hard drive
US /ˈhɑːrd draɪv/
UK /ˈhɑːrd draɪv/

1.
disco duro
a high-capacity, self-contained data storage device containing a read-write mechanism and one or more platters, used in computers.
:
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I need to replace the hard drive in my old laptop.
Necesito reemplazar el disco duro de mi portátil antiguo.
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Make sure to back up your data to an external hard drive.
Asegúrate de hacer una copia de seguridad de tus datos en un disco duro externo.