Question about Vantec NexStar HX4 NST-640SU3-BK Black Quad Bay HDD Enclosure

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Vantec hx4 The entire tower will randomly unmount then moments later remount themselves. Running late 2012 mac mini over USB3. I have two of these 4 drive units and both have the same issue

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I recently had a hard drive issue with my mac so I had to get a new one. I had also lost my old boot disk so I needed to do it by usb. But the problem is that I need a Mac OS to make an OS X Yosemite

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C07K1317DWYL confirm valid serial number or not

According to that is a valid serial number for a late 2012 model Mac mini.

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Mac serial numbers C07M3AV8DWYL

According to the serial number, the late 2012 Mac mini's maximum Resolution: Up to 2560 by 1600 (Thunderbolt) or 1920 by 1200 (HDMI). However, this mini does not have a slot loading DVD drive.

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Since OSX Mavericks was just announced, I'm going to assume that's what you're wanting to upgrade to.

Not all Macs can run Mavericks.

Mavericks Capable Macs

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I removed the back up drive from my iMac with out reading directions; just unplugged it! Now I replaced the line into the USB and it is not working and not shoiwng up on the computer. What do I...

Before you unplug an external hard drive, you need to unmount it first. If you don't, you can cause all kinds of problems.The term "unmount" basically means to prepare a drive to be unplugged from the Mac. In addition to external hard drives, "thumb drives" a/k/a "jump drives" as well as some cameras need to be unmounted before they are unplugged.When you unmount a drive, Mac OS X checks to see if you have any open files that are stored on that drive. If you do, the drive cannot be unmounted. This is a safety feature because if drive is removed with open files on it, the application that is using those files can become confused and you can lose or corrupt your data.
If you unplug a hard drive that has not been unmounted, Mac OS X will pop up a box with a red Stop icon and a message that you shouldn't have done that. Nice info, but a little late at that point.
I'm not saying that you will lose data every time you unplug a mounted drive, but the danger is there. I recently worked with someone who had his iPhoto Library on an external drive and he never unmounted the drive before unplugging it. It wasn't a problem for a long time but one time he opened iPhoto and all of the photos were missing.
Unmounting a drive is easy. There is an Eject icon to the right of the drive name in the DEVICES section of a Finder window. Just click that icon.
If you have multiple partitions to unmount, you can hold down the Option key when you click the Eject icon to unmount them all at once.
I thought about it and did some looking and I couldn't find anywhere in Mac OS X that states the need to unmount before unplugging, other than the big Stop icon you get after the fact. I don't think it is something you are likely to think of on your own, either. But now you know.

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Vantec nexstar will not mount as removable

On windows seven there is no eject or remove safely in the main menu. Use mouse click <START> <Devices and Printers> find the device then right click and then select <Eject> or <Remove Safely>

Voil? you now can remove device without having to shut down computer.

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I have a WD MyBook Essential 1TB external hard drive installed with my Mac OSX 10.5.8. The drive is only being used for Time Machine and my iTunes backup. The drive will randomly unmount itself and I get...

I would suspect that either the USB cable or port is the problem. Change the USB port (On the Mac or on the WD MyBook (I don't know if it has more than one USB port) that the cable is connected to and see if that improves the situation, if it still happens change the USB cable. Hope this helps.

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