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Disk Erase Failed With The Error File System Format Failed

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Mac Disk Erase Failed File System Formatter Failed

is a question and answer site for power users of Apple hardware and software. Join them; it only takes a minute: Sign up Here's disk erase failed with the error unable to write to the last block of the device how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Unable to format / erase hard drive up vote 11 down vote favorite 3 I have an external HD disk erase failed with the error posix reports the operation couldn't be completed that died on me a while ago and I'm trying to see if I can format / erase it to start using it again. The disk does not show up in Finder but I can see it in Disk Utility. When I try to erase it from there I get Disk Erase failed with the error: POSIX reports: The operation couldn’t be completed. Cannot allocate memory When I try to verify the volume: diskutil verifyVolume /dev/disk2 Error starting filesystem verification for

Disk Erase Failed With The Error Invalid Request

disk2: Unrecognized filesystem (-9958) I've tried running a surface scan in Techtools Pro, it processed 650 blocks and all were bad. I cancelled the operation cause it was very slow. Diskutil info /dev/disk2 tells me: Device Identifier: disk2 Device Node: /dev/disk2 Part Of Whole: disk2 Device / Media Name: WD Ext HDD 1021 Media Volume Name: Escaped with Unicode: Mounted: No File System: None Partition Type: None Bootable: Not bootable Media Type: Generic Protocol: USB SMART Status: Not Supported Total Size: 2.0 TB (2000396746752 Bytes) (exactly 3907024896 512-Byte-Blocks) Volume Free Space: Not Applicable Read-Only Media: No Read-Only Volume: Not applicable (no filesystem) Ejectable: Yes Whole: Yes Internal: No OS 9 Drivers: No Low Level Format: Not Supported I've also tried: diskutil eraseDisk JHFS+ Stef2TB /dev/disk2 Started erase on disk2 Unmounting disk Creating partition map Waiting for disks to reappear Formatting disk2s2 as Mac OS Extended (Journaled) with name Stef2TB Error: -9944: File system formatter failed Can I salvage this drive somehow or is it ready for the trash? hard-drive disk-utility share|improve this question edited Oct 26 '14 at 14:24 nschum 1285 asked Mar 30 '14 at 8:28 stef 2132511 Did you find the answer in the end? Im having the exact same issue.. –user88264 Aug 20 '14 at 12:37 add a comment| 5 Answers 5 active oldest votes up vote 10 down vote I found this worked perfectly (from the terminal): diskutil eraseVolume ExFAT MyName diskX You'll need to change d

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Disk Erase Failed With The Error Invalid Request Exfat

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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Super User Questions Tags Users Badges Unanswered Ask Question _ Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Mac OS X fails when trying to format external HDD up vote 0 down vote favorite 1 I have an Iomega Prestige desktop hard drive (1 TB) which I purchased from Amazon. I connect it to my white Macbook (purchased late 2007, 2.14 GHz with 2 GB Ram), open Disk Utility. I click the single partition on the disk, choose "Mac OS Extended (Journaled)" for the Volume Format and leave the name as-is. When I click "Erase", I get the following error after only a few seconds: Volume Erase Failed with the error: The underlying task reported failure on exit If I try to create a new partition with the same filesystem, I get the following error: Partition failed with the error: File system formatter failed. This is the second disk I've tried this with - I sent the first one back to Amazon thinking it was defective, and they sent me a replacement. Obviously, it's unlikely that I managed to procure two defective drives, so I'm thinking there may be something wrong with my machine. Another note - I've tried doing the format with the disk connected to both USB 2.0 ports on my machine, as well as connected through a USB hub. The behavior is the same, regardless of how the drive is connected. osx hard-drive external-hard-drive formatting share|improve this question edited Mar 4 '10 at 12:01 community wiki 4 revs, 2 users 67%inkedmn add a comment| 5 Answers 5 active oldest votes up vote 1 down vote accepted Just for the sake of having an answer here, this is what ended up fixing the problem: Connected the disk to a windows XP machine Deleted the existing FAT32 partition that the device shipped with using Disk Management under XP. Connected it to the Mac, partitioned and formatted without issue. I won't make this the selected answer unless somebody upvotes it, and I'll make the question community wiki. share|improve this answer ans

 

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