If the USB drive appears non-functional per the above troubleshooting, please contact SanDisk support for further assistance with warranty. If the USB flash drive is not detected on other computers or if other USB devices are working properly on this Mac then most likely the USB drive is not functional. If the USB flash drive is not listed under USB hub please verify other USB devices work properly and if possible test the USB flash drive using a different computer. This will open the mount point for all drives connected to the Mac computer. You can verify is the drive is mounted by Selecting 'Go > Go to folder' from the file menu and typing /Volumes/ (Note: This is case sensitive). Heres an outline: Formatting Errors Errors can crop up while formatting your drive and one of them those it could lead to is You guessed it, external hard drive read-only errors.

There are three major reasons why your Mac external hard drive receives read-only errors. If you see Flash Drive listed under the USB hub the USB flash drive is detected properly. What Causes External Hard Drive Being Read-Only on Mac. If the Finder preferences are set to mount external drives to the desktop we will need to determine if the USB flash drive is detected by the computer Ensure the check box next to External disks is checked Click Finder in the upper left corner of the screen and select PreferencesĢ. With the Flash Drive connected to the USB port of your computer:ġ. Aluminum usb 3.First we need to check your Finder preferences and ensure external disks are set to mount to your desktop.CFexpress SD memory card readers usb type c CF express Card reader Ma7:47 am.3 port hub usb3.0 (1) 3 port usb hub (3) 3.0 hub (1) 6 port usb hub (1) 22 keys numeric keypad (1) aluminum usb hub (1) ATM card reader (1) bluetooth numeric keypad (2) CAC readers (1) card reader (4) CF express card reader (3) CFexpress card reader (4) chip card reader (1) credit card reader (2) docking station (4) EMV Smart card reader (1) hub usb (3) hub with card reader (1) hub with SD TF card (1) ic card reader (2) ID card reader (3) iso 7816 smart card reader (1) keyboard (1) memory card reader (2) Memory card reader writer (1) micro sd card reader (1) mini number keyboard (1) mini numeric keypad (2) mobile phone charger (1) multi port hubs (1) numeric keypad (3) SD card reader (2) SD card reader writer (1) smart card reader (7) TF card reader (1) type c hub (6) usb-c hub (8) usb 3.0 hub (3) usb c adapter (1) USB HUB (12) usb hub 2.0 (2) usb hub 3.0 (4) usb hubs (2) wireless numeric keypads (1) XQD card reader (2) New Arrivals

Mac drive reader