For anyone with a similar issue, the BIOS refresh had reset to defaults and MacOS needs the SATA interface to be in AHCI mode rather than IDE mode - switched in the BIOS and SATA has re-appeared in System Report.
Weird one, aren’t they all!
Everything working fine then flashed the BIOS (to the same version it transpires!) and installed a pair of Xeon 5690’s.
Re-fit drives, I boot into Clover via a SATA SSD and have a SATA archive drive, both detected in the BIOS.
Clover then installs the NVMe driver...
Booted normally today. So seems to have fixed itself. Only suggestion I can make for others is to enter Recovery and it appears that Time Machine makes snapshot backups which it saves locally (not on a Time Capsule) and restoring to a point prior to the problem appearing, appears to have solved...
Boot into Recovery and even though I have a Time Capsule connected, the Recovery App could only see the recent Time Machine snapshots located on my normal boot drive. If I wind back to Dec 22nd then the Hackintosh boots fine and everything appears to work. If I then reset, I get the same effect...
I was just about to suggest that. Circa 1000rpm is basic tickover / normal operation. Normal PC fans run up to 5000rpm when things get warm, more likely a bearing issue as you discovered. Glad its sorted.
Hi, just recovering from COVID (not recommended) so my brain isn't functioning correctly at the moment, any pointers on where to start?
High Sierra, boots through Clover fine, Apple symbol, progress bar updates, 3 monitors all go black, then where I would normally get the familiar sign in...
The groove the C-clip hooks into can catch on the two nylon washers as you push the pin out (into the case). Just waggling the pin sorts that out. The pin connects the rear catch to the plastic rail.
Just finger nail on one side and flat blade screwdriver on the other and push the C-Clip off the pin. I’ve done 3 and none very tight (it’s only a thin and small C-Clip). The grey rail just drops off once all fasteners are removed.
Normally your computer BIOS points at the drive/partition that then boots the operating system (Windows / macOS etc). In a Clover based Hackintosh Clover sits in-between the BIOS and the Operating System. So your BIOS needs to point at the partition that has Clover on it. Clover effectively...
100% do it. Especially as you have PCIe 3.0. I have PCIe 2.0 and get 1500+ MB/s Read/Write (Corsair Force MP510 SSD 960GB or thereabouts). It doesn't matter if your BIOS natively supports NVMe drives on the PCI bus or not, because Clover is your boot software then macOS is your operating system...
Very simple, but very good idea - that makes a lot of sense. Clover may not like the spaces and enclosing in quotes makes sure they are included. Good idea thanks.
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