SATA 1-SATA 4 disappears whenever I use PCIE3
Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=34207
Printed Date: 31 Dec 2024 at 2:03am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: SATA 1-SATA 4 disappears whenever I use PCIE3
Posted By: Reptilian
Subject: SATA 1-SATA 4 disappears whenever I use PCIE3
Date Posted: 31 Mar 2024 at 10:50pm
|
I am using AsRock Z790 TaiChi Intel I9 48GB RAM x2 with 4090 in PCIE-1 My M.2, 1, 3, 4, 5 are fully used with 4TB M.2 I have devices connected for SATA 1, SATA 2, and SATA 3, SATA 6 Whenever I plug in any card, LAN-card, M.2 Extension card in PCI-E 3, my SATA 1-4 drives will 'disappear'on my BIOS, in which case I can't boot my windows (my bootable drives are in SATA -1 (?)) Can you tell me what caused the probelem ? |
Replies:
Posted By: Xaltar
Date Posted: 01 Apr 2024 at 12:22am
|
It's in your board's spec sheet on it's product page. PCIe3 shares lanes with SATA. When you populate the PCIe3 slot it disables 4 SATA ports. This is because the CPU and chipset have a limited number of PCIe lanes to split between all the IO on your board. This is why HEDT platforms exist, they have a much higher number of PCIe lanes and thus can accommodate more PCIe based devices. It's one of the reasons I still haven't upgraded my Threadripper 2950x system, I have 64 PCIe lanes vs just 20 from intel's 14th gen CPUs. ASRock is pretty good with providing connectivity options, allowing you to maximize your PCIe lane usage but there are limits to consumer grade systems. If you have not populated all your SATA ports try swapping the drives that are on disabled ports to other ones until you get it all working. I hope this helps. ------------- 
|
Posted By: Reptilian
Date Posted: 01 Apr 2024 at 2:08am
|
I'm very impressed by your answer (would u plz tell me where I can find the info about PCIE-3 sharing with SATA 1-4 channels?) I'd also like to ask what if I use PCI-E 2 channel for my LAN-card, would this work? Is PCI-E 2 channel free in my case (I have devices connected to SATA 5-6) |
Posted By: Reptilian
Date Posted: 01 Apr 2024 at 2:31am
I think I got the info here: *Supports Intel® Volume Management Device (VMD) Supports NVMe SSD as boot disks If M2_1 is occupied, PCIE1 will downgrade to x8 mode. If PCIE2 is occupied, M2_1 will be disabled. M2_1 and M2_2 cannot be populated simultaneously. **If PCIE3 is occupied, SATA3_0~3 will be disabled."" Is this my case? So I got to make sure my M2 does not occupy M2_1 slot so as to use PCI-E 2? |
Xaltar wrote:Posted By: Xaltar
Date Posted: 01 Apr 2024 at 6:14am
|
That is correct, yes. It can be a bit of a juggling game but ASRock allows quite a bit of flexibility and options to extract the most out of your available lanes. Good luck  -------------
|
Posted By: Reptilian
Date Posted: 01 Apr 2024 at 4:27pm
Once again, I'd love to thank you. This is something what I suspected so far but I lack the kind of knowledge in this area. Hardware these days have changed so fast that I think I start to miss some knowledge regarding its limitations and know-hows |