![]() ![]() ![]() Seagate 4TB USB Drive: Fast, quiet, and spacious - the best value in storage. See your product manual for which Toolkit activities are supported by your drive. Seagate One Touch 4TB Portable External HDD - Black. For information on how to tackle partition and volume problems, see this article. Get the most out of your storage solution with easy-to-use tools such as Backup, Mirror, Sync Plus, Seagate Secure, and RGB and Status LED Management. Last but not least, there may be problems with the drive itself, which can be caused by a number of issues including power or connection interruptions without properly unmounting the drive (a frequent occurrence for external drives). Then boot normally and reboot again (the first boot will fill caches and be a little slower than the second) before trying the problematic external drive. Reset the PRAM and SMC, followed by booting into Safe Mode and clearing caches and performing a permissions fix with various maintenance utilities (********, Yasu, OnyX, just to name a few). Give your computer a once-over maintenance run. If it does with any of the ports, then you know the device is probably not to blame and can focus on troubleshooting the bus/connector that is causing issues. Some devices have both USB and FireWire ports, so use each of them to see if the device works. Do not route it through the keyboard or a USB/FireWire hub, as this is yet another source for incompatibilities and problems. Carbonite auto backup software and business solutions help protect your personal and business data from common forms of data loss. When troubleshooting USB or firewire devices, unplug all except for the problematic device (and your keyboard and mouse, of course) and plug it directly into your system. Low power can definitely prevent a drive from working properly. If you have one, try plugging it in so the drive is not reliant upon bus power. Some external drives come with optional power adaptors (especially smaller and more portable drives). You can also try this when booted into Safe Mode, to see if any third-party plug-ins or nonessential features of OS X are contributing to the problem. Try each USB or FireWire port available on your system (use FireWire 400/800 adaptors or conversion cables if necessary) to see if that helps. Sometimes there are differences in the USB ports on the system, which result in power or speed differences that can result in external devices not being recognized properly. Press the Option key and right-click the Finder icon in the Dock, and choose "Relaunch". The discs may be mounted and available however, if the Finder is having troubles displaying them then it may appear as though the discs are not mounted. ![]()
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