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can not post a blank message. Please type your message and try again. Dommie84 Level 1 (0 points) Q: disc erase failed with error invalid request HI,I'm trying to get a new 2.5tb external wd hard drive to work disk erase failed with the error invalid request exfat with both my mac and my old pc - so i can backup my disk erase failed with the error posix reports the operation couldn't be completed old data from the pc.i have tried using disc utility, and erasing the disk and reformating to ms-dos (fat) format and disk erase failed with the error unable to write to the last block recieve the following error message:Disk erase failed with the following request: invalid requesti have also tried partitioning the hard drive, and recieve the same error message.Any ideas on how to re-format this device?Thanks! MacBook Pro,

Disk Erase Failed With The Error File System Formatter Failed

Mac OS X (10.7.2), WD Elements 2.5tb external hd Posted on Nov 8, 2011 6:27 PM I have this question too Close Q: disc erase failed with error invalid request All replies Helpful answers Page 1 Next by johnhassan, johnhassan Dec 19, 2011 1:24 AM in response to Dommie84 Level 1 (0 points) Dec 19, 2011 1:24 AM in response to Dommie84 I'm having exactly the same problem!Did you disk erase failed with the error couldn't open device ever find out how to format the drive?? Helpful (1) Reply options Link to this post by Webdva, Webdva Mar 12, 2012 11:34 PM in response to johnhassan Level 1 (5 points) Mar 12, 2012 11:34 PM in response to johnhassan Same exact problem to the T. Same drive, same size, same problem. And I'm having this problem in March. Did anybody find a fix? Helpful (0) Reply options Link to this post by Webdva,★Helpful Webdva Mar 12, 2012 11:40 PM in response to Webdva Level 1 (5 points) Mar 12, 2012 11:40 PM in response to Webdva Fixed it. Have to pick a partition scheme (# of partitions) in the partition tab, Then go to the bottom above the plus and minus signs and there's now a choice that says 'OPTIONS'Open that and instead of "master boot record" which is chosen, pick "GUID Partition Table".It'll work now. Helpful (10) Reply options Link to this post by JoeinOz, JoeinOz Jun 1, 2012 5:44 AM in response to Webdva Level 1 (0 points) Jun 1, 2012 5:44 AM in response to Webdva Thanks Webdva. Just what I needed! Helpful (0) Reply options Link to this post by Nick DePauw, Nick DePauw Feb 3, 2013 3:44 PM in resp

new harddrive, go to the erase tab and select MS-DOC(FAT)  I get a notification that says "Disc Erase Failed with the error: Invalid Request" I then tried going on the partition tab, selecting disk erase failed with the error wiping volume data to prevent future accidental probing failed 1 partition, selecting MS-DOS(FAT) format and clicking apply and I get the same error message.

Disk Erase Failed With The Error Couldn't Unmount Disk

What am I doing wrong?? Joe_S 2012-02-23 03:38:33 UTC #2 I don't know much abour Macs. Does your Mac version support 3T

Disk Erase Failed With The Error Couldn't Unmount Disk External

drives? I don't know if you can format a drive that size FAT32 if that is what you are trying to do. Joe Wizer 2012-02-23 14:17:53 UTC #3 moviemagic84 wrote: I am trying to format my new https://discussions.apple.com/thread/3476709?tstart=0 3TB harddrive for my Mac computer.    Everytime I go into disc utilities, select the new harddrive, go to the erase tab and select MS-DOC(FAT)  I get a notification that says "Disc Erase Failed with the error: Invalid Request"   I then tried going on the partition tab, selecting 1 partition, selecting MS-DOS(FAT) format and clicking apply and I get the same error message.   What am I doing wrong?? Can't not be done.. https://community.wd.com/t/formatting-3tb-drive-for-mac-osx-10-6/19685 largest partition for FAT32 is 2TB use NTFS-3G  on your Mac, that's of course if you are thinking about using with windows and mac if just want to use with PS3 or Xbox then two partitions will be required northerngit 2012-02-26 19:41:53 UTC #4 Hi, If you wish to use the disk between a PC and a OS X, then choose exFAT as the format; this should not be limited by 2TB partition sizes. If however, you only need to use this drive on OS X, then simply choose Mac OS Extended (Journaled). TomFoolery 2012-03-08 00:41:08 UTC #5 I have a mac and downloaded and formatted my 3TB hard drive to NTFS3g, but when I plug it into my xbox it wont even recognize it. Any suggestions? Do I need 2 partitions? Wizer 2012-03-09 20:01:08 UTC #6 TomFoolery wrote: I have a mac and downloaded and formatted my 3TB hard drive to NTFS3g, but when I plug it into my xbox it wont even recognize it. Any suggestions? Do I need 2 partitions? To use the drive on the XBOX it needs to be formatted on extFat  NTFS3g is an application to use NTFS drives on Mac Home Categories FAQ/Guidelines Terms of Service Privacy Policy Powered by Discourse, best viewed with JavaScript enabled Support Downloads Knowledge Base German Spanish Italian French

with OS X drives 97 Replies Even though formatting advances like Journaling in Apple's filesystem formats help prevent data corruption, problems can still happen https://www.macissues.com/2014/04/05/how-to-fix-deep-formatting-problems-with-os-x-drives/ that result in a drive not only being unreadable, but also unable to be reformatted. If this happens, the drive may show up in the Finder sidebar but not show http://ccm.net/forum/affich-4848-wd-my-book-formattin data when clicked, or it may just not show up but be present in Disk Utility; however, if you try to mount it you get a "resource busy" error. Another disk erase possible symptom is if you get this error or one claiming the drive cannot be unmounted, when trying to format the drive or running a fix routine on it with Disk Utility. These errors and behaviors might indicate to you that your drive is malfunctioning and you need a new one; however, before you give up on a $100+ drive, ensure disk erase failed the problem is not simply a very low-level formatting snag that causes the drive to hang when accessed. This is especially true if you do not hear any tell-tale signs of physical failure, such as repeated click, tap, and whirr sounds coming from the drive at regular intervals. Assuming the drive is just experiencing major low-level corruption, the problem you face now is how to format a drive that apparently cannot be formatted on your Mac? One option is to use another operating system like Windows in Boot Camp, in a Virtual Machine, or on a dedicated PC to manage the drive and attempt to repartition it; however, this may not be feasible in some situations. Another option that should work in most cases is to use the Terminal to interact with special device files to force an overwrite of the device file representing the drive. OS X Device files The /dev folder has a number of different device files that are assigned to system components and peripherals, allowing programs to interact with them using system calls. These devic

Subscribe to our newsletter Search Home Forum Ask a question Latest questions Windows Mac Linux Internet Video Games Software Hardware Mobile Network Virus Café How To Download Ask a question Windows Software Mac Software Linux Software Android Apps BlackBerry Apps iPhone Apps Windows Phone Apps News Encyclopedia Home Forum MacOS Report WD My Book formattin[Solved/Closed] Ask a question dandan_2300 - Latest answer on Aug 28, 2014 07:34AM Hello, I bought a 1TB Western Digital My Book External Hard Drive, I need to format it to become Mac OS Extended (Journaled) but I am having a problem doing this, I keep receiving the same error message "file system verify or repair failed" It will only format to FAT32, but I need it for Uni to be Mac OS Extended (Journaled). Can anyone help me format this damn thing. I tried the repair disk and verify option but I get the same error. I even tried formatting with 0's (takes hours) and it failed after 7 hours See more WD My Book formattin HELP my western digital is not recognized [Solved] (Solved) Unlocking a WD My Book Essential external hard drive WD My Book reset password (Solved) WD My Book Studio Not recognized (Solved) Forgot ID for WD My Book Essential [Solved] (Solved) Helpful +525 Report CarlaMac May 21, 2008 04:57PM I had the same problem with the Western Digital My Book Essential 1TB External Drive that I bought. It kept failing when I tried to reformat it for my Mac as Mac Extended (journaled). I was ready to return the drive because it was so frustrating! I called WD customer support and they walked me through it over the phone: This is what worked perfectly: Use the Apple Disk utility software that comes with your Mac. PARTITION your Mac as 1 Partition and while you are in that same window, SELECT OPTIONS. THIS IS THE KEY: There are 3 radio buttons in the popup window for formatting options. The

 

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