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With every move Apple makes in the past couple of years, they are bringing me closer and closer to the day when I completely leave the ecosystem, both for computers and smartphones.
Unfortunately it feels that way...
Things are getting a bit too convoluted fir my taste too.
But im still hanging in there.
 
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I installed the GM on my mac mini with a fusion drive, and then went into the recovery partition and upgraded it to APFS (I did this late last week, before this announcement).

So far as I can tell, it's working fine.

1. What could go wrong if I just leave it like this?

2. Are they just ironing out bugs and intend to turn this back on down the road?
 
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Anyone know if a hybrid Macbook Pro that has two internal drives (main boot is SSD in the optical drive bay with the original HDD serving as storage) will work with the new OS? Assuming the new OS will still read/write to HDD drives, just not in the new APFS. I am also guessing if you have older computers that continue to use the old system that can't upgrade you should not convert any of your computers to the new system as those files will become unreadable by the older systems.
 
Gonna be a bunch of people upset for no reason other than they don't get something others got. They have no idea the benefits this change brings but damned if they'll let that lack of knowledge stop them from complaining!
I was looking forward to the space savings on several Fusion Drive iMacs but now I guess I won't bother upgrading to High Sierra. I waited a year before upgrading to Sierra because of Java runtime conflicts with Adobe CS5. It's sad how easy it is to get along without upgrading to new MacOS but Apple can only blame themselves here.
 
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I was looking forward to the space savings on several Fusion Drive iMacs but now I guess I won't bother upgrading to High Sierra. I waited a year before upgrading to Sierra because of Java runtime conflicts with Adobe CS5. It's sad how easy it is to get along without upgrading to new MacOS but Apple can only blame themselves here.

Go for it bro. You aren't hurting anyone but yourself. You're acting like you not upgrading is in some way harming Apple.
 
What does this mean to me ?

I got iMac 2017 with traditional 1TB hard drive . Does new file system not work for that ? Will it make traditional hard drives any faster or smoother ? I don't understand
 
I don't get it ... I installed the GM on my iMac with 1TB Fusion Drive. It installed just fine. And it seems to run at the same speed it always had. What's the issue here? I'm not in front of the computer ATM to see if it's APFS converted or not.

I put the GM Candidate on my 3TB fusion iMac, and looking in about this Mac it says

MacintoshHD:



Available: 2 TB (1,996,762,079,232 bytes)

Capacity: 3.11 TB (3,114,866,704,384 bytes)

Mount Point: /

File System: Journaled HFS+

Writable: Yes
 
Some of the comments here just get me shaking my head.

Waahhhh! Waahhh! I want it now. I want it now.
{throws toys out of the pram}

Like most things that Apple does, it will get released when it is ready to be released.
Those of you decrying the apparent failure shoud just think of the gnashing of teeth, waling and moaning that would come from all sides if Apple released it and it was full of bugs?
This is the filesystem for heavens sakes. Mess that up and people lose data. That is not good.
I know how hard it is to create a totally solid Filesystem. I wrote one in the 1970's. Some of the bugs took a long time to discover and get rid of especially race conditions when I multi-threaded the controller.
Anyway, I wouldn't use the initial release anyway. That's just the old software developer in me talking.
 
Will it support a mini with two drives? I got a SSD OS X drive and a spinning drive for media storage ( iTunes ) ?
 
I put the GM Candidate on my 3TB fusion iMac, and looking in about this Mac it says

MacintoshHD:



Available: 2 TB (1,996,762,079,232 bytes)

Capacity: 3.11 TB (3,114,866,704,384 bytes)

Mount Point: /

File System: Journaled HFS+

Writable: Yes

Seems the issue is only if you were on a pre GM beta. Obviously if it's GM candidate, it's what they want to push to the masses, so if you waited for the GM to install, this story doesn't affect you, it wouldn't convert to APFS for you if on fusion, or EVERYONE with an iMac who installs the update will have to do the manual fix.
 
Oh man, I hope this is coming (soon!). I literally just bought a new iMac with a 2TB fusion drive and 32 megs (EDIT: gigs, oops!) of RAM on the premise that this was going to be a feature. I would have gone for an all-SSD internal drive and got the rest as an external drive if I'd have know...

Can you still return it? I just replaced my 3TB Fusion HDD portion in my iMac due to failure with an SSD and it's unbelievable how much faster the machine is overall.

There's no way I would do a fusion drive setup again, if you need large capacity storage an external HDD connected via usb3 or thunderbolt dock would be better.
 
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Woah. Came here to say that every iMac they currently sell in stores (non custom built orders) come with spinning or fusion drives. So when this comes out every floor model will not be taking advantage of the one huge speed boost they demo'd and are pitching as the main reason for High Sierra's existence.
 
Just read through the support document. Built in SSDs are covered, Fusion and regular HDDs are commented on - wondering on which side of the divine third-party SSDs might fall on. Late 2011 15” MBP here with a 1TB Samsung SSD replacing the original 750GB HDD.
 
In the past, we had issues with filesystems that weren't really very compatible with SSDs. (Yes, you could install something like Windows '95 on an SSD, but the filesystem had no provisions for "TRIM" support so it made the SSDs get very slow as you created and deleted files and folders with time.)

Sounds like this could involve something similar, where the new filesystem was coded with certain assumptions about handling either an SSD or a spinning HDD based on ID'ing the drive's type. And a Fusion setup involves both types working together. So proper support might take more custom coding to deal with that scenario, and Apple doesn't have that ready yet.

What kind of filesystem has requirements for the type of disk it runs on? Must just be an optimization thing.
 
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Woah. Came here to say that every iMac they currently sell in stores (non custom built orders) come with spinning or fusion drives. So when this comes out every floor model will not be taking advantage of the one huge speed boost they demo'd and are pitching as the main reason for High Sierra's existence.

They will, when it's ready, in the meantime they can take advantage of the main reasons for high sierra to exist, such as metal 2, external GPU, and the classic improvemente of every os x release.
 
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A question by someone not so technically inclined.

My 2011 iMac now has to SSD drives inside but I backup everything onto a traditional spinning drive.

Can I still backup onto a spinning drive or does my backup drive now have to be an SSD?
 
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