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So, I am happy to report that I finally got to the bottom of my (major) issue(s)! I needed the two Catalina ICH10 patches linked above and an appleAHCI patch (search Mojave 10.14.4 SATA Hot-Plug not working). These have fixed my freezing and HDD issues, and my system runs well on my SSD. A huge...

Ok, I was able to boot into the problem system with -x and did permissions/cache from there. This has recovered my system! Thanks for the help (though I still couldn't find how to do it in Catalina through the Recovery disk.

"sudo" command is not recognized. When running "kextcache -i /" from my Catalina recovery drive i get errors: failed to create cache folder... Error 107 rebuilding... Error pruning staging area - no such file... I installed these kexts to the system drive because the threads referencing them...

I used Kext Wizard to run Repair Permissions and Rebuild Cache, but it didn't fix the KP. To be clear, I am able to boot my High Sierra, and am trying to fix my Catalina drive. I did change the target drive to the Catalina drive, but still KP.

Thanks for the information, which is what I expect I was missing. I tried repairing permissions, and then booting with -f. I'll have to look into the kext cache rebuild (I thought -f did this). I presume I can perform all of this on my Catalina HD, while booted into High Sierra HD? When I...

I have been working to get AHCI working on my Catalina installation. I tried installing AppleAHCIPort.kext to \L\E\ and then tried SATA-unsupported.kext to \S\L\E\ as recommended in several posts. I used KextBeast to install them. I also added some AHCI patches along with the kexts. The...

Long story short: - High Sierra seemed to work without freezes for a while. - I started installing a few software; security, online backup. - I started cloning data to my externals to update my backups. - I eventually 'broke' the High Sierra installation. It started freezing when pushing the...

As mentioned in my HDD -50 thread, I have reverted to High Sierra installed on my older SSD for testing. It is running without freezes. This system initially experienced a 30-min freeze that I was eventually able to track to 'put HDD to sleep when possible'. Disabling this fixed that issue, and...

I did empty one of the two problem drives and reformat it in Catalina. This did not fix the issue. The newly formatted drive experienced the same issue. I then emptied the other drive too, and removed both drives from my case and installed them into a USB enclosure. They appear to work there. I...

Formatted GUID with 3 HFS+ partitions. It was originally formatted/created in Yosemite or (probably) earlier. Partitions: Personal Files My Library (extended personal files) iTunes Not using Paragon NTFS or any other drive-related programs or utilities.

I just swapped back to my old SSD w/ High Sierra (clean install without many apps or settings). I've been running for an hour, and error -50 has not occurred on the HDD that typically does. Currently, this is booted with a slightly different Clover EFI. And, an hour is not THAT long. But I do...

I agree, it seems to have a pattern (now, though in the past it was not as regular/obvious). Sometimes it happens almost immediately after logging in too. System-wide power settings: Currently in use: hibernatemode 0 sleep 0 (sleep prevented by mds, UserEventAgent...

I was under the impression that I should be keeping Clover up-to-date (even when running older Catalina) for compatibility with kexts, etc. Using one of the Legacy Clover builds from TonyMac is the only way I got a working USB stick (with Clover installed in \EFI\ folder on root, not in EFI...

Unfortunately, both of those settings are already disabled. My settings don't have a Power Nap option. Is that due to my SMBIOS? Also, when I boot, my new internal HDD (that generally works) sometimes has a warning that "this drive has not been initialized" and I cannot access it. Rebooting...

The problem drives are similar (identical?) HGST 4TB drives. I was also able to copy data for several hours from the internal drive to the USB dock drive. Keeping the internal drive busy prevented the error -50/read-only from occurring for that time. Within 30 minutes of inactivity, the internal...

While I agree that I have not conclusively demonstrated the SSDs are not at fault, I have several reasons to believe they are unlikely to be the issue. - My old SSD ran Yosemite without issue. I successfully installed and ran Catalina on a non-SSD. I cloned this working system to the SSD and it...

Thanks for the interesting discussion. I am in the position of trying to get my non-supported Sandy Bridge hardware working on Catalina (experiencing random freezes that I have been unable to resolve), and have been planning to upgrade something in the near future (assuming - worst case, I...

Does anybody have any idea how much longer Hackintoshing will be possible? If I was to buy the newest compatible hardware today, for how long would I (likely) be able to keep it updated to the latest Mac OS?

I have an older 120 GB SSD that was experiencing freezes. I bought a new 500 GB SSD that is now experiencing freezes. I think that demonstrates the drives themselves are ok. I actually have a PCIe adapater with an old Macbook Air SSD in it. My understanding is that I could not use it as a boot...

Thanks for the detailed troubleshooting tips. It is worth restating that my system ran Catalina without freezes when using a non-SSD. It did, however, experience poor performance, hangs and beachballs.