Write denied on exfat usb hdd mounted locallly

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15

It might be better/easier to re-partition/re-format you USB drive(s).

If you wish to keep any data existing on the USB drive:

1. Create a disk image, perhaps using Disks (gui app)

sudo pacman -S gnome-disk-utility
  • You will need enough available space – somewhere – to store this disk image. Close Disks when finished imaging.
  • Ensure that you can access the disk image to extract/save any data you wish to keep. When your data is safe, delete the disk image.
  • Clicking the image should mount it under Devices in Dolphin.

2. Fully repartition the USB drive, using GParted (gui app)

sudo pacman -S gparted
  • Create a new GPT partition table (or MSDOS if you prefer)
  • Create a new partition and format it as EXT4 (if it will only be accessed by Linux) or EXFAT (if it will be accessed by both Linux and Windows)

3. The following link relates to using Microsoft filesystems in Linux; it mainly concerns NTFS, however, it also contains other valuable information that you will likely benefit from knowing.

I hope this helps. Cheers.