Thanks in advance for any and all help. My MacBook Air has come to a crawl because the kernel_task is running at 100%+. I have researched this issue extensively and have decided on following the guide listed here (https://grafxflow.co.uk/blog/mac-os-x/delete-ioplatformpluginfamilykext-macos-big-sur) and accept the risks. The only issue is I can’t get past step 3. In particular this step:
Next make it writable which will require you to enter your password – the /Volumes/Macintosh HD 1 could be different.
sudo mount -uw /Volumes/Macintosh HD 1
When I enter that command I get the following error. “unknown special file or file system”
FYI when Diskutil list shows this in case I picking the wrong disk in previous step
diskutil mount disk1s5
/dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *500.3 GB disk0 1: EFI EFI 209.7 MB disk0s1 2: Apple_APFS Container disk1 500.1 GB disk0s2 /dev/disk1 (synthesized): #: TYPE NAME SIZE IDENTIFIER 0: APFS Container Scheme - +500.1 GB disk1 Physical Store disk0s2 1: APFS Volume HD - Data 152.9 GB disk1s1 2: APFS Volume Preboot 282.2 MB disk1s2 3: APFS Volume Recovery 622.1 MB disk1s3 4: APFS Volume VM 1.1 GB disk1s4 5: APFS Volume HD 15.3 GB disk1s5 6: APFS Snapshot com.apple.os.update-... 15.3 GB disk1s5s1