Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Do Not Enter Sign - Mac OS Sierra Restored to Mavericks - Lost 3TB Fusion Drive

All right, I have to admit, this is the first hard drive/major issue I have experienced in 11 years of owning a mac.


I have a late 2013 27" iMac. Everything was fine until two weeks ago when I came down and it was powered off. I thought that was weird because I left it on and we never lost power. I turned it on and I had the "do not enter" sign appear. I have searched high and low and tried various things. At first I did the command + r trick and tried selecting a time machine backup - luckily I have many backups available to choose from but it failed. I was on the most current version 10.12.5.


So through trying various things, finally this evening I was able to restore back to Mavericks. Of course it formatted things and I have no files, but I now have no 3TB fusion drive access either. It seems as if I only have about 120GB worth of drive.


Please advise.... I have no idea where to go from here. Thank you kindly.


Jeff

iMac (27-inch, Late 2013), macOS Sierra (10.12.5)

Posted on Jun 21, 2017 6:16 PM

Reply
Question marked as Top-ranking reply

Posted on Sep 27, 2017 12:53 AM

So, my retirement present to myself, 3 years ago, my late 2013 iMac did not prove to have as much longevity and be as easily upgradeable as I had hoped.

Before installing the official Final non-Beta version of High Sierra on my late 2013 iMac's Fusion drive, I had converted my drive back to HFS+, as per Apple's instructions for Fusion drives.



I then downloaded the HSierra install from Appstore and attempted to install it. Notably, I saw NO WARNINGS about the incompatibility with 3Tb Fusion Drives.


I spent around 8 hours attempting to install unsuccessfully, and having the machine crash, and not able to revert to the beta. I just could not get my machine to work. I used internet recovery, USB OS Installs, everything that I knew of.


On several occasions I got the NO ENTRY sign on my screen. On ONE occasion I got an Apple Support 1007F error message.


So even though I followed Apple's instructions about converting my drive BACK to HFS+, High Sierra still won't install.


Turns out that there is a recognized issue with High Sierra on 3Tb drives, even when converted back to HFS+.


There is nothing much that I can find specifically about this 3Tb Fusion anomaly on Apple pages, just on other forums.


Luckily, eventually, I managed to reinstall 'LOW' Sierra on my iMac. And it's going to have to stay like that for a while.


I have had enough of the crashes that my machine is subject to when attempting to install High Sierra.


I am SO angry that the 3Tb drive issue does not allow High Sierra to run.


In order to stop thinking about the Sierras, I have adopted a beautiful image of the Adirondacks for my desktop background. So as far as I'm concerned, Apple, until you solve this 3Tb anomaly, I'm running OSX Adirondacks as a protest.


GRRRR!!!!



I hope Apple comes up with something soon.


User uploaded file

5 replies
Sort By: 
Question marked as Top-ranking reply

Sep 27, 2017 12:53 AM in response to SoaringUSAEagle

So, my retirement present to myself, 3 years ago, my late 2013 iMac did not prove to have as much longevity and be as easily upgradeable as I had hoped.

Before installing the official Final non-Beta version of High Sierra on my late 2013 iMac's Fusion drive, I had converted my drive back to HFS+, as per Apple's instructions for Fusion drives.



I then downloaded the HSierra install from Appstore and attempted to install it. Notably, I saw NO WARNINGS about the incompatibility with 3Tb Fusion Drives.


I spent around 8 hours attempting to install unsuccessfully, and having the machine crash, and not able to revert to the beta. I just could not get my machine to work. I used internet recovery, USB OS Installs, everything that I knew of.


On several occasions I got the NO ENTRY sign on my screen. On ONE occasion I got an Apple Support 1007F error message.


So even though I followed Apple's instructions about converting my drive BACK to HFS+, High Sierra still won't install.


Turns out that there is a recognized issue with High Sierra on 3Tb drives, even when converted back to HFS+.


There is nothing much that I can find specifically about this 3Tb Fusion anomaly on Apple pages, just on other forums.


Luckily, eventually, I managed to reinstall 'LOW' Sierra on my iMac. And it's going to have to stay like that for a while.


I have had enough of the crashes that my machine is subject to when attempting to install High Sierra.


I am SO angry that the 3Tb drive issue does not allow High Sierra to run.


In order to stop thinking about the Sierras, I have adopted a beautiful image of the Adirondacks for my desktop background. So as far as I'm concerned, Apple, until you solve this 3Tb anomaly, I'm running OSX Adirondacks as a protest.


GRRRR!!!!



I hope Apple comes up with something soon.


User uploaded file

Reply

Jun 22, 2017 8:54 AM in response to SoaringUSAEagle

Hello SoaringUSAEagle,

Thank you for using Apple Support Communities. It's my understanding that after receiving a prohibitory symbol on your Mac, you've been able to restore back to Mavericks but only have 120GB drive space. You've done a great job so far. I am happy to help.

First, if you are having issues with the volume structure on your Fusion drive, you may want to try the troubleshooting steps in the link below:

Mac mini (Late 2012 and later), iMac (Late 2012 and later): About Fusion Drive - Apple Support



If the issue persists, run Apple Diagnostics to test for possible hardware issues:
How to use Apple Diagnostics on your Mac


Have a wonderful day!
Reply

Sep 27, 2017 10:23 AM in response to vintageaxeman

Apple doesn’t routinely monitor the discussions. These are mostly user to user discussions.


Send Apple feedback. They won't answer, but at least will know there is a problem or a suggestion for change. If enough people send feedback, it may get the problem/suggested change solved sooner.


Click here to send Feedback

Reply

Jun 22, 2017 9:26 AM in response to JovonaP.

I did make some head way. I was able to get Sierra 10.12.5 installed.


However, I am still having volume structure issues. I only see one 120GB drive. I do not see any other drives listed in the disk utility option, nor a Recovery HD option when selecting cmd r when I reboot. I've researched and found a blog that goes through the steps to relink the fusion drive but that did not work as I don't see the disk UUID's.


What do you recommend? I appreciate your assistance.

Reply

Jun 26, 2017 7:21 AM in response to SoaringUSAEagle

I ended up taking the iMac into our local Simply Mac for a diagnostic. Luckily I have AppleCare protection on it - less than 2 weeks until it expires so I am thankful I am covered right now.


They pulled the drive out and deemed it fried after putting it on a tester and it wasn't showing up. So here's to a new hard drive. Thank you for your assistance in this matter.

Reply

Do Not Enter Sign - Mac OS Sierra Restored to Mavericks - Lost 3TB Fusion Drive

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.