Hi everyone,
I’m trying to install macOS Sonoma or Ventura on my MacBook Pro 13" Early 2011 (MacBookPro8,1) using OpenCore Legacy Patcher (v2.4.1).
When the laptop still had its original HDD and 4 GB RAM, Sonoma installed and ran successfully.
After upgrading the hardware to 16 GB DDR3-1333 (2×8 GB) and a new 256 GB SATA III SSD, the installation now consistently fails.
Every attempt to install Sonoma or Ventura stops at around “14 minutes remaining” with the following error message:
"An error occurred while loading the update" After the error, the SSD disappears from Disk Utility until I reboot. Once rebooted, it shows up again as normal.
Here’s what I’ve confirmed:
- Booting through EFI Boot (OCLP)
- SSD formatted as APFS, GUID Partition Map
- System date and time are correct
- The USB installer was freshly created and verified on another Mac
- The same USB installer successfully installs macOS on a different drive
- Both Sonoma and Ventura fail in the exact same way
I would appreciate any advice on what might cause the installer to fail at this stage, or if there are specific OCLP-related troubleshooting steps or logs I should check.
Thank you in advance for any help or suggestions.
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