Wanted to post my experience so far for others that are in the same niche as me, as I didn’t find much on it looking around.
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Prior to moving my SSD to OLED, I made sure I was current on updates with SteamOS, specifically I was in the Beta branch.
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I also made sure to download the new APU/SD card drivers on my windows partition. Someone managed to find a wifi driver that works for Windows here - https://oemdrivers.com/network-qualcomm-qcnfa765
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Haven’t found a working Bluetooth driver yet for windows, so be forewarned on that
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After the above, I just plucked out the SSD from the LCD over to the LE OLED model - as others have mentioned, be careful of the ribbon cable. I managed to bend back the protective plate enough to get at the screw holding the SSD in place, it was easier getting out than putting back in, but after about 5 minutes of carefully keeping the protective plate peeled back and making sure SSD was properly seated, was able to get screw back in
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After initial boot with my 2tb SSD, selected the SteamOS boot, got into it, immediately ran another update, restart, and boot straight back to SteamOS.
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I use Clover as my boot manager, so went into desktop mode and ran the tool, made sure to re-enable the efi partitions again and changed the theme.
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Restart now brings me to the boot manager, selected my Windows 10 partition
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On boot, it was oriented in portrait mode (sideways), super easy fix by changing back to landscape
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Ran APU, SD card, WiFi drivers, everything with those are more operational
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Windows still missing audio and Bluetooth drivers, but is otherwise functional
Figured to post this to make sure others know what to expect, overall much easier than I thought it was going to be.