Does /mnt/sda1 even exist?
If it does exist, try chmod -R 777 /mnt/sda1
we used sdb1 before but the device is mounted on sda1 now
Does /mnt/sda1 even exist?
If it does exist, try chmod -R 777 /mnt/sda1
we used sdb1 before but the device is mounted on sda1 now