ATAPI Model: Vendor and
name of the ATAPI device.
ATAPI Type: Device type
(HDD, CD-ROM, CD-RW, DVD-ROM, scanner, streamer, etc.) installed on
the EIDE port.
Interface Type:
ATAPI device interface type (Parallel ATA, Serial ATA I, Serial ATA
II, Serial ATA III).
Physical Interface: Device
physical interface type (ATAPI, Serial ATAPI, SCSI, USB, Fibre
Channel, IEEE).
ATAPI Name: Full ATAPI
name.
Vendor Specific: Any text
information provide by the vendor.
CD Read Speed: Maximum read
speed of your CD device (current value in brackets).
CD Write Speed: Maximum
write speed of your CD device (current value in brackets).
DVD Read Speed: Current
read speed of your DVD device.
DVD Write Speed: Current
write speed of your DVD device.
Buffer Size: ATAPI device
buffer size.
Firmware Date: ATAPI device
firmware date.
Loading Mechanism: Disk
loading mechanism type.
Rotation Control: Rotation
control method (CLV/CAV).
Read Retry Count: Number of
read retries if the first attempt fails.
Write Retry Count: Number
of write retries if the first attempt fails (is important only for
rewritable CDs).
Compatibility:
Compatibility of the device with the certain ATA/ATAPI
standard.
Serial Number: Unique ATAPI
serial number.
Controller Revision:
Version number returned by the IDE-controller.
Logical Drives: List of
logical drives mapped to physical drive.
Command DRQ Type: Possible
values - 'Microprocessor DRQ', 'Interrupt DRQ', 'Accelerated
DRQ'.
Command Packet Size: Length
of supported ATAPI packet (12 or 16 bytes).
Access Method:
Location: Vendor and name
of ATA controller.
Device Location: Device
location on the ATA controller
Transfer Modes
PIO Mode Support: PIO
(Programmed Input/Output) is a way of moving data between device in
a computer in which all data must pass through the processor. The
higher the number is, the higher the data transfer rate is (For PIO
mode 4 - 16.6 MBps).
SW DMA Mode Support: Number
of the supported single word DMA mode. Active: SW DMA mode currently enabled by
BIOS.
MW DMA Mode Support: DMA
(Direct Memory Access) is a transfer protocol where a peripheral
device transfers information directly to or from memory, without
the system processor being required to perform the transaction.
Apart from the previous mode, single word DMA modes can be
supplanted by multiword DMA modes. Active: MW DMA mode currently enabled by
BIOS.
UDMA Mode Support: Number
of the UltraDMA mode. Theoretical transmission speed for UltraDMA
mode 2 is 33 MB/s, mode 5 - 100 MB/s. Some chipsets don't support
UltraDMA mode (for example, chipsets i430VX and lower don't support
it while i440BX supports only mode 2). Active: UltraDMA mode
currently enabled by BIOS.
Reading Features
