Problem with XP partition

[manuel mizael gonzalez contreras]

Hello, everything was going good, i was able to copy and paste on my xp 
partition in my ububtu, but one day i tryed again and an error appears, 
Error durante la copia a «/media/disk/...nd Settings». or error in the copy 
of «/media/disk/...nd Settings» saying that i No tiene permisos para 
escribir en esta carpeta, or that im not in sudo, what can i do?

Thanks

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