max. harddisk size on a CMD 649 controller

max. harddisk size on a CMD 649 controller

Post by Werner Rie » Fri, 05 Nov 2004 04:00:16


Hi all,

2 years ago, I bought a CMD 649 harddisk controller for PCI. It is
pretty no-name and I found nothing about it in the internet.

Does anyone happen to know the maximum size of harddisks this controller
supports? It is a ATA-100 controller, I don't know if that might help.

Thanks,
Werner

---- reply to werner instead of devnull ----
 
 
 

max. harddisk size on a CMD 649 controller

Post by Tod » Fri, 05 Nov 2004 09:45:05

I've found several reviews of PCI IDE cards with the CMD 649 controller
chip.
None of them said anything about 48-bit addressing or support for drives
larger then 137GB.
So I would guess that the max hard drive size is 137GBs

 
 
 

max. harddisk size on a CMD 649 controller

Post by Big Bil » Fri, 05 Nov 2004 11:16:19

On Wed, 03 Nov 2004 20:00:16 +0100, Werner Riebesel < XXXX@XXXXX.COM >



Try here:
http://www.yqcomputer.com/

Bill Funk
Change "g" to "a"
 
 
 

max. harddisk size on a CMD 649 controller

Post by Eric Gisi » Fri, 05 Nov 2004 12:49:02

I'm surprised you found any. They changed the name from CMD to SiI years ago.

Their current chip with LBA-48 support is SiI 680A.
 
 
 

max. harddisk size on a CMD 649 controller

Post by Werner Rie » Fri, 26 Nov 2004 01:54:15

Thanks (a bit late) for your answers.

The link to the siliconimage homepage was interesting, because even
there I could find 2 different "facts": It is able and it is not able to
support drives with more than 137 GB. My emailed question was not answered.
So I tried and bought a 160 GB drive. While booting, the CMD-BIOS
displays about 31 GB, but formatted with Linux 2.4.19 it shows the
correct size.
I wrote the drive completely full to be sure that no modulo 128 GB
effect takes place, and it did not.
So for me it works with 160 GB.

Werner