Can I upgrade my 128 GB drive to 512 GB?
What SSD do I have in this system?
Which type of drive is best for this system?
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Hi!
Yes, you can upgrade the current 128 GB SSD to a larger one. You will need to back up your data and also get an enclosure to make the transfer easier afterwards [*]. Here’s what you’ll need:
There are other models of drives that you can use, but you need to make sure that they are compatible with Apple MacBooks.
[*] There are a few different ways you can do this:
First create an OS installer thumb drive following this guide: How to create a bootable macOS High Sierra installer drive This will allow you to install a fresh OS on the new drive.
As far as your data you could reuse your old SSD using the special case you can get with either SSD supplier or just make a full backup onto an external drive using TimeMachine then restore onto your new drive.
[from @danj ‘s post Can I upgrade my new MacBook Air 2017 from 128gb to 256 gb ssd]
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Here's a good reference on the Apple SSD's The Ultimate Guide to Apple’s Proprietary SSDs
If you use a disk mirroring application, which is ready available for free, you can mirror the disk sector by sector. Apple is essentially a UNIX OS.
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SSD's don't have sectors they are block based. Mirroring is not needed here just a straight migration either via TimeMachine or if you have access to the needed case for the old blade SSD via it.
