Force eject a volume mac

Doing it now. I should also add — DiskWarrior was the first program I tried. If you connect a damaged disk, and the light indicates heavy activity but the OS does not immediately complain or appear to mount the disk, it is likely running fsck in the background. However, after a very long time it would sometimes mount the disk in read-only mode, and tell me that the disk could not be repaired and I should copy files I needed as soon as possible.

I found that if I killed the fsck process, it would skip right to mounting it as read-only which, if you have a damaged disk, is probably the best you can hope for. Note the second column a number will be the process ID e. Use that number not to kill the process:. Great advice — found the fsck process in Activity Monitor, killed it and very shortly after, the drive mounted.

I have tried everything that has been mention on the above comments, and were now trying this but i am not sure what number i sould use? The disk that will not show up is the one reffered to as disk2s2, and i could see the fsck activity as you mentioned. When i ran the comando this came up:. U pm If you want to fully automate the process of ejecting the disk based on a partition name, this should do the trick:. I have two simple shell scripts to make this easier because I can never remember the detail: unmountl. This definitely does work, it just takes some time.

If the light on your hard drive is blinking or you can hear the motor spinning, that means you Mac is trying to read it. It may time out, so you have to continue to prompt the disk utility to unmount, even if it says that the disk is already unmounted. Mine finally unmounted after about ten tries. Then I typed the command to mount and it did. You have to be patient and stay at it. Remember that you are working with a machine. DU says to repair disk and then try mounting again. Hi, thanks for this! I do not see the external dvd writer listed.

I do see it under disc burning and I can see the player with toast but cannot mount anything, data or dvd discs.

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How to Force Eject a Volume or Drive in OS X

Thanks man! This saved my Harddisk it wouldt come up at finder only disk utility. Now its reconized, going to make a big backup and send it back :. Also, it shows up in my disk utility in grey. Is there a way to at least get the files off of it if it is damaged? My external drive is now greyed out in Disk Utility though the repair function works and says the disk is OK. The disk permissions option is missing. Nothing seems to work. How I can unlock my disk please help me out M in very bad situation and my drive is a fusion drive.

Hi my external HDD is not getting mounted. This is what the results say:. What am I doing wrong or what is the issue? I need mount disk1s2. It is an external HDD with an Apple file system. I am trying to retrieve my personal data.

5 ways to eject an external drive from a Mac

It crashed due to the Yosemite upgrade. I have the same problem!!! I would have died if I lost everything on my external hard drive. You saved my HD many times because of this tip alone. Thank you thank you thank you. It seems to unmount a mount my USB3. The HD under the indented section on the left panel would be in grey. Nothing worked until I tried the most crude method mentioned on the forum as my last resort: shut down the computer manually close all apps, press down the power button until it shuts off with the external HD still plugged in, then started it back up and it worked!

Hope this is helpful. Thanks a bunch Xira!! Your method is the only thing that worked.


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How to Mount a Drive from the Command Line on Mac

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April 26, at am. Nigel Pye says:. April 1, at am. For more, here's all you need to know about MacOS Sierra. Be respectful, keep it civil and stay on topic. We delete comments that violate our policy , which we encourage you to read. Discussion threads can be closed at any time at our discretion. Don't show this again. Laptops 5 ways to eject an external drive from a Mac Pick your favorite way to eject disk volumes from your Mac and put an end to the Disk Not Ejected Properly warnings.

How to force a Hard Drive to unmount for formatting in Mac OS X Disk Utility

By Matt Elliott. A list of all the disks currently attached to your Mac is returned by diskutil. The Mac uses identifiers in the following format: diskx where x is a number. The Mac counts drives starting at 0 and adding 1 for each additional device it finds.

Mount & Unmount Drives from the Command Line in Mac OS X

Examples of the identifier then are disk0, disk1, disk2, and so on. You may see entries like this:. In this example, there are two physical disks disk0 and disk1 , each containing additional partitions. Read across to find the identifier, and then use just the base name of the identifier in the diskutil eject command. The DVD that is stuck in the Mac shows up as disk1s3. Once you have the optical drive's identifier in the example disk1, you're ready to use Terminal to eject the media from the specific drive.

Remember to change the identifier in the above example to match the identifier you found using the diskutil list command. If the stuck media is in an external DVD drive, there is a good chance that it may have an emergency disk eject system. This simple system consists of a small hole usually located just below the DVD drive tray. To eject a stuck DVD, unfold a paperclip and insert the now straight clip into the ejection hole.