A local library in Bristol contacted Bristol Data Recovery after their MacBook with a Fusion Drive setup failed following a macOS update. The reported issues included:
- The MacBook had two drives in a Fusion Drive configuration – one for the operating system (SSD) and one for data (HDD).
- The macOS update failed, causing the system to enter a boot loop and preventing access to files.
- The Fusion Drive was no longer recognised, making the data drive inaccessible.
- The library’s database and archive records were stored on the drive, with no backup available.
Since Fusion Drives rely on Apple’s proprietary CoreStorage technology, specialised forensic techniques were required to reconstruct the data structure.
Our Expertise in MacBook Fusion Drive Recovery
With 25 years of experience, Bristol Data Recovery specialises in:
✔ Recovering data from MacBook Fusion Drives after macOS update failures
✔ Forensic reconstruction of Apple’s CoreStorage Fusion Drive structure
✔ Using advanced tools like Acelabs PC3000, DiskWarrior, and R-Studio for Mac
Diagnosis & Recovery Process
Upon receiving the MacBook Fusion Drive, our engineers conducted a detailed forensic assessment. The key findings included:
- The macOS update had corrupted the CoreStorage volume, breaking the link between the SSD and HDD.
- The SSD (operating system drive) was functioning but not bootable.
- The HDD (data drive) contained recoverable files, but the CoreStorage metadata was damaged.
To successfully recover the library’s database and archived records, we implemented a multi-step forensic MacBook Fusion Drive recovery strategy:
Step 1: Safe Drive Cloning & Data Imaging
- Used DeepSpar Disk Imager to create sector-by-sector forensic clones of both SSD and HDD.
- Applied bad sector handling techniques to prevent further data corruption.
Step 2: Fusion Drive Reconstruction & File System Repair
- Used Acelabs PC3000 Mac Edition to manually rebuild the CoreStorage volume.
- Restored file system metadata and directory structures to regain access to lost files.
Step 3: Data Extraction & Validation
- Extracted and validated all library database files, archived documents, and research materials.
- Manually verified file integrity and usability.
Step 4: Secure Data Transfer & Prevention Recommendations
- Conducted final validation checks to confirm all recovered files were intact.
- Successfully transferred the restored data to a secure external SSD, formatted for Mac compatibility.
- Provided guidance on Fusion Drive maintenance, macOS update precautions, and backup strategies.
The Result
We successfully recovered 99.2% of the library’s lost data, including:
✅ Library database records and archived research documents
✅ Operational files, financial records, and user transaction logs
✅ Digital books, PDFs, and historical records essential for library operations
The library was able to restore its digital records and continue providing access to its resources without data loss.
Why Choose Bristol Data Recovery for MacBook Fusion Drive Recovery?
✅ 25 Years of Expertise – Specialists in macOS data recovery and Fusion Drive repair.
✅ Forensic-Level CoreStorage Reconstruction – Restoring lost Mac volumes and files.
✅ Fast & Reliable Service – Trusted by educational institutions and businesses for 25 years.
If your MacBook Fusion Drive has failed after a macOS update and is stuck in a boot loop, contact Bristol Data Recovery today for expert Mac hard drive data recovery services!