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4.3 Identify Drive Information
The Identity Drive Command enables Host to receive parameter information from the device. The parameter
words in the buffer have the arrangement and meanings defined in below table. All reserve bits or words are
zero.
Data Field Type Information
General configuration – bit significant for
Non-removable device
Default number of cylinders
Default number of sectors per track
Number of sectors per device
Number of ECC Bytes passed on Read/Write Long
Commands
Firmware revision in ASCII
Maximum number of sector that shall be
transferred on Read/Write Multiple commands
Capabilities-LBA/DMA Supported
PIO data transfer cycle timing mode 2
Word 54-58, 64-70 and 88 are valid
Current numbers of cylinders
Current sectors per track
Data Field Type Information
Current capacity in sectors (LBAs)(Word 57= LSW,
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