATA_KNOWN_PRESENCE)) &&
if ((ch->flags & ATA_KNOWN_PRESENCE) == 0 &&
ch->flags |= ATA_NO_SLAVE | ATA_SATA | ATA_KNOWN_PRESENCE;
ch->flags |= ATA_KNOWN_PRESENCE;