tnguyen98765
Hi,
Just got my X299 DARK up and running. Noticed in bios that only SATA 0-5 shown in BIOS. Should it be like this?
I have 3x4TB WD Red connected to SATA 0, 1 and 3 and 1x Samsung SSD 1tb on SATA 2. But in Bios, it only shown Disk 1 and 3 but windows could see all disks. When i switched SSD to SATA 6, All WD disks now shown in bios, but not the SSD.
And every time i switched sata cable og unpluged/plugged any hardware, Bios seemed to reseted itself to default.
Anyone has advice on how to fix this?
Thanks

tnguyen98765
Also found ut that it was the CMOS battery which caused the resetting issue.
 

tnguyen98765

ZoranC

tnguyen98765
Thanks, now that you mentioned it, so i checked in the manual on page 55 where it shown port 2 is SATA 3/66 (PCH); which i have no idea what s that means and port 6/7 is SATA 3/66 (ASMEDIA). Bios only shown port 0-5, so I guess i ll stay away from port 2, 6 and 7.

 
You are welcome :) You are misinterpreting manual. All ports are SATA3 6G (standard). Ports 0-5 are using Intel's PCH chipset. Ports 6-7 are ASMedia. There is no reason for you to avoid using port 2. There is no reason to use ports 6-7 unless one needs to run Win7. ASMedia ports can be disabled through BIOS (check section Onboard Devices).
 

I m using port 0,1,3 and 4 now. They are all shown in the bios. For some unknown reason, when i used port 2, the disk did not shown in bios, but got access in windows.

tnguyen98765
The battery was drained, and i replaced with a new one. But i flashed the latest bios before i realized the battery issue. Should i reflash it now?
Thanks

ZoranC

tnguyen98765
[
tnguyen98765 what ty_ger07 said. But did you clear CMOS after you replaced battery?

No, I did not. But isnt removing the battery the same as clear CMOS?

ZoranC
In theory yes. But I've come across discussions claiming replacing of battery is not guaranteed to completely clear CMOS 100% of the time. That is why I do it as a proactive measure, just in case, to make sure I have good clean starting slate. It might be redundant but doesn't cost me anything considering I'm already doing it.
 
That is also why I tend to reflash BIOS if I don't know which state CMOS battery was in when it was originally flashed. Yeah it sounds, like ty_ger07 said, logically unnecessary because CMOS holds "just" settings but those settings are operating parameters so lets imagine worst case scenario that somehow bad battery triggered bad operating parameters while flashing which in turn resulted in imperfect flash that somehow went undetected and will later give me headaches. How likely that is? Very unlikely but weirder things have happened without any logical explanation (like not being able to move known good BIOS chip into known good mb that works perfectly fine with different chip) so I do it "just in case" as proactive measure considering I am already dealing with CMOS and this will add only few more minutes.

ZoranC

tnguyen98765
So what i should do now is clear CMOS and reflash bios?

-Personally- I would at least clear CMOS. Reflash BIOS? Many will say no need to, -personally- I don't do it if I know BIOS was flashed when CMOS settings were good, but otherwise I do it as "just in case" so I can trust it going forward. It takes only few minutes so I am not saving almost anything by not doing it and I am gaining peace of mind.