How to Perform a Fresh Install of macOS Sequoia on iMac 2017 using OCLP
A clean installation of macOS Sequoia on a late 2017 iMac using OCLP can resolve speed issues and clean up system storage.
Step-by-Step Clean Install Process:
- Prepare a USB Drive: Plug in a 16GB+ USB drive. Open the latest OpenCore Legacy Patcher (v2.4.1 or newer).
- Download macOS: Select
Create macOS Installer, thenDownload macOS Installer, and choose macOS Sequoia. - Build OCLP: Once downloaded, flash it to the USB. Then, choose
Build and Install OpenCoreand target your USB drive. - Format Disk: Reboot, hold
Option, boot from the EFI Boot on USB, and select the macOS installer. Use Disk Utility to erase your internal SSD as APFS. - Install & Patch: Install macOS Sequoia. After setup, open OCLP on the iMac and apply the Post-Install Root Patches for graphics acceleration.
Original Question: "About fresh installing OCLP (2.4.1) MacOS Sequoia on iMac 2017"
My iMac has been running a little slow for a while now.
Even on the default 256 GB SSD.
Maybe it's time for a fresh install.
Any advice on how to go about it? Besides backing up my data.
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⚠️ WARNING:
Installing macOS Tahoe on unsupported hardware is NOT supported by the OpenCore Legacy Patcher developers. Please be aware that numerous users have attempted installation, often resulting in serious issues including hardware malfunctions and complete data loss.
Also understand that OCLP supports over 83 Mac models! Just because it "worked" on one, does not mean it will not cause major issues on your device.
NOTE: You might have seen a new piece of software called OCLP-Mod. The OCLP developers do NOT recommend using any modification of the genuine OCLP software. Keep in mind, anyone is able to make a fork of OCLP (a fork is a modification of the original project). No other software is checked and verified safe or actually working on all 83 Mac models.
In closing, please only use the genuine version of OCLP. Do not install Tahoe until a fully compatible public version of OCLP is released. Thanks!
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