Free for apple instal BuhoCleaner1/1/2024 ![]() However, the report does not indicate to me your Fusion system is broken. You should see about 500MB/sec write speeds. However, the write speed is slower than nominals. Alone the 5400 can do no better than 75-80MB/sec. You actually have an Apple Fusion drive, a small SSD software-linked to a conventional mech hard drive, so your realtime scores are much faster the the 5400 rpm drives alone. Option 3 is if the HD is failing to pay to have it replaced, this would be very expensive however please let your Apple Authorized Service Provider quote the costs involved. If I were in your shoes, I'd seriously consider replacing the computer rather than investing time and money in old technology. The second option is to buy an external USB 2 SSD and use that as your startup drive, this will improve the performance quit a bit but you will still be left with a 8 year old machine. ![]() You have some options though, considering the computers age (now almost 8 years old) you may want to consider upgrading to a new 24" iMac, all them are dramatically faster than your current machine. If ANY errors are found that means the drive is failing. To test if the drive is is failing download the free version of DriveDX and run it. However if the HD is failing then it would need to be replaced. You would need to take the computer to your local Apple Authorized Service Provider to have it diagnosed and if the drive is unfused, ask them to re-fuse it. It appears you have a Fusion Drive however I cannot tell if the Fusion Drive has become unfused. The HD you are using is the bottleneck on the computer's performance. However to address your problem, you have a base model 21.5" iMac with a glacially slow 5400 RPM internal HD. ![]() This tool lets you flash clean your Mac to remove various junk data, completely uninstall apps without leftovers, find and delete large or duplicate files, disable startup items, free up RAM, analyze disk space, flush DNS on Mac, and more.ĭownload and install BuhoCleaner on your Mac computer and use it to boost your Mac’s performance now.Your computer has some problems, please turn Mac OS's security settings back on. Improve Mac’s Performance with BuhoCleanerīuhoCleaner is a professional Mac cleaner application that aims to make your Mac run at the best performance. Optimize the system and improve performance.Intend to sell your Mac or transfer to a new Mac. ![]() Severe disk issues that can’t be fixed, e.g., repeated crashes or freezing, severe data corruption, etc.Here are some scenarios where you might need to format your Mac's startup disk. When Need to Format Mac Startup Diskįormatting Mac startup disk is a serious step that should only be taken in specific situations. If you have made a backup for your Mac with Mac Time Machine or other methods, you may restore your important data. If you plan to reinstall macOS from another disk, make sure to have a macOS bootable USB installer or another startup disk available. Select the “Reinstall macOS” option to follow the on-screen instructions to reinstall macOS on the disk. Click the Erase button to proceed with formatting the Macintosh HD disk.Īfter your Mac startup disk is formatted, you can exit Disk Utility and go back to the macOS Recovery window.Select the APFS format for the disk and choose the GUID Partition Map scheme.Click the Erase button at the top toolbar of Disk Utility.In Disk Utility, select your Mac startup disk from the left panel, usually named Macintosh HD or similar.Select Disk Utility in Mac Recovery Mode and click Continue to boot your Mac into Disk Utility. Click Options > Continue to access the macOS Recovery window. Intel processor Mac: Press the Power button to turn on your Mac and immediately press and hold the Command + R keys simultaneously.Īpple M1/M1 Mac: press and hold the Power button until you get to the startup options screen. Before proceeding, make sure to back up all important data on your Mac to an external storage device or a cloud service. To format your Mac startup disk, follow the steps below.įormatting the Mac startup disk will erase all data on the disk, including the Mac operating system and all your files. Also Read: How to Change Startup Disk on Mac (Sonoma/Ventura) How to Format Mac Startup Disk – 6 Steps
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