Easy to FIX Right click on my computer Choose MANAGE Then find DISK MANAGEMENT You should see your ext hard drive under the list. Disk cleanup for mac. Right click on it, and choose CHANGE DRIVE LETTER Choose anything, but I recommand something higher than M: I've seen this problem with alot of STORAGE DEVICE It happen more often with Laptop because they usually have Card reader.

So it makes couple drives like e:, f:, g. Storage device tries to install themself with the drive letter next to CDROM c: - HD1 d: - HD2 or CDROM e: - Mass storage device (maybe for card readers) So your external HD tries to have the E: drive (probably a bug) See ya. Easy to FIX Right click on my computer Choose MANAGE Then find DISK MANAGEMENT You should see your ext hard drive under the list.

Buffalo External Hard drive doesn 't show up under Computer. Jpress1206 Mar 28, 2012, 5:07 PM When the hard drive is plugged in, it registers under Devices and Printers but does not show up under. See it on Amazon. One of the Classiest Looking Hard Drives for Mac G-Technology G-Drive Mobile 4 TB. The G-Technology G-Drive external hard drive comes with 4 TB storage capacity, USB-C compatible and USB-A cable and a USB 3 port.

Right click on it, and choose CHANGE DRIVE LETTER Choose anything, but I recommand something higher than M: I've seen this problem with alot of STORAGE DEVICE It happen more often with Laptop because they usually have Card reader. So it makes couple drives like e:, f:, g. Storage device tries to install themself with the drive letter next to CDROM c: - HD1 d: - HD2 or CDROM e: - Mass storage device (maybe for card readers) So your external HD tries to have the E: drive (probably a bug) See ya. Still having problems. Hi, I hope you can help me. Bought a laptop SATA HDD to replace my old one with.

I stuck it in an external case in order to back my current HDD onto the new one. However when I connect the new one in the external case it does not show in my computer although the computer has 'installed' the the 'new device' and it shows up as being connected in the hardware list in the control panel. I simply am not able to access it or manipulate it. The advice given above does not work as it is not available in the DISK MANAGEMENT list.

Can anyone help me. Simpletech 500gb Ext HDD cannot be seen in my computer I have a Simpletech 500gb external hard drive and it was working fine for a while. I was using it mainly to store and backup my data and regularly connected it to my PS3 to watch movies. When i was trying to adding more data onto it one day, a message came up saying that the disk was full. I pressed cancel thinking that I would need to remove some files to make room.

But after i pressed cancel, my external was no longer shown in my computer. It still mad the noise when I disconnected and reconnected and had the safely remove device icon in the right tray. I tried to research on the problem and called the company for some support. The technician said that it was because of the PS3 that it doesnt show in my computer, but i was thinking it worked fine before. Anyways, he told me to right click on my computer and click on manage. Then goto disk management to format my external. I did just that, and formatted it but after around 5-6 hours it was still formatting so i cancelled it.

It now appears as Local Disk F: instead of orginally E: and everytime i try to right click or double click on it, it freezes the window and makes it not responding. Any help will be GREATLY appreciated!!!!!! Easy to FIX Right click on my computer Choose MANAGE Then find DISK MANAGEMENT You should see your ext hard drive under the list.

Right click on it, and choose CHANGE DRIVE LETTER Choose anything, but I recommand something higher than M: I've seen this problem with alot of STORAGE DEVICE It happen more often with Laptop because they usually have Card reader. So it makes couple drives like e:, f:, g. Storage device tries to install themself with the drive letter next to CDROM c: - HD1 d: - HD2 or CDROM e: - Mass storage device (maybe for card readers) So your external HD tries to have the E: drive (probably a bug) See ya. Easy to FIX Right click on my computer Choose MANAGE Then find DISK MANAGEMENT You should see your ext hard drive under the list. Right click on it, and choose CHANGE DRIVE LETTER Choose anything, but I recommand something higher than M: I've seen this problem with alot of STORAGE DEVICE It happen more often with Laptop because they usually have Card reader. Office 2011 mac os high sierra.