Managing Multiple Partitions on a Mechanical HDD
Tampering with partitions on a 1TB mechanical hard drive in a 2015 iMac carries both performance and data risks.
Safety and Performance Guide:
- Performance Warning: Running macOS Sequoia on a mechanical HDD is extremely slow. With three partitions (Sequoia, Monterey, BootCamp), the disk head will be constantly moving, leading to severe lag.
- Partitioning Risk: Resizing partitions with Disk Utility is generally safe, but always have a full backup. A power failure during a resize will result in total data loss.
- The 'Better' Way: Instead of partitioning your slow HDD, buy an External SSD. Install Sequoia on the SSD via OCLP. This keeps your internal HDD safe and makes Sequoia run 10x faster.
Original Question: "macOS Sequoia Partition with Monterey and Boot Camp partition on iMac 17,1 (27' 2015L), how safe it is on a 1TB HDD?"
So im planning on transitioning from Monterey to Sequoia, but now, my fear would be with all the partitions and stuff, I have like 547GB free for Partition due to also having a Boot Camp Partition, does someone share this config to know how risky would be to tamper with partitions and the HDD on this model?
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