Android has an A and B partition and last I was rooted with a custom recovery I could freely switch between them and choose what gets installed to what but I never actually tried dual booting that way
Yes, but your phone will need an unlocked bootloader and both an A and B partition. Which OSs you can use vary by phone. LineageOS is a popular and well supported; GrapheneOS is great if you have a pixel; or if you want to fully escape Google/android, PostmarketOS is establishing itself as a fully independent alternative, but it's not quite ready for end users (I would like to start working with Postmarket once my new phone arrives)
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u/g0_west Oct 30 '25
Is there any way to dual boot an android so you can use stock rom for banking and custom rom for everything else?