Apple computers without a built-in optical drive can connect an external Apple USB SuperDrive or MacBook Air SuperDrive to read optical media such as CDs and DVDs. The Apple USB SuperDrive has a slightly longer (340mm) cable compared to the cable on the MacBook Air SuperDrive (250mm). I have Macbook Pro 2011 8GB RAM, 1 TB Hard drive OSX Mavrick. I recently ejected my back up drive but it was not a properly ejected now when i plug in the computer it doesnt come up as hard drive. It shows up in the disk utlity but it doesnt open its my backup drive and i dont want to loose m data.
Click to expand.That energy setting only applicable to internal HDD, not external HDD. For external HDD, you need some simple tool (e.g. Keep Drive Spinning) to avoid disk sleep. Yes, there is no work around but eject the hard drive before 'the machine sleep' (not before you leave the computer). If you don't want to (or cannot) do that manually, you can use 'Jettison' to automatically achieve what you need. Anyway, AFAIK, due to the MacOS will cut the PCIe slot power during sleep. Webdav windows server.
It's impossible for any card to maintain connection to the external HDD. You either let it eject before sleep. Or let the machine never sleep.
I've used Macs for years and never kept external HDD mounted because I found them noisy. I just got an external Samsung T5 SSD and I keep it mounted because I've moved my photo library there and it's where I store my larger media projects on. After a few weeks of use, I've received the message that my drive was not ejected properly, a few times, but only twice in a few weeks. This makes me think it's a bug of some kind and after some looking online, seems to be a long lasting one. The only good thing is that there seem to be no reports of data loss.
External Drive Ejected By Imac And Keeps Running
I'm hoping it eventually just goes away with an update since that seems to be something that has happened. It's been a recurring problem for me (late 2014 5k iMac, lastest HS (updating as each version appears).
I have a TB external (OWC Thunderbay) always attached and, fairly regularly, a USB3 disk attached. Sometimes while actually working, I'd get what I thought of as 'phantom' ejection warnings -- I called them that because Finder continued to show the disks mounted and they were always accessible. Overnight sleep was guaranteed to produce ejections on wake. I thought for a while it was my connections, but even after I used cable ties to lock all the cables down, nothing changed. Msi 915gvmv motherboard drivers for mac. Finally, about a month ago, I said to hell with it so when I leave my workroom at night, I leave the iMac on. Never have had an ejection in the AM. My Toshiba externals put themselves to sleep while I'm working.
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I would say most externals are probably built this way since they are connected to laptops, and sleeping vs spinning would save battery power. To be fair, I've unplugged externals from Windows computers without ever 'ejecting' them when they were just sitting there, and haven't had one fail or be corrupted. Macs or Linux I do unmount them (to play nice) if I'm not going to be using them, and never just leave them plugged in. They're backups, not main storage. Same thing with me.