Can't restore internal hard drive
i use Mac OS El capitan on an about 14 year old macbook pro, and it hasn't been able to boot up since the hard drive reached full space of 1 TB. Ive been trying to restore it on a brand new WD My Passport external HDD of 2 TB and have had no luck, consistently prompted with the hard drive not having enough space to transfer (which i find incredibly hard to believe) please help!!