Remember the command line is unforgiving, if you are not comfortable at the command line it would be much more appropriate to erase and format a disk using Disk Utility in the standard interface of Mac OS X. It is absolutely critical that you use proper syntax when identifying the disk to erase. Improper identification may lead to erasing the wrong disk, permanently destroying any data on it. Do not screw this up. For some quick reference, here are a few examples of various disk erasure methods for different file system format types.
As always, be sure you change the disk node as appropriate for your disk. All volumes on this disk will be destroyed. Ownership of the affected disk is required.
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You cannot erase the boot disk. Single User Mode alone is not sufficient to erase the actively booted operating system. Enjoy this tip? Subscribe to the OSXDaily newsletter to get more of our great Apple tips, tricks, and important news delivered to your inbox! Enter your email address below:.follow site
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Thanks for the interesting article. The spreading of knowledge should never be discourage. They will learn something from it. And no great disaster will occur. My story is I hand off USB and other older hard drives. One way I was taught was to hard format a drive in Windows, then do similar in Mac, then again format in Windows, then add the data.
For jpgs, this should elimant many software recovery options. My understanding of how your trying to do secure deletes: As a bare minimum overwriting the whole disk 7 times is considered just about acceptable.
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Why is Apple holding back from implementing a modern disk file system on their computers? The specs for one of these was offered to them and basically everyone else free of charge, quite a few years ago by Sun Microsystems. Apple charges a higher than normal price for what I will admit is a higher than normal quality machine.
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So, please, put a few of your brilliant engineers on this, would ya? Failure should not be an option.
Maybe they will release new Macs in that time that could use it. Under the strictest supervision from Apple, I was able to do this from the command line. There are several alternative appearance settings. After this shows up in terminal.. This is what I see. This worked great, thank you so much for showing me how to erase a hard drive from the command line. Hi — Despite my double checking the list to identify the right dev to delete, I deleted a drive that had all of my photos. I have four drives in an external Stardom stack.
How to Erase a Disk from Command Line in Mac OS X
I was having problems with a corrupted drive. Do you have any advice on how to retrieve the files? EFI How do I continue? Apple Devs are going down the drain these days! Hi, I tried a lot of command from here but was not able to repair my GB lexar flash drive. I got this error: Wiping volume data to prevent future accidental probing failed Can anyone help me on this? On MacOS But the CLI way went alright! Hi, I tried a lot of command from here but was not able to repair my 16GB flash drive. Wiping volume data to prevent future accidental probing failed I spent two days on it and found no solution.
Please help me on this? Thank you for this. I follow the instructions, and I received the message:. This is an article for Mac, it is erasing a hard drive from a Mac command line, it is not a Windows tutorial. You can, however, format a Windows hard drive from a Mac if you connect the Windows hard drive to the Mac and format it through Disk Utility, or the command line as described above. If you are having a hard time using the command line, try the Disk Utility app, which is simpler and uses the GUI. Gopper, Who said that I was using the command line code in a windows machine?
In fact, that commands wont work in windows. Hey Luis, have you found a solution to your problem?
I bought a new hd, and keeping the old one until find a way to format it. How are you going in your searching? Thank you!
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This post is older, but incredibly relevant when you need it. Again, thank you. But I keep getting: Could not mount disk2s2 after erase error Error keeps showing. Name required.
How to Erase a Disk from Command Line in Mac OS X
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Reproduction without explicit permission is prohibited. Enter your email address below: Posted by: Bev in TX says: August 30, at 2: Paul says: If you plan on only using it on a Mac you will want initialize it. You will need to initialize the drive before use. Launch the Disk Utility by double-clicking on it. All connected hard drives will be listed to the left. The mountable partition s of each drive will show beneath it. Highlight the partition of the LaCie drive and look at the information at the bottom of the window. Initializing or partitioning the drive will erase all data on the drive.
While various versions of the Disk Utility will be slightly different, they all operate similar to these instructions. Using the Partition utility will verify that all previous formatting information is deleted before initializing. Highlight the LaCie drive in the list to the left and click on the Partition Tab. You will not get a Partition Tab if the mountable portion of the drive is selected.
You must select the drive. Highlight each partition to change the Name, Format and Size. Select the Volume Format. Mac OS Extended Journaled will be the best format to choose for the external drive. To change the Volume Format, click on the chosen format and select another. Various versions of OS X will give different selections: Apple Scheme, Apple Partition Map, etc.