Apple
iMac 27-inch (2019)
- Issue
- iMac extremely slow — taking 5 minutes to boot. Fusion Drive HDD component failing with reallocated sectors.
- Solution
- Removed failing Fusion Drive. Installed 1TB NVMe SSD via PCIe adapter. Cloned macOS Ventura with all data intact. Applied fresh thermal past...
Technician's note
SMART data showed 847 reallocated sectors on MQ01ABD100 HDD. New SSD benchmarks 2,800 MB/s read. Boot time now 12 seconds.
- iMac
- SSD Upgrade
- Fusion Drive



