AHCI mode

claes · Jun 29, 2023

Sorry but I still don’t understand. Did you remove the battery? Is it dead? Or did you manually make the change and the battery question is a herring that you just want to be prepared for in the unlikely scenario?

In any case it seems like something fishy is going on here… You should definitely be able to boot back into AHCI if that’s how the OS was installed, even after switching modes in the BIOS. When you install windows in AHCI mode it installs a special driver to support it, and AHCI itself is backwards compatible IIRC. What shouldn’t work is trying to boot from a IDE device in AHCI mode.

PerfectWave · Jun 29, 2023

P4-630 said:
Since I had my own desktop computers from 2006 till now, I never replaced 1 CMOS battery...

lucky you i have asus maximus formula vi and to remove the cmos i had to disassemble almost the entire motherboard! The most retarde mobo in the world!

Marcus L · Jun 29, 2023

Redirecting

answers.microsoft.com

Had to use this registry edit a few times when trying to change from ide to ahci

pavle · Jun 29, 2023

Just buy a good quality new CR2032 battery and you can have your AHCI and eat it too.

lemonadesoda · Jun 29, 2023

ir_cow said:
Never had to replace a battery either. I personal know of 1 person who has so far.

oof. lucky. i've replaced multiple CR2032's

it's a real pain on headless servers or firewalls, because when the battery goes and BIOS settings are lost, the machines don't boot, but wait at console for user to respond to the error by F2 or whatever.

this issue might be machine specific, in that, other mainboards might ignore lost BIOS settings and just boot to defaults - however, my supermicros don't do that, and wait for user to confirm that boot to default is wanted.

bug · Jun 29, 2023

lemonadesoda said:
oof. lucky. i've replaced multiple CR2032's

it's a real pain on headless servers or firewalls, because when the battery goes and BIOS settings are lost, the machines don't boot, but wait at console for user to respond to the error by F2 or whatever.

this issue might be machine specific, in that, other mainboards might ignore lost BIOS settings and just boot to defaults - however, my supermicros don't do that, and wait for user to confirm that boot to default is wanted.

It makes sense, if you really think about it. On a server, booting with setting the user didn't dial in can lose you a lot of money. Think, for example, that for security reasons you need to turn off IME. Then the CMOS battery dies and IME turns itself on. You wouldn't even know about it if you're not actively monitoring (though chances are the reset date will raise a few red flags on its own).

P4-630 · Jun 29, 2023

ir_cow said:
Never had to replace a battery either. I personal know of 1 person who has so far.

My dad had to replace one on his Asus P45 board that was running since 2010, he replaced the battery in 2020/21 or so....

Shrek · Jun 29, 2023

I imagine it makes a difference if the computer is left plugged in or not.

But I can't risk it on a main computer, I need to just keep working and at worst just change the battery and not worry about getting it back into AHCI mode.

Shrek · Jul 28, 2023

Found the cause:
Advanced Host Controller Interface - Wikipedia

"Some operating systems, notably Windows Vista, Windows 7, Windows 8, Windows 8.1 and Windows 10, do not configure themselves to load the AHCI driver upon boot if the SATA controller was not in AHCI mode at the time the operating system was installed. Although this is an easily rectifiable condition, it remains an ongoing issue with the AHCI standard."

bug · Jul 28, 2023

Shrek said:
Found the cause:
Advanced Host Controller Interface - Wikipedia

"Some operating systems, notably Windows Vista, Windows 7, Windows 8, Windows 8.1 and Windows 10, do not configure themselves to load the AHCI driver upon boot if the SATA controller was not in AHCI mode at the time the operating system was installed. Although this is an easily rectifiable condition, it remains an ongoing issue with the AHCI standard."

That is a known Windows snafu. But I didn't realize it was still with us as recently as Win10.

claes · Jul 29, 2023

Shrek said:
Found the cause:
Advanced Host Controller Interface - Wikipedia

"Some operating systems, notably Windows Vista, Windows 7, Windows 8, Windows 8.1 and Windows 10, do not configure themselves to load the AHCI driver upon boot if the SATA controller was not in AHCI mode at the time the operating system was installed. Although this is an easily rectifiable condition, it remains an ongoing issue with the AHCI standard."

My friend, I told you a month ago

claes said:
Sorry but I still don’t understand. Did you remove the battery? Is it dead? Or did you manually make the change and the battery question is a herring that you just want to be prepared for in the unlikely scenario?

In any case it seems like something fishy is going on here… You should definitely be able to boot back into AHCI if that’s how the OS was installed, even after switching modes in the BIOS. When you install windows in AHCI mode it installs a special driver to support it, and AHCI itself is backwards compatible IIRC. What shouldn’t work is trying to boot from a IDE device in AHCI mode.

Shrek · Jul 29, 2023

So I tried an experiment; I installed Windows 11 and then turned on AHCI mode... same blue screen as in Windows 10; back to IDE.

And here was me hoping things were fixed in Windows 11 after having read:

Advanced Host Controller Interface - Wikipedia

en.wikipedia.org

"Some operating systems, notably Windows Vista, Windows 7, Windows 8, Windows 8.1 and Windows 10, do not configure themselves to load the AHCI driver upon boot if the SATA controller was not in AHCI mode at the time the operating system was installed. Although this is an easily rectifiable condition, it remains an ongoing issue with the AHCI standard."

The good news is that these experiments are on a spare machine.

Ruru · Jul 29, 2023

Shrek said:
I thought the batteries lasted about 5 years.

My fat PS2 has still its original battery working even after 20+ years. A normal CR2032 like motherboards have.

Shrek said:
So I tried an experiment; I installed Windows 11 and then turned on AHCI mode... same blue screen as in Windows 10; back to IDE.

And here was me hoping things were fixed in Windows 11 after having read:

Advanced Host Controller Interface - Wikipedia

en.wikipedia.org

"Some operating systems, notably Windows Vista, Windows 7, Windows 8, Windows 8.1 and Windows 10, do not configure themselves to load the AHCI driver upon boot if the SATA controller was not in AHCI mode at the time the operating system was installed. Although this is an easily rectifiable condition, it remains an ongoing issue with the AHCI standard."

The good news is that these experiments are on a spare machine.

Why? Just put it on AHCI and keep it as AHCI. IDE is more for compatibility with older OS.

Shrek · Jul 29, 2023

I moved it to AHCI, it blue screened (on Windows 11)

Ruru · Jul 29, 2023

Shrek said:
I moved it to AHCI, it blue screened (on Windows 11)

You didn't install it with AHCI on?

Shrek · Jul 29, 2023

Correct; I assumed Windows 11 was carrying the drivers. Bad assumption.

theFOoL · Jul 30, 2023

Like I said earlier... AHCI and IDE to me is just all about reliability. IDE is slower yes but less stress? On the hardware. AHCI is Faster

Ruru · Jul 30, 2023

theFOoL said:
Like I said earlier... AHCI and IDE to me is just all about reliability. IDE is slower yes but less stress? On the hardware. AHCI is Faster

IIRC IDE is just for compatibility as WinXP for example doesn't support AHCI by default; you need to load the AHCI drivers during the install progress. But as even a modified XP install media usually supports AHCI, I don't see any reason to use the IDE mode especially with never OSes.

Shrek · Jul 30, 2023

It's been an education and I can only thank all here.

PerfectWave · Jul 31, 2023

this problem really sucks as the ahci-raid same problem

A Computer Guy · Jul 31, 2023

ir_cow said:
Never had to replace a battery either. I personal know of 1 person who has so far.

sLowEnd said:
Nah they last way longer than 5 years. More like 15 years or more. Among the PCs I still own, I've only had to replace the one on a 20 year old Socket 478 board.

They're like....Game Boy carts.

Earlier in the year I noticed the battery ran out on my Asus 775 P5E-WS and needed to be replaced. 14yr battery life seems kinda amazing.

Shrek said:
I imagine it makes a difference if the computer is left plugged in or not.

But I can't risk it on a main computer, I need to just keep working and at worst just change the battery and not worry about getting it back into AHCI mode.

Yet another reason to get that wizbang PC (referring to your other thread on the topic)

Shrek · Jul 31, 2023

A Computer Guy said:
Yet another reason to get that wizbang PC (referring to your other thread on the topic)

I can hardly wait; on the other hand it gets superceeded so quickly. Not an issue with what I run now

I have a 5 year old iMac at work, and it doesn't feel any faster.

End of support for Windows 10 happens in 2 years, so might as well wait for then; I am hoping for cooler running CPUs.

System Name	boomer--->zoomer not your typical millenial build
Processor	i5-760 @ 3.8ghz + turbo ~goes wayyyyyyyyy fast cuz turboooooz~
Motherboard	P55-GD80 ~best motherboard ever designed~
Cooling	NH-D15 ~double stack thot twerk all day~
Memory	16GB Crucial Ballistix LP ~memory gone AWOL~
Video Card(s)	MSI GTX 970 ~~GOLDEN EDITION~~ RAWRRRRRR
Storage	500GB Samsung 850 Evo (OS X, *nix), 128GB Samsung 840 Pro (W10 Pro), 1TB SpinPoint F3 ~best in class
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Mouse	CM Spawn ~cmcz R c00l seth mcfarlane darawss~
Keyboard	CM QF Rapid - Browns ~fastrrr kees for fstr teens~
Software	integrated into the chassis
Benchmark Scores	9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999

System Name	Gaming PC / I7 XEON
Processor	I7 4790K @stock / XEON W3680 @ stock
Motherboard	Asus Z97 MAXIMUS VII FORMULA / GIGABYTE X58 UD7
Cooling	X61 Kraken / X61 Kraken
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Video Card(s)	Gainward GLH 1080 / MSI Gaming X Radeon RX480 8 GB
Storage	Samsung EVO 850 500gb ,3 tb seagate, 2 samsung 1tb in raid 0 / Kingdian 240 gb, megaraid SAS 9341-8
Display(s)	2 BENQ 27" GL2706PQ / Dell UP2716D LCD Monitor 27 "
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Keyboard	Razer BlackWidow Chroma / Razer BlackWidow Chroma
Software	Windows 1064bit PRO / Windows 1064bit PRO

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Cooling	Thermalright Peerless Assassin SE White
Memory	TeamGroup T-Force Delta RGB 32GB 3600Mhz
Video Card(s)	PowerColor Red Dragon Rx 6800
Storage	Fanxiang S660 1TB, Fanxiang S500 Pro 1TB, BraveEagle 240GB SSD, 2TB Seagate HDD
Case	Corsair 4000D White
Power Supply	Corsair RM750x SHIFT

System Name	ICE-QUAD // ICE-CRUNCH
Processor	Q6600 // 2x Xeon 5472
Memory	2GB DDR // 8GB FB-DIMM
Video Card(s)	HD3850-AGP // FireGL 3400
Display(s)	2 x Samsung 204Ts = 3200x1200
Audio Device(s)	Audigy 2
Software	Windows Server 2003 R2 as a Workstation now migrated to W10 with regrets.

Processor	Intel i5-12600k
Motherboard	Asus H670 TUF
Cooling	Arctic Freezer 34
Memory	2x16GB DDR4 3600 G.Skill Ripjaws V
Video Card(s)	EVGA GTX 1060 SC
Storage	500GB Samsung 970 EVO, 500GB Samsung 850 EVO, 1TB Crucial MX300 and 2TB Crucial MX500
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Case	Raijintek Thetis
Audio Device(s)	Audioquest Dragonfly Red :D
Power Supply	Seasonic 620W M12
Mouse	Logitech G502 Proteus Core
Keyboard	G.Skill KM780R
Software	Arch Linux + Win10

AHCI mode

claes

PerfectWave

Marcus L

Redirecting

pavle

lemonadesoda

bug

P4-630

Shrek

Shrek

bug

claes

Shrek

Advanced Host Controller Interface - Wikipedia

Ruru

S.T.A.R.S.

Advanced Host Controller Interface - Wikipedia

Shrek

Ruru

S.T.A.R.S.

Shrek

theFOoL

Ruru

S.T.A.R.S.

Shrek

PerfectWave

A Computer Guy

Shrek

System Name	AlderLake
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Video Card(s)	MSI RTX 2070 Super Gaming X Trio
Storage	Samsung 980 Pro 1TB + 970 Evo 500GB + 850 Pro 512GB + 860 Evo 1TB x2
Display(s)	23.8" Dell S2417DG 165Hz G-Sync 1440p
Case	Be quiet! Silent Base 600 - Window
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Power Supply	Seasonic Focus Plus Gold 750W
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Software	Windows 11
Benchmark Scores	Cinebench R23 (Single Core) 1936 @ stock Cinebench R23 (Multi Core) 23006 @ stock

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Display(s)	Dell P2416D (2560 x 1440)
Power Supply	EVGA 500W1 (modified to have two bridge rectifiers)
Software	Windows 11 Home

System Name	4K-gaming
Processor	AMD Ryzen 7 5800X @ PBO +200 -20CO
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