Re: Running HGST's DFT utility from a flash drive
Celejar wrote:
> On Wed, 21 Oct 2020 14:06:55 -0400
> > But I suspect that we now know why the DFT utility can't see it:
> > because DOS can't see it, because DOS doesn't have any SATA
> > support. The best that can be done is providing a virtualized
> > interface, and that won't let you interrogate the disk.
>
> Ah, okay. Well, the BIOS does offer an IDE mode for the controller, but
> even that doesn't allow DFT to work. Are you suggesting that that's
> because it's not "real" IDE, but some kind of virtualized interface?
Yeah. IDE stands for "integrated drive electronics" and was
essentially a wrapping of the 8-bit (and later 16-bit) PC/AT bus
that fed into a controller mounted on the drive.
The successor was called ATA, and later still redubbed PATA
(parallel ATA) when SATA was invented.
You've got a multiterabyte SATA drive. It speaks a 1.5, 3 or 6 Gb/s
serial protocol with a command set that only looks like IDE if you run
them both through a blender. For one thing, I'm pretty sure IDE couldn't
handle more than... here's the doc:
https://tldp.org/HOWTO/Large-Disk-HOWTO-4.html
The 528MB, 137GB, and 4.2GB limits are all coming into effect
here, possibly others.
-dsr-
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