iMac M1 Monterey running slowly.

[MacInWin]

Probably not much, John. FV is ON by default these days, so when you went through the setup on the new machine you probably missed the very much understated offer to turn it off. If you want it on, no problem. Most of us who are not spies for some country or the Mafia don't bother with FV. You CAN turn it off, but it will take hours, if not days, for it to decrypt your 750GB of data on that drive. And note the nice, friendly, warning in the panel: "If you forget both your password and the recovery key, the data will be lost." Nice, eh?

 

[chscag]

I have multiple drives, both SSD and rotating, that are APFS and not case sensitive. But my TM target drive was changed and not by me. I read online that TM makes the change automatically. I have no idea why.

It appears not only with Time Machine but even when formatting a fresh external SSD. I tested this several times and each time the format was case sensitive and would not allow me to change it even after erasing the drive and starting over. I did not test with a rotating drive.

 

[MacInWin]

Curious, Charlie. I may experiment a bit, but as recently as last week a fresh external formatted just to APFS and not Case-Sensitive for me. Did 12.1 change something?

Edited to get the right version number for Monterey.

 

[MacInWin]

Did a quick experiment. 960GB SSD from OWC. Repartitioned, formatted, and got APFS (not Case Sensitive). Here is the Get Info:



And this from System Information/Storage:


Don't know what to say Charlie. Could it be something in your system defaulting to Case Sensitive?

 

[chscag]

Thanks. I'm going to test again with a spinner drive and a new SSD. Will let you know.

 

[chscag]

Okay, just finished testing with several blank T5 SSD portable drives.

When formatting a T5 for everyday use, the format is APFS (no case sensitive).

However, when assigning that same T5 to Time Machine usage, Time Machine then prepares the drive and it becomes APFS, case sensitive.

So, you are correct Jake. It is strange that Time Machine does that but there must be a reason.

I didn't test with a spinner as I didn't feel like digging one out from my "device shelf" but I suspect it would yield the same result.

Charlie

 

[MacInWin]

That's good, Charlie. I don't know why TM does what it does, but as you said, there must be a reason for the forced change. I don't have a spinner free to test with either, but I suspect it would end up the same.

 

[IWT]

@ian:

I don't believe Disk Utility will allow an APFS format without adding case sensitive. At least that has been my experience. John got into a bit of trouble not because of the case sensitive part of the format but rather because he chose encryption.

Charlie

I discovered that on another thread. Thanks Charlie for your gentle reminder. Much appreciated.

Ian

 

[pm-r]

That's good, Charlie. I don't know why TM does what it does, but as you said, there must be a reason for the forced change.

You might be interested in this and what he has to say about some of this:

Although you can present Time Machine with an empty container and it will create its own backup volume, you can also make its life a little easier by creating and naming an APFS volume for it. You can opt for APFS (Case-sensitive) unencrypted or encrypted, as you prefer. Backing up your encrypted Data volume to an unencrypted backup store will always elicit a warning notification, but TMA is quite happy to do that if you prefer. TMA backup stores always use the case-sensitive variant of APFS, though.

Time Machine to APFS: First full backup

The first full backup is performed as a manual backup, and largely occurs in file-by-file copying from source to the backup store. It is more efficient than to HFS+, but differences could be less t…

eclecticlight.co

- Patrick
=======

 

[MacInWin]

That is where I read it, Patrick. Thanks for posting it.

 

[chscag]

Thanks Patrick, that helps.

 

[Jonzjob]

This is looking at the 'About this Mac - System Report - Storage' and there is no encription shown on it




And I am sure that when I erased and formatted the T M SSD it was just APFS, but



The dammed thing seems to be a law unto its own! I did not select case sensitive!

I have turned off the auto TM selection and I will just have to remember to get it done regularly. First time for everything, me remembering anything that is ?

 

[chscag]

The dammed thing seems to be a law unto its own! I did not select case sensitive!

John:

You should know better than trying to do battle with the computer gods. The more you mess with them, the more they will be out to get you.

Try one of these:

 

[MacInWin]

As we have found, John, TM changes the target drive to Case Sensitive. As for FIle Vault and encryption, your image in post #120 (wow, that's a lot of posts for one thread) shows that File Vault is ON for the internal storage. That means it is encrypted. So, having FV ON (encrypted) and encryption OFF on the TM drive is what is triggering that particular message. No harm in that, but if you are encrypted on the internal drive for a reason (and not just because it's the default and you missed where to turn it off), then you may want the backup to be encrypted as well because if you do not, and if a nefarious individual gets that drive, they can read what is there easily. On the other hand, if you just missed that encryption was on (FV defaulted to it), you can leave the backup unencrypted. You can even turn FV off on the internal drive if you want to, but it will take, as I said, some time to decrypt all of that data.

But you can also leave everything just as it is. No hammer needed.

 

[Jonzjob]

I must have taken it as read/normal on the installation Jake and didn't change it. As far as I am aware there's no real sensitive info on there unless SWMBO is a spy for somewhere I don't know about???

And Jake! That has to be a calibrated knockometer that Chas has pictured there. He would not ever show something as crude as an 'ammer. I have several of them ranging from 2 oz to 14 lbs, including the specialist version that Chas has shown with the feature on the back for removing the backs of watches. That's technically know as the claw.

The shape of the head and handle would indicate that it's an Imperial one rather than metric too.

Some folk just don't know do they Chas?

 

[MacInWin]

True story, John. I was a U.S. Navy bombardier/navigator in an airplane known as the A-6 Intruder. In the original version of the airplane (the A-6A) the computer I operated was run on a tuning fork for a clock (and a rotating drum storage system). Periodically the catapult launch would cause the tuning fork to get stuck and stop vibrating. No computer! So, all of us knew where on the computer case to apply a judicious "tap" with a flashlight to dislodge the stuck forks to get the machine going again. The standard issue "L" shaped flashlight worked very well as the knockometer. Used it lots of times!

And the impact of a catapult launch on rotating drum storage has to be seen to be appreciated!

 

[pm-r]

But you can also leave everything just as it is. No hammer needed.

Interesting what one can find with a quick google search, but it seems that time machine has been switching case sensitivity on the TM backup drive for a good eight years now...

Why TimeMachine defaults to case sensitive?

Why TimeMachine defaults to case sensitive?

I've just had some problems with a disk that was formatted with HFS+ case sensitive while every else by Apple was non case sensitive. After a long time moving things away from my biggest disk,

apple.stackexchange.com

- Patrick
=======

 

[Jonzjob]

We too used those torches in the R.A.F. they were quite tough and sometimes doubled for knockometers for us too.

I have to admit that I have never understood why anyone would become aircrew on an aircraft that took off from an airfield that would run and try to hide as soon as soon as you were out of site! And then to compound sit in one and then trust someone else to put the aircraft back down, once you found the boat that not only trying to hide from you but was probably as stable as a bucking bronco!

I always worked on the old principle that birds and fools fly for a living and few birds fly at night

 

[pm-r]

The standard issue "L" shaped flashlight worked very well as the knockometer. Used it lots of times!

And the impact of a catapult launch on rotating drum storage has to be seen to be appreciated!

And I was always taught that one could not bend light and it always had to go only in a straight line...

Now why did my mind suddenly start thinking of large rubber mallets and the stiction that one often suffered on the classic Macs???




PS: I have always wondered how pilots and their crew withstood the G force of those catapults.
I must be almost akin to being hit by a big truck going 50mph+!!!


- Patrick
=======

 

[MacInWin]

Well, the catapult was only about 3-4G. Basically 0 to 130 in about 250 feet (the distance varies from ship to ship). Add 20-30 kts of wind and you had minimum flying speed.

Ditto for landing. 140 to 0 in a couple of hundred feet. Harder to take because it was from back to front, so you got pitched forward into the straps of the seat instead of being pressed into the seat back. Either way, it only lasted a couple of seconds, so not that bad. You get used to it.

The good thing about the A-6 was you sat side-by-side so if the pilot was being stupid, you could just whack him with the attitude adjuster you used to restart the tuning fork. It was a multipurpose tool!

If you want to see what it's all about, here is a short video.

Deck ops (launch, land) start about the 5 minute point. Some airborne video there, too. Couple of launches, landings from the cockpit point of view. Toward the end is just having some fun!