Wd my book partition failed couldn unmount disk

Now, however, when i open the hard drive, i cannot see any files inside but still. Normally, any couldnt unmount disk error is attributed to circumstances where the boot drive is being modified or is being used by an application or process. Even though i did it, my mac claims that it wasnt eject properly. You may have to still change the number it may not be devdisk2 but devdisk3 or something else, but most terminal command not found errors ive seen have been due to people not typing exactly what theyre seeing no space where there should be one, or an i instead of 1.

If you have any files you want to save, copy them to another storage device. If this is your first backup, or the first time to a new external drive partition, the most common cause might be that the drive has not been formatted properly. The startup disk cannot be partitioned or restored to a single partition. Please select the physical hard drive instead of the partition and then press the erase button. Instead of selecting my passport, selecting its parent wd my passport and following the remaining instructions worked. With disk utility running see if it shows on the left side. Western digital my book comes under the series of external hard drives manufactured by western digital.

Jun 01, 2015 32 thoughts on tackle external hard drives randomly ejecting in os x hax june 1, 2015 at 7. Device manager shows no issues and reports it as wd my book 1140 usb device. After few successful backups, i decided to encrypt back up. In mac os x, select the disk image on the desktop and drag the disk image to the trash, which will change to an eject icon. My passport wd external hd fails to mount to desktop ifixit. How to recover or rebuild firmware of bricked wd my book world edition white light or installreplace brand new hard disks. Use the command line to fix couldnt unmount disk error access terminal application. The new pc reads the external drive ok, but when i tried to set it us as a backup it told me it couldnt as it wasnt ntfs, but it actually is. I couldnt repair or even erasereformat the time machine partition through disk utility as it just didnt recognise it.

Open the disk utility app on your mac using one of the following methods, depending on the type of disk or volume you want to erase. Drive to unmount for formatting in mac os x disk utility. Rescue data after mac partition failed with error could. In utilities, go to disk utility and try to unmount the hard drive from there. The startup disk must be formatted as a single mac os extended journaled volume or already partitioned by boot camp assistant for installing windows. Apr, 2015 the only thing i can think of is that youre accidentally typing it wrong. Apr 05, 2014 99 thoughts on how to fix deep formatting problems with os x drives. I read all the above and was about to start building a lynx box when i came across.

How to fix partition failed couldnt unmount disk error. Partition failed could not unmount disk mac data recovery. Automatic way to resolve partition failed could not unmount disk issue. In my experience the mac finder warning disk not ejected properly arises due to lack of full compatibility of the external device. Unable to set wd my book 3tb external drive as backup disk. Since the connection between your mac and external hard drives relies on cables, loose connections could be the cause that your external hard drive is not recognized by your mac computer. This ending up damaging the hard disk causing me a lot of data lost. Solution disk erase failed with error couldnt unmount. Resolve a couldnt unmount disk error in disk utility for mac. The screenshot shows that you should delete one level lower in the hierarchy than actually works.

Jan 26, 2008 due to a series of apparent blunders, i cant access anything ive copied to the wd nor can i unmount it either on this mac or any of my other macs disk utility will not allow me to partition or erase the drive because it is unable to unmount the disk. It will scan all system files, dlls and registry keys that have been damaged by security threats. How to resolve the unmount error with a usb boot drive. Unable to mount wd my passport 1 tb hard disk on ubuntu 12. This site contains user submitted content, comments and opinions and is for informational purposes only. When the free disk space of a partition is not enough, things might become difficult sometimes. I had to remount either its a rightclick or a button the partition from disk utility and then repair the partition.

Aug 11, 2011 i have a 1tb wd elements external drive that was being used on a windows 7 machine. Wd my book not initialized unallocated windows 7 help. Disk management shows the file system as raw and healthy primary partition. Highlight your drive and click partition in disk utility.

If the internal drive is causing the issue because the os x recovery exists as a partition on the physical disk, unable to modify or unmount the internal drive, then the preference must be given to a network drive or an external drive. Oct 06, 2016 have you ever tried to format a disk in mac os x and disk utility won t unmount the hard drive for formatting. Details say unmounting disk, couldnt unmount disk, operation failed. How to resolve a partition failed error in mac os x. How to fix partition failed error couldnt unmount disk. Due to its different data storage sizes and portable nature, they are used by a large number of users to backup their data. Feb 12, 2012 im trying to erase my ssd internal drive that is corrupted software yosemite. Solution disk erase failed with error couldnt unmount disk. I received partition map check failed because no slices were found.

Persistent error when formatting or deleting volumes from. However, there are so many applications to restore external hard drive, you must select the efficient one for complete wd my book partition recovery. Tackle external hard drives randomly ejecting in os x macissues. I have been using wd my book essential 3tb as time. Reboot into win 7 x64, and it is still not working. Partition issue, couldnt unmount dis apple community. Windows has its own disk partition manager application called disk management. External hard drive not mounting apple developer forums. All volume failed to mount the data volume on the drive is not accessible. If hard drive is not showing up in disk management and device manager, it may be because it is not enabled in system setup bios. How to fix external hard drive not mounting in macos catalinamojave issue. Got an external hard drive mybook western digital by someone who didn t know im using linux. It was originally a fat32 drive but i partitioned it as one half mac file system and one half windows ntfs i think.

How to force a hard drive to unmount for formatting in mac. How to fix bricked wd my book world edition white light or. Cannot unmount wd external hard drive macrumors forums. How to partition external hard disk with windows easily. Feb 08, 2020 how to partition an external hard drive on mac. Even though i did it, my mac claims that it wasn t eject properly. I assume youre trying to format it on a mac, probably the error is because it failed to unmount the disk. Cant unmount or reformat wd essential 2t wd community. I have been using my 500gb portable wd hard drive for 3 months or so. The reason why i am asking is because i usually eject my hd by dragging it to the trash icon. It can happen for external usb and firewire as well as internal disks. Acc to what i understood from western digital, the virtual cd drive partition cannot be removed, only disabled.

One day the disk become unrecognised on the computer. I have been trying to format my wd portable hard drive for the past few hours with no luck. External hard drive not mounting 282938 views 71 replies. You will need to enter bios to verify their current. Since you may store many files to the western digital hard disk every day, it is obvious that the original disk space can no longer meet you needs to save more data sooner or later. Without any delay try to recover the inaccessible data from failed mac partition using compatible data recovery tool. External hard drive shows in disk utility, but not in. Tried to find a solution to my question by looking first to the questions already asked about it, but couldnt find anything suitable, some im trying my luck. Wd my passport and following the remaining instructions worked. My book live data volume failed to mount ssh must be enabled hard drive on my macbook pro has two partitions. I mean, some devices generate such issue but others do not on the very same mac. Flashing folder, blinking question mark, white screen, freeze randomly duration.

Several weeks ago, when cleaning the house, i am accidentally drop my wd mybook world when trying to rearrange its location in the house. Keep in mind that im a graphic designer, this is why i am so passionate about fixing this issue. I have been using wd my book essential 3tb as time machine. Got an external hard drive mybook western digital by someone who didnt know im using linux. Tried to erase wd my book for mac external hard drive and it. Solution disk erase failed with error couldnt unmount disk mac. The usb boot drive is attached to the mac, and the system is rebooted. We can save music in one partition, pictures in one and movies in another one. No doubt, mac data recovery software is an extremely simple and reliable tool that rescues data in. The path to the partiton for me is devsdb4 it may be different for you. Only top led is blinkingflashing and mbwe doesnt appear in my network environment. Disk utility mainly known for its trouble free performance but some times.

You dont require any thirdparty software to format your wd my passport with fat or exfat. However, it still can fail to fix disk issues accompanied with some error. Error message when formatting a new drive wd community. How to format or partition an external hard drive for mac. Unmounting a drive is the same thing as ejecting a drive. To unmount a disk image in windows, open my computer, select the disk image, and click eject this disk. The time machine partition was not being recognised but the nontime machine partition was being recognised. Download and install remo recover windows software on your system. Tried to find a solution to my question by looking first to the questions already asked about it, but couldn t find anything suitable, some im trying my luck. I have backed it up and using du tried to erase it by both highlighting the drive identifier and the name in both cases, whether i try to erase disk or set it to erase to one partition, i get a message saying it can t do it because it can t unmount the disk.

If it does then run disk first aid and tell it to repair. In the last month, it has been getting kind of rusty in the sense that i would need to use disk utility to repair it to view the files inside. Aug 19, 2014 tried to erase wd my book for mac external hard drive and it says it can t. Select startup drive, it usually names macintosh hd on the second line of the side bar. How to force a hard drive to unmount for formatting in mac os x. The only thing i can think of is that youre accidentally typing it wrong. Western digital my book problem question and answer dti. New error code when formatting unable to write to the last. Make a note of the disk devsdb displayed underneath the hard disk model, and the partition number in my case number 4. Making a partition on external hard disk is same as the internal hard disk. Some motherboard manufacturers disable unused ports in the bios by default, which is the common reason for the 2nd hard drive not showing up in windows 1087. I tried to erase and partition it with all possible settings but i always get the same error. Formatting the hard drive or partition scheme will recreate a new hfs file structure on the hard.

Then expand the first partition to include the whole drive bottom right hand corner. In disk utility on mac, you can erase and reformat storage devices to use with your mac. Tried to erase wd my book for mac external hard drive and it says it cant. How to force a hard drive to unmount for formatting in mac os. I first tried to initialize the disk using the first option which failed and gave me a cycle redundancy error, then tried the second option and it worked.

Partition issue, couldnt unmount disk error more less. Without moving any wires, i reboot the desktop into knoppix, and the wd my book drive works perfectly. Did you delete the partition before formatting the drive. Install clean hdd in white light my book world edition. Recovering data from a wd mybook live 2tb 3tb or similar april 25. My partition recovery application is most powerful and trustworthy tool to restore deleted or lost drive from an external hard disk. If you want to create multiple partitions on your external hard drive in fact, you should for better file organization, heres a stepbystep guide.

Tried to erase wd my book for mac external hard drive and. Disk images can also be unmounted, which may free up some ram used by the system to mount the image. In du on the partition tab highlight the last partition and click the minus sign. How to fix deep formatting problems with os x drives macissues. It extracts this name because of its book like appearance. Install clean hdd in white light my book world edition summary this tutorial is for white light single disc drives wdh1ncxx000e only for wdh2ncxx000e see footnote 1. Open disk utility select wd drive click view upper left, and click down arrow select main drive not volume, thats whats causing the problem now click erase, enter name, select os extended journaled, and scheme is guid partition map now click erase button. Go to applications utilities to find and launch disk utility and you can find all the hard drives. I wanted to create a smaller partition on each of these drives. I removed the disk and plugged the sata drive in to my win7 machine and realised that the partitions were not readable. Hello deadlyknight and i am sorry to hear about the my book.

Wd passport one terabyte not mounting on macbook pro. Jun 14, 20 at the boot menu, choose disk utility if using an installer disk, pull down the utilities menu to access disk utility go to first aid and verify the disk, then repair if needed now perform the original task that threw the couldnt unmount error. Windows disk management and macs disk utility applications are secure platforms to erase your wd my passport easily. This video show an alternative way to reformat and erase your sd drive when you receive the following error within. Aug, 2010 automatic book community digital dvd edition files forum ftp home ipkg irc kernel links login my mybook mybooklive. Open the disk utility app and highlight your external hard drive.

Then go to the erase tab and select the new expanded partition then click erase. My passport wont format external drives for mac wd community. You cannot unmount your computers main hard drive e. Bought wd 6t external my book to use with time machine. Wd my book partition recovery rescue partition from wd. Similar situation is with wd my book world edition i white light or with my previous hdd that has stopped working. I have a macpro and 4 drives inside it, one of which i needwant to erase. Type sudo diskutil unmountdisk force devdiskx line.

If running the diagnostic with disk utility, they unmount and dissapear again. Does not show in finder but does show as mounted in disk utility, although the partition does not mount. Launch the software by double clicking on its icon, and select recover partitions option on the main screen. Western digital my book partition recovery remo software. Mar 05, 2012 i received partition map check failed because no slices were found. When the list of all disks appears you need to found the disk that you want to force unmount. Seagate external hard drive not showing up in my computer my 320 gb seagate external hard drive is detected but not showing up in my computer.

Next, choose your wd my passport external hard disk from the list of available drives and hit scan button. Western digital hard disk partition magic partition. Before i return the drive, im hoping someone here might have come. Partition failed with the error, could not unmount disk. Are you facing partition failed error couldn t unmount disk on your mac operating system.

My passport wd external hd fails to mount to desktop. Using disk utility to erase diskwon apple community. Sometimes in life it isnt just rtfm, its ftfm the f is for. Do not go blindly with some complex tasks, ensure that you are following standard method while accomplishing those operations. How to format a new internal ssd in macos high sierra tuesday, november 28th, 2017 author. But when i click erase, it says erase process has failed. In this case, you can do nothing but to reformat the disk. I tried zeroing out the entire disk with dd and also with western digitals diag tool. At the boot menu, choose disk utility if using an installer disk, pull down the utilities menu to access disk utility go to first aid and verify the disk, then repair if needed now perform the original task that threw the couldnt unmount error. Am trying to reformat to m 2t my book essential used for time machine os 10. I have recently upgraded to mavericks and time machine stopped then.

The secret to reformatting a western digital wd 1tb my book. Although disk utility should always be tried first, a macs terminal can be used to format the drive in. How to fix deep formatting problems with os x drives. Apr 23, 2020 while scanning forums, we find so many users are bothered with the external hard drive not showing up issue. Recently, some owc customers have reported experiencing a situation where their new ssd will not show up in disk utility in high sierra. Jan 16, 2020 if disk utility failed to repair your external hard drive or other data disk, the above solution is not suitable. Couldn t open disk or the disk couldn t be unmounted. I guess its the issue my book live data volume failed to mount customer service. Wd 1tb unable to mount shares hacking wd mybook world ed. There are many solutions when the user faces these problems. It is password protected which i am able to open in any windows os but i am unable to unlock and mount the hdd in ubuntu 12. I had the same problem with a western digital 2tb my book studio. Therefore, you can easily find right file when you need. This tutorial based on the windows operating system.

My passport wont format external drives for mac wd. Couldnt unmount disk error message usually pops up when you try formatting. Id like to be able to use the passport with the time machine. Back up as many of your files as possible, reformat the disk, and restore your backedup files.

What does it mean to mount or unmount a disk image. External hard drive shows in disk utility, but not in finder before i start, i know that this question has technically been solved before, but not exactly in my case. Simple steps to recover lost partition from wd my passport. Erase and reformat a storage device in disk utility on mac. External hard drive not mounting in macos catalinamojave. Resolve a couldnt unmount disk error in disk utility. If i click the partition tab, i get the spinning color wheel and. Recovering data from a wd mybook live 2tb 3tb or similar. Avoid formatting your wd my passport without backup. How to format a new internal ssd in macos high sierra.