External hard disk mounted as read-only

Salam semua ahli putera,
nk tanya mengenai ubuntu ak nih asyik detect external hdd read only jek,camne nk bg dia boleh read and write.dah mcm2 cara ak cuba,ak try unmount balik pastu cuba mount guna ntfs-3g tapi dia kata xleh mount .pastu ak ade gak try letak kat fstab supaya dia automatic mount external hdd tu read write tapi xleh gak..camne ek?

kadang-kadang ntfs-3g tak boleh mount tanpa option force

Code:

sudo ntfs-3g /dev/sda1 /mnt/part1 -o force

kalau partition ntfs tu tak clean, mungkin nak kena

Code:

chkdsk c: /f

dulu dari dalam windows (kalau c: partition yang nak mount dlm ubuntu)