SetDefaultStartup
DefStartPtr pb ; pointer to an 8-byte DefStartRec structure returns none
pb is the address of an 8-byte DefStartRec parameter block structure. It contains the following fields:
Out-In Name Type Size Offset Description
-> sdPartition SignedByte 1 1 Reserved for the future OR
-> sdReserved1 SignedByte 1 0 Reserved for the future -> sdReserved2 SignedByte 1 1 Reserved for the future -> sdRefNum short 2 2 Negative = SCSI, Positive = Slot
Notes: If the default startup device is a slotDev, put its identification number in
the sdExtDevID field, specify the slot number in sdSlotNum, and fill the
sdSRsrcID field with the slot resource ID.
If the default startup device is a scsiDev, put its reference number in the
sdRefNum field.
If you're not specifying a default startup device, pass a 0 in the sdRefNum
field.
Reserved fields sdReserved1 and sdReserved2 should both be 0.