Will 8gb work on r4ds

Yes, an 8GB microSD card can work with an R4DS (R4 Revolution for DS) card, provided that the R4DS firmware supports it. Most modern R4DS clones and updated firmware versions support SDHC cards, which include 8GB and larger capacities. However, it's essential to ensure you're using compatible firmware and that the card is formatted correctly (typically FAT32) for optimal performance.