Important: after upgrading to Android 8.1, the data on an internally formatted SD card is lost - it's like changing cards.
So, back up the data from the card beforehand!
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Originally Posted by parkher
I wonder what were the "technological reasons" for not using the 512 GB card.
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1.) About the technology of an SD card:
The problem lies in the MLC Flash technology: after a relatively small number of write processes (from 300 to 1000) this point becomes defective. "Replacement points" are therefore determined and used. For this, a certain space is specified on the flash memory. And if there is no more free space to "relocate" defective memory cells, then the card is defective.
When formatting internally, the Likebook does not determine this space according to the card size, but with 16 MB, which makes sense in terms of size for a 128 GB card - a 64 GB card would therefore last about twice as long. So you can assume that a 512 GB card will only stay fine 1/4 of the time - that was one of the reasons I switched.
2.) for Samsung and cards larger than 128 GB:
Every Samsung card that I have formatted for internal use has shown me twice the size, but half of which is already in use:
- 128 GB card - size 256 GB, 128 GB for system in use,
- 256 GB card - size 512 GB, 256 GB for system in use,
- 512 GB card - size 1 TB, 512 GB for system in use.
- every other brand (I have tested) with sizes over 128 GB has shown the same.
I have therefore decided to switch to
128 GB Sandisk Extreme cards - they are shown as slow during "internal" formatting, but they are not.
I now use the old "internal" (512 GB) with a
stick as a USB OTG after I have "rebuilt" them again with the
Minitool Partition Wizard - 128 MB free and then NTFS (128 because NTFS performs more write cycles).
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And where to find android 8.1 for Ares?
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Here