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HDD not found

My 27" iMac 2012 running Mojave (I think...) can't get past the Apple logo screen during boot up. Usually it stops when the progress bar reaches 100%, but sometimes also a tad past halfway. Tried first Cmd-R but ended up on internet download. At last I got to the macOS utility window and tried to restore from backup (timemachine) and then reinstall macOS. None worked, as no disk to install the restore/reinstall was found. Opened the Disk Utility and got this:



As you may see, the HDD is not found at all. Just the SDD part of my fusion drive. (Please notice that it claims the entire drive is unformatted. Not sure it matters, but anyway...)


Can anyone help med with what I have to do in order to make the system register the HDD or to make sure the HDD is actually working?




Sidenote: I don't know if it has anything to do with my issue, but I tried the following on the SSD as well:


I tried the First Aid button and got this report:



In the heading, it says (in Norwegian) that First Aid found something that needed repairs.


After that, I tried the restore button, and got this report:




iMac Line (2012 and Later)

Posted on Feb 3, 2020 1:30 AM

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Question marked as Top-ranking reply

Posted on Feb 4, 2020 3:04 AM

That's ok, we see just a 1/2 part of Fusion (the SSD).

IMO, the reason is the physical faulty HDD part. If you replace it then fix the split Fusion Drive like I told you previously, you'll be back on track. Just don't forget to restore the data from the backup :)

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10 replies

Feb 3, 2020 4:08 AM in response to Torstein77

Jeg kan se at du har nogle problemer med at finde din opstarts disk på din 2012 iMac?

Dette her er jo noget kryptisk at finde ud af så derfor skriver jeg på Dansk og ikke på Engelsk!

Tror du skal spørge på et Norsk Mac Forum på Nettet om dette her,da det kan være lettere på ens eget sprog end på engelsk!

Det Danske Macnyt.dk er osse en god mulighed at bruge,til dit problem?


Jeg vil nødigt "kloge" mig for meget om dette her men med det du skriver at den ikke kan finde din HDD i Diskvertøj er vel fordi, den står på SSD?

Flyt musen ned på "MacOS Base System" da det er maskinens HDD.

Hvis du vil bruge SSD´en som Start disk skal den Formateres mener jeg,da man jo osse Formaterer når man opretter en Time Machine Kopi!

Om du kører Mojave på din iMac? Kør op med Curseren til Æblet i venstre hjørne "Om denne Mac"

Håber at du finder en løsning på dit problem!

HDD not found

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