[svlug] Re: Compact flash devices

Andrew Bertola drew at drewb.com
Tue Jan 21 13:09:41 PST 2003


On Tue, 2003-01-21 at 12:40, David Hummel wrote:
> On Tue, Jan 21, 2003 at 01:47:54AM -0800, J C Lawrence wrote:
> > I *hope* that it appears as an ATA drive.
> 
> On Tue, Jan 21, 2003 at 02:00:11AM -0800, Andrew Bertola wrote:
> > The device I saw there looks like a pcmcia adapter at first glance,
> > but accomodates a cf card or microdrive.  It sits in a 3.5" drive bay
> > and has an ATA cable going right to primary master IDE.  The system
> > sees it as if it were an IDE drive (/dev/hda).
> 
> The same is true for a PCMCIA-CF adapter in a laptop.  The card is seen
> as an ATA device through the ide_cs module that loads when the card is
> inserted.  Actually the same is true for other types of flash memory
> PCMCIA adapters as well.  I have a 4-in-1 adapter that takes SD, MMC,
> SmartMedia, and MemoryStick.  At Fry's recently, I saw that they now
> have a 1GB CF card (expensive).

The difference is that these are not seen by bios as primary master IDE
drive.  The devices we mentioned are not pcmcia, they are ATA. 
Furthermore, the hardware presents them to the system as if they were an
IDE drive.  This makes them bootable devices on just about any system
without any special bios hacks.  Pretty slick, eh?

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