Re: Freedos 1.1 Released some days ago

Rod Pemberton wrote:

The box says the SSD is rated for:
Read 120-140MB/s
Write 80-93MB/s

Passmark V5.0 sequential read test says:
18.7 MB/s

A large file copy gives (read and write):
710MB in 103s for 6.89MB/s

It must be a 16-bit polled I/O mode.

From the BIOS info, it's 16-bit either as PIO MODE 4 or UDMA 5.
DOS is probably using the PIO mode. I don't know what WinSE is
using.

From the various ATA spec's:
"PIO 4 120ns 16.7Mb/s ATA"
"UDMA 5 40ns 100.0Mb/s ATA/ATAPI-6"

On my win-98 system, when copying files between two SATA drives using
file explorer (copy and paste), I get between 40 or 38 MB/sec (depending
on how you define a mega-byte).

WinSE is faster than blink-of-the-eye quick for just about
everything.

There's probably some write-caching going on by win-98. But you're
still using the BIOS to access the drive under win-98.

An easy way to tell what drive is using esdi_506.pdr is to rename
the file (while booted into DOS) and then start windows. Any
drive showing up in the list that says is being used in
DOS-compatibility mode is a drive that was using ESDI_506.pdr.

WinSE already says DOS compatibility mode for everything ...

I was assuming that you had nothing showing as DOS compatibility mode
before renaming ESDI_506.pdr.

Anything that was showing 32-bit mode *before* renaming esdi_506 and
then shows up as DOS mode *after* renaming esdi_506 is something that
was/does use esdi_506 for access.

But if you've got the modified esdi_506.pdr then you presumbly won't
have the 137 gb barrier problem.

Anything SATA or USB, is a compatibility mode device since I
can't seem to locate drivers for them for Win98/SE/ME.

If you have a SATA-1 controller then there should be win-98 drivers
available for it. I've found this to be a universal rule. SATA-2 (or
SATA-II) controllers are a different story.

If your SATA controller is a SiL 3112/3114 chip (Silicon Image) then
there are win-98 drivers available for it.

If you search for drivers and only find win 2k/XP and higher, go and
download the 2k/XP drivers. Then look inside - you'll always find a
win-9x/me directory.

b) RAID is off because:

1) RAID requires *two* drives, AFAIK.

When you turn raid on, you are turning off IDE compatibility or
emulation mode. But that *doesn't* mean you are using the drive (or
drives) in raid mode (or as a raid pair).

It sounds stupid, but that's generally how the BIOS of these SATA
controllers work. If you want the controller to be seen by the OS as a
real SATA controller (and not as an IDE-emulated controller) you need to
turn raid on. You need to go one step further and use the bios or other
software to actually make a raid pair or raid set (if you want to do
that).
.

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