3Fh 00h 68 All pages Returns all Mode Sense pages in incrementingorder.3Fh FFh 100 All pages includingsubpagesReturns all Mode Sense pages includingsubpages in incrementing order.Note: The number bytes column does not include the Parameter List Header and the (optional) BlockDescriptor.A page code of 3Fh indicates that all mode pages shall be returned to the application client. These pageswill be returned in ascending order except for Mode Page 00h. Mode Page 00h shall be returned after allother Mode Pages.Mode Parameter ListEach Mode Sense page begins with a four byte Parameter List Header, and optionally followed by an eightbyte Block Descriptor before one or all Mode Sense pages are returned.Bit 7 6 5 4 3 2 1 0Byte0 - 3 Mode Parameter Header4 - n Mode Sense Page(s)Mode Parameter HeaderEach Mode Sense page begins with a four byte Mode Parameter Header. This header has the followingstructure:Bit 7 6 5 4 3 2 1 0Byte0 Mode Data Length1 Reserved2 Reserved3 Block Descriptor LengthField descriptions:Mode Data Length:This field indicates the number of bytes of parameter information the media changer is returningas a result of this command, excluding the Mode Data Length but including the three additionalParameter List Header bytes. If a block descriptor was requested this count is also added to theMode Data Length.Block Descriptor Length:If the DBD bit is cleared in the CDB the media changer may return an eight byte Block Descriptor.When a Block Descriptor is returned the Block Descriptor Length will report 8. When the DBD bitis set the media changer will not return Block Descriptors and therefore the Block DescriptorLength will report 0.Chapter 3. Supported SCSI Commands 3-31
