I use atmosphere on sysnand, do I have to format my sdcard to install android on my oled switch?

[Tofutuesdays]

as the title says

 

[InsaneNutter]

You have to partition your SD card, so will need to backup the data on it first (copy it to your PC) you can copy it back after however.

Follow the instructions here: https://wiki.switchroot.org/wiki/android/11-r-setup-guide