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Applicable for macOS Big Sur and Catalinaįree Download Why Mac Stuck on Login Screen after Update?.5 recovery modes for different situations.Get back files from mac internal and external hard drive (SD, USB, etc.).
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Support recovering data in 200+ formats (audio, video, image, docs, etc.).Recover files missing or lost due to system upgrade/downgrade,etc.If you're following the technique I've outlined, it's wise to try booting from the new external SSD before installing it internally, just to make sure the computer recognizes the drive as bootable. That way, once you restart the reassembled computer, you can at least be sure that there's a drive with a bootable operating system available. then open up the computer and swap the drives.
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- clone the operating system+user data from the internal HD to the external SSD using Disk Utility, SuperDuper! or Carbon Copy Cloner (you can also do a clean operating system install by downloading an installer from the App Store and installing it on the new drive).
- attach the SSD as an external drive first through USB/FireWire/ Thunderbolt.
- What steps have you already taken? If you can give us a detailed list of the things you've already done, in order, it will be easier to determine where the problem is.Ī common technique to replace an internal boot HD with an SSD would be to: Of course, if the way you installed this SSD was to remove the previous internal HD and install the SSD in its place, without formatting the new SSD and installing a bootable operating system first, then there's no operating system or formatting utility at all. Unless the operating system on the old boot drive posts a dialog box offering to format the unrecognized drive, the computer doesn't "detect" anything because there isn't anything the operating system can speak to yet. A new internal drive normally ships unformatted.