I'm struggling with my 2019 iMac (3.6GHz Intel Core i3, 8GB RAM) since it's become extremely slow. Booting up takes around 15 minutes, and even basic tasks like checking storage info take ages. I did restart it in Safe mode, which is slightly better, but it's still very sluggish. My current OS is Sequoia 15.4, and Apple Support mentioned I can't upgrade further. I've heard about resetting SMC and NVRAM, but I'd like to back up my data first. What's the best way to back up my data without risking corruption—should I use iCloud, a thumb drive, or something else? I thought it was backing up to iCloud, but I might have turned that off. Any advice on both speeding it up and backing up safely would be appreciated!
4 Answers
Backing up to a thumb drive might be too slow, especially with your iMac's current performance. An external USB or Thunderbolt drive would be much better. Time Machine is the way to go for a complete backup, and it minimizes strain on that slow system. Just connect an external drive, let macOS handle the backup process, and you can actually use your Mac later on while it works.
For backing up, seriously consider using an external hard drive with Time Machine. It'll be way faster than iCloud on your sluggish iMac and will back up everything: system settings, apps, files, you name it. Plus, it's built into macOS, so no extra software needed! Just plug in the drive, let macOS guide you through it, and you’ll be set. Look for an SSD if you want the fastest option—but really, use whatever external drive you have for now!
You definitely want to switch to an SSD if possible, or at least use an external SSD. You can copy your system over to it and boot from there, which should really speed things up. If you’re not comfortable doing this yourself, look into getting it done at a shop. Also, remember that if the HDD is starting to fail, you should back up ASAP. For backup methods, stick with an external SSD and Time Machine for the best results!
First off, did you get the standard 1 TB HDD? Those can be pretty slow! For backups, I'd recommend getting an external hard drive to set up Time Machine—it's the most reliable way to keep everything safe. Also, if you're running on an HDD, it's worth considering an SSD upgrade for a major speed boost. If you went with a Fusion Drive, there might be an issue with the SSD part failing. What's key now is to get your data backed up first—don't worry, resetting SMC or NVRAM won't harm your data. Just focus on that backup!
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