Alsoft's Disk Warrior still can't rebuild APFS disks.

TRIM is the garbage collection process for SSDs. It is automatically enabled for Apple OEM SSDs and can be manually enabled for third party SSDs (except, it seems, the ones from OWC - I have them and they claim not to need it). You can also help the longevity of any SSD by leaving more empty space to make it easier to find places to write to as it does all read/write in blocks. If you do a search here, you'll find plenty of discussion on TRIM.

As for yours showing an arbitrary #9 out of 10 - it is surely wanting to find something to do to explain its existence..... Unless you have a major problem, I would not bother to run it.

I don't know what TRIM is.

TRIM is a way for the File System to tell the SSD that the blocks used by a just deleted file may be added to the SSD's garbage collection queue, and at the SSD's leisure, pre-cleaned so they are available for new writes.

TRIM increases the pool of available blocks the SSD can pre-clean for future writes, so that sustained writes of huge files will not need to wait for the SSD to do garbage collection in the middle of the write.

Me? I just use AWK.

Alfred Aho, Peter Weinberger, and Brian Kernighan? And if so, you have got to explain that statement. Even if it is not about the AWK scripting language you still need to explain that statement 🙂

No, I have not relation to Alsoft

My post never alluded to that.

I just don't trust any company that says, "look what we found. We can fix it for you for $$."

What I said is that I bet that if you try DiskWarrior, you will see that it finds and fixes many problems on any disk, including booting ones and Time Machine ones.

I have never had a drive that gave me any indication that anything was wrong, so I don't see any reason to pay for something that tells me something is wrong that cannot be detected in normal use.

If I don't sense any problems, and I run their program that tells me I have a wealth of problems and fixes them, how do I know those problems were problems and how do I see that it did any good?

As I've stated, my experience is I've never had a drive that needed any repair, short of the one that failed.

Quite simple. DiskWarrior reports no issues on disks that are OK, but finds and fixes problems on disks with them. A good disk will always generate no issue with DiskWarrior. Tested on thousands of Macs over the years. You do not have to purchase the application. Ask someone with it to try it. You will be surprised. Then purchase it if you want to use it.

As said, I have yet to check if that holds true for APFS disks (once DiskWarrior 6 supporting them is released), but it is certainly true for HFS+ ones. That is for sure.

I forgot to say that DiskWarrior is capable of fixing disk problems that no other utility can do because it uses a unique approach. Instead of trying to patch the directory as others do, which may --and indeed does-- create more and serious problems sometimes, making the situation even worse and eventually rendering the disk completely unusable with all data lost, it rebuilds its directory from scratch. That is why it is so critical to run DiskWarrior first.

A good disk will always generate no issue with DiskWarrior.

All of my disks have generated no issue without DiskWarrior.

Again, what am I supposed to see going wrong with my disk that would warrant repairing with DiskWarrior.

I guess it is all a moot point for me, though, as I have no HFS+ Macs.

You said:

"All of my disks have generated no issue without DiskWarrior.

Again, what am I supposed to see going wrong with my disk that would warrant repairing with DiskWarrior."

You never know until you try. A disk may have a corrupt directory, files may be lost and you may not know if you do not try to access such files amongst the millions that the disk may contain. The only way to know is checking disk directory integrity and all files in the disk. That is what DiskWarrior does in minutes.

Sure. No problem. But this is what experts like "Bob LeVitus" say:

Three Ways to Fix Mac Hard Disk Failures

https://www.macobserver.com/columns-opinions/dr-macs-rants-raves/three-ways-fix- mac-hard-disk-failures

I have owned Disk Warrior since version 3, and currently own v5. Increasingly, I have used it less and less.

Thanks for the edification on the availability issue.