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Fishrrman

macrumors Penryn
Feb 20, 2009
28,458
12,574
If you aren't comfortable prying the iMac open (there is definitely a risk of breaking things inside during a drive upgrade), you could do this:

Get an external USB3.1 gen2 SSD, such as:
- Samsung t7 shield
- Crucial X-9
- or buy an nvme blade SSD, and put it into the USB3.1 gen2 enclosure of your choice.

Then, migrate your internal setup (you could use CarbonCopyCloner or SuperDuper) to the external SSD...

Then, set it to be the new boot drive using the startup disk settings pane, and then...
... boot and run that way.

USB3.1 gen2 on an external SSD will give you read speeds around 850-900MBps or even a little better at times. Quite snappy.

Change the display?
If both the display AND the drive are giving you problems, it's probably time to be looking for a replacement.
 

gilby101

macrumors 68030
Mar 17, 2010
2,552
1,368
Tasmania
Get an external USB3.1 gen2 SSD, such as:
- Samsung t7 shield
- Crucial X-9
- or buy an nvme blade SSD, and put it into the USB3.1 gen2 enclosure of your choice.
Or, for a 2017 iMac, a faster SSD in a Thunderbolt 3 enclosure. More money, more performance.
 

macguru9999

macrumors 6502a
Aug 9, 2006
782
363
Your face is familiar, have we met at aspen ??

seriously, i do this upgrade all the time. You cut off the screen and replace the 3.5in spinner with a 1,2 or 4tb crucial sata ssd in a cradle.Then you reboot off an external and install your OS on the crucial ssd and import your files from the backup. Then you erase the mobo ssd format as apfs and delete the little volume so you can ignore it from now on ..... its the best way i have done dozens of them. just be careful with the tool to remove the screen or get someone else to do it whos done one before !
 
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