Home > Questions

iMac boots to a circle with a line through it 🚫

I need help to get my iMac up and running. I have a fusion iMac from 2015 with one 128GB SSD and one 3 TB hard drive. When I boot it up, it shows a circle with a line through it and it says support.apple.com/mac/startup. I went into Recovery mode to reinstall macOS but failed because there is no disk available. When checking my internal drive in Disk Utility, I see two drives: an SSD and an uninitialized HDD. I tried to mount the hard drive to no avail. What should I do to reinstall macOS Big Sur?

Best Answered by

iBoysoft author Jenny Zeng

Jenny Zeng

Answered on Friday, June 14, 2024

The problem lies in your Fusion Drive. Based on Disk Utility, your Fusion Drive has been split into two drives. To make it work, you need to recreate the Fusion Drive.

(The prohibitory symbol on your Mac signifies that your Mac doesn't have a working operating system. You're correct that you need to reinstall macOS. But because your Fusion Drive has been split into separate volumes, your Mac can't find a disk to carry on the installation.)

The process of recreating Fusion Drive involves drive formatting, which will delete all data on your Mac. So, I recommend you get back the data that matters to you from your Mac before proceeding.

Since your Mac can't boot up, you can't simply copy and paste the files off it but need a professional data recovery tool that's able to retrieve data from an unbootable Mac. iBoysoft Data Recovery for Mac is exactly what you need.

Unlike other data recovery software, which requires you to create a bootable installer to recover data, it enables you to restore data on your Mac from Recovery Mode

It supports various file types, such as images, videos, audio, documents, emails, etc., and is compatible with all types of Macs, including Intel-based, T2, M1, and M2 Macs running Mac OS X 10.11 El Capitan and later.

Besides, it allows you to preview files on your Mac for free. Check the steps in the following guide to get your data back from the unbootable Mac.

• Recover Data From Unbootable Mac in macOS Recovery Mode

After your data is secured, you can follow the steps in Solution 6 of the guide below to rebuild the Fusion Drive.

• No Disk to Install OS X or macOS? Fix Disk Not Showing Up


People Also Ask

Read More Questions

Read More Advice From iBoysoft's Computer Experts

macOS 14 Sonoma

O que fazer antes de atualizar para o macOS 14 Sonoma?

Aqui estão as coisas que você precisa saber antes de atualizar para o macOS Sonoma. Leia-as para saber se você deve atualizar para o macOS Sonoma e como evitar problemas comuns.

Fehler 'Nicht genügend Speicherplatz zum Kopieren auf dem Mac'

Fehler: Nicht genügend Speicherplatz zum Kopieren auf Mac (USB)? Behoben

Beheben Sie Fehler wie 'Not enough disk space to copy' auf dem Mac & 'The item can't be copied because there isn't enough free space.' auf dem Mac. Verstehen Sie, warum der Mac sagt, dass nicht genügend Platz vorhanden ist, wenn das der Fall ist.

Wie man macOS Sonoma sauber installiert

Wie installiert man macOS Sonoma sauber mit oder ohne USB-Stick?

Lesen Sie dieses Tutorial, um zu erfahren, wie Sie macOS Sonoma sauber auf Ihrem M1/M2/T2/Intel Mac installieren. Eine saubere Neuinstallation von Sonoma hilft, Unordnung auf Ihrem Mac zu beseitigen.