Zitat von Fernando im Beitrag #15

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That was not a good idea. The BIOS should be named Z87ST.CAP.

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File name, including extension must be Z87ST.CAP (ONLY)

Here's image: https://ibb.co/9353ky1

It's named in same scheme as yours uploaded, I misunderstood first time...tried with another 4gb stick, no luck...but it flashes for longer time like 1 min and then goes solid, will find another smaller sized tomorrow.

Success!
- Looks like smaller sized USB stick was key (2GB).
- Later on proceeded to clean install, before installing disabled fast boot, secure boot and CSM. (Turned fast boot on later again after installation)

Everything works great got some amazing nvme (970 evo 500gb) speeds. Secondary disk for apps is 960GB ssd. And for data I got 1TB hdd (later on maybe Ill add raid card and another 1TB which i have laying around).

Now I'll research forum too see best drivers for my chipset.

@AOX - Flashing for one minute or so sounds correct, on modern systems it gets faster as it nears the end, unsure about on older systems.

Great you got it sorted out finally

Thanks @Fernando - I wish there was a way for us to tell in advance when MMTool should be used

Thanks, so never any issue at all with Aptio IV and MMTool 4.5? If not, the I will always use MMTool for Aptio IV and UEFITool only for Aptio V, then I wont have to wonder if MMTool should be used on the older BIOS or not.

Hello again @Lost_N_BIOS, I figured I'd keep this in the same thread incase the 10 other people with my board come looking for help too. I have used the bios mod you made for me for a few months now- sometimes it lasts a little bit, but since I'm re-hackintoshing my PC I have to reboot a lot. Currently I have to reflash the bios every time I reboot no matter what boot drive is selected. I made several more attempts using UEFITool and MMTool to make them, but none work any better. Do you know of any reason why this might be? It just seems odd that it works for the first boot and freezes on the Asus screen without going into the bios on the next attempt.

Thank you, Nick

@orz_nick - I read back in the thread, and I thought you ended up using BIOS Fernando made you? From about the middle of page one, I assumed you would already be sending this drive back for RMA, you haven't yet?
I would have, or at least picked up a second NVME for testing to see if same issue is present or not, since they are so cheap now. What adapter are you using? And what slot do you have the device installed into?
Have you ran Memtest86+ for extended amount of time, like overnight, to see if there is no memory errors? And, have you ran any in OS stability tests for any longer amount of time, like 8-12+ hours, such as Prime95?

To me, this sounds like some memory or CPU instability, or a faulty NVME (This mainly about the NVME issues mentioned on page one) Your last comments above, sound like a possibly bad CMOS battery, or something is going bad on the board maybe, or some instability as mentioned.
Why do you have to keep reflashing exactly? What happens if you wait on that second reboot at the Asus screen, does it remain there forever? Does it do this same one reboot OK, second frozen, if you remove the NVME from the system (Physically) and boot to USB or other HDD/SSD? << Please test that

@Lost_N_BIOS
Yes the drive was sent in, all is fine with that as far as we're aware of. Maybe around the holidays I'll pick up another, or a different adapter (the one I have now is just one off amazon, no name brand).
As for the stability, I'll run tests, but I'm completely stable playing games for several hours at a time in Windows and don't have any side affects regarding that through normal and heavy use. The drive never randomly goes out either, which I believe should eliminate the issue of a bad adapter and drive.

What I've now noticed is that when it doesn't boot, the read/write light doesn't flash at all- but I know it'll load if the light flashes quickly in a few seconds of booting. This leads me to believe the BIOS doesn't detect it sometimes.

I tested taking it out:
Stops loading bios, freezes on post screen, no drive activity
- Take out the drive
Nothing happens, can't enter the bios
- Plug it back in
The post screen goes away for a second and the drive light flashes, but it returns back to the post screen and I am not able to access the bios once again.
- Everything is fixed by reflashing the bios.

I'll use my friends CMOS battery and see if it stops freezing- that does make sense.
If none of this sparks interest or a direction I'll run stability tests.

Thank you for coming back and responding!

Hi

I currently have the same motherboard Asus Sabertooth z87
Ive tried moding the bios using both the UEFItool and the MMTool, I have even tried the mod that was posted earlier in the post (was able to see the drive for 1 boot)

these are the steps that I have tried

-download latest bios version from asus site
-Using the UEFItool, followed the steps and added the Nvmecpress file at the end of the bios in the dxe section
-used the asus bios renamer to rename the bios
-copied to usb and shut down to flash bios, usb is inserted into flashback port pressed the bios flashback button (starts blinking blue)
-when i use the UEFItool it will keep blinking for around 1min to 1.5 min and there is usb activity. after that the light turns off.
-after powering on the machine i have to re-config bios, but drive is not there.
-the only time i saw the drive is when i used the mod that Fernando created but after a reboot it disappeared.

when using the MMtool, after trying to do the flashback with the usb, it lights up for a few blinks and then the usb doesn't show activity and the flashblack light stays solid.

I have tried using several usbs ranging in size from 16gb-512mb

Am I missing a step?

Thanks

Hi all
Great forum. I stumbled across it because I have a z87 sabertooth that I'd like to install an NVME drive into.

I've followed all the steps and windows 10 can't find the drive when it comes time to install.

What I've tried:
Flashing BIOS modded according to Fernando's method in the guide;
Flashing BIOS @Fernando uploaded to this thread;
Flashing older BIOS version (to make sure that my USB drive could be used for flashing).
Switching to a different PCIE slot.

Disable CMS, Fast boot, Security Boot and set SATA mode to AHCI pre-install.

I booted into am ubuntu linux liveCD and it can't seem to find it either, although my experience in Linux isn't great so I can't state this definitely!