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SD card not selectable during installation, but mounts on boot

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linux-howto

http://crunchbang.org – Providing the 'tablet' is actually a netbook,If it is inserted before booting, it should be seen when the system comes up.(Others have used an SD card in combination with their small internal SSDs, so it should work.)If it really is a tablet, then I have no idea, sorry. (HowTos)