FPGA Central

How do i know how many cylinders, drives and sectors
a particularr compact flash has??????

i have a 256mb sandisk compact flash

sachink321@gmail.com wrote:
>How do i know how many cylinders, drives and sectors
>a particularr compact flash has??????

>i have a 256mb sandisk compact flash

The concept of CHS is since long outdated. But..
It depends in what context you use it. If it's an old machine with x86-BIOS
you usually enter <cylinders> heads=63 sectors=255
There are three translation modes for x86-BIOS calls (INT 13h) to physical
sectors CHS, LBA, and Large. Try to use LBA if that won't work use Large or as
last resort CHS mode.

If you build a system that is free from x86 baggage then LBA is the mode
to use.

Furhter reading:
* http://averstak.tripod.com/fatdox/physical.htm
* http://www.boot-us.com/gloss11.htm

640k ram & 512M hdd ought to be enough for anyone..

sachink321@gmail.com wrote:

> How do i know how many cylinders, drives and sectors
> a particularr compact flash has??????
>
> i have a 256mb sandisk compact flash
>
Issue the identify command to the card and parse the sector worth of
data that it returns. It's all in there.