max. harddisk size on a CMD 649 controller

  • Thread starter Thread starter Werner Riebesel
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Werner Riebesel

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 ----
 
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
 
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 ----
Click to expand...

Try here:
http://www.siliconimage.com/products/sii0649.asp

Bill Funk
Change "g" to "a"
 
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.
 
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
 
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