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发布于 2012 年 6 月, 型号 A1278. Intel 处理器,支持 Turbo Boost, 最多 512 MB DDR5 显存

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SSD upgrade gone strangely, running Mojave OS dummy needs help!

Hello

Before I get started, please remember I am very new to PC/Laptop upgrades, I've only had experience replacing RAM and graphics cards before, never a hard drive. I also have mild learning difficulties so I need things explained simple stupid, or as clearly as possible please.

So today I went about cloning my mid 2012 macbook pro HDD to a 1tb SSD using disk utility, and running OS Mojave. It's an Samsung EVO SSD and stock HDD that came with the macbook from new.

I plugged in the SSD using a Sata to USB cable, formated the SSD for APFS, the same as the original HDD, and restored from the HDD to SSD using APFS. The process took several hours to complete. This was following a carefully selected YouTube video. An error message came up at the end. So, i shut down and rebooted in recovery mode and went to check everything was in order. The files did copy over regardless of the error message

On my HDD, I have 499.9GB capacity and 230.81 used.

But on my SSD, I have 1TB capacity and 450. 81GB used.

I'm a bit perplexed as to why this has happened and how, is it the way the SSD handles APFS files or something, was it an error? If I were to reformat the SSD and reclone would it affect read and write speeds? What's the next thing I need to do and how?

I tried to research into this as much as i could but I'm unsure what to do now. Any help would be appreciated. Thanks guys

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When you replace the cable that Nick said, install protection for it. The cable mainly gets damaged by the bottom case contact it right as it climbs onto the optical drive. Note in the photo the protection on either side that I’ve used. In this case it is 3Ms extreme mounting tape.

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so in my experince of cloning drives over the years at my shop here is the wisdom i can give you. If your getting errors there is usually two different things going on. The first thing would be your hard drive is bad that is your source disk. In your circumstance that would be your 1TB drive. Most of the time the smart sectors can be defective. The second thing it can be is the software used. Most cloning software sucks. i use acronis or macirum. Those are the two that are most reliable to me. Now what i would suggest to you. IS install your ssd. Load the newest mac os onto a flash drive. Install that os. When you are setting up the computer the mac migration assistant will ask if you have anything to transfer. You can connect your old 1tb hard drive through a docking station or sata to usb adapter. and the migration assistant can move programs and files. So its almost the same as cloning. The only catch with it, is the operating systems on both hard drives either need to be exact or only a few updates behind i believe. The migration assistant works fantastic.

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Did you replace the HD cable? They go bad on these regularly and only tend to show when an SSD is installed - because the cable cannot handle SSD speeds. It sounds like you didn’t change it and you only noticed after the fact.

Refer to this guide to change the cable and this answer for patch instructions to prevent future failures.

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I used a sata to usb 3.0 to transfer the data. The only time I touched the internal parts was when I did a ram upgrade a few weeks ago, and didn't touch the hard drive back then. So I need to replace the HD cable and try again?

I also consulted a friend and he said it might have seemed like it had done an image clone, as I have only 450GB file on the SSD.

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@maccer123 Cloning creates problems too - it no longer works! You need to reinstall nowadyas due to the recovery partition not transitioning to the replacement drive. It can also create other weird issues. Hopefully it's just the drive cable - otherwise that clone is no good.

You didn't change the HD cable, so it's still suspect. You can't trust the original cable on these unless you bought it used and the seller did it and has disclosed as such.

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Thankyou, I'll try it and see if it helps

完成的

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