1.    06 May 2016 #1
    Join Date : Dec 2015
    Posts : 11
    win 10 pro

    "The last backup did not complete successfully" Help!


    I keep getting the above error when trying to make a backup of my files from the C:\ to my separate A:\ drive. My A:\ has folders and files on it-could this be causing the failure? I have more than enough room to allow for a backup.
    Any insight will be greatly appreciated.
      My ComputerSystem Spec
  2.    06 May 2016 #2
    Join Date : Apr 2015
    Posts : 13,001
    W10Prox64

    Quote Originally Posted by boidsonly View Post
    I keep getting the above error when trying to make a backup of my files from the C:\ to my separate A:\ drive. My A:\ has folders and files on it-could this be causing the failure? I have more than enough room to allow for a backup.
    Any insight will be greatly appreciated.
    Hi.
    I have to ask - why is your backup designated as A? A drives were the floppies used years ago. Normally, an external drive would be E, F, G etc. What media are you using for your backup drive? What program are you using to create the backup?
      My ComputerSystem Spec
  3.    07 May 2016 #3
    Join Date : Dec 2015
    Posts : 11
    win 10 pro
    Thread Starter

    Quote Originally Posted by simrick View Post
    Hi.
    I have to ask - why is your backup designated as A? A drives were the floppies used years ago. Normally, an external drive would be E, F, G etc. What media are you using for your backup drive? What program are you using to create the backup?
    I had several thumb drives assigned letters so I chose A: for this external HDD, though it is mounted internally of the case.

    I am using the Win 10 backup and restore feature (though the description says Win 7)
    Thanks.
      My ComputerSystem Spec
  4.    07 May 2016 #4
    Join Date : Apr 2015
    Posts : 13,001
    W10Prox64

    Quote Originally Posted by boidsonly View Post
    I had several thumb drives assigned letters so I chose A: for this external HDD, though it is mounted internally of the case.

    I am using the Win 10 backup and restore feature (though the description says Win 7)
    Thanks.
    Okay. I will make a recommendation here: Don't trust the in-built backup feature. Too many times we have seen it fail.

    Most of the members here use a free program called Macrium Reflect. You make an "image" of your entire hard drive, to a completely separate disk. It is compressed, so it takes up about one-half to two-thirds of the used space of the drive you are backing up. So, if your hard drive is 100GB, your backup will be about 50-65GB. Makes sense? There is an option you can set to perform a verification when making an image. That way, you know you have a good one. And, I usually keep at least 3 images at all times, just in case one goes bad for some reason. You can set it up for auto-imaging on a schedule as well. It has the function to make recovery media, which you boot the system to, and put the image back. This comes in handy when your hard drive completely fails and you have to buy a new one.

    If you have any questions or need any help with it, just ask. Really, this is a much better way to protect yourself.
      My ComputerSystem Spec
  5.    07 May 2016 #5
    Join Date : Apr 2016
    Manchester, U.K.
    Posts : 573
    Windows 10 Pro 64bit

    Quote Originally Posted by boidsonly View Post
    I had several thumb drives assigned letters so I chose A: for this external HDD, though it is mounted internally of the case.

    I am using the Win 10 backup and restore feature (though the description says Win 7)
    Thanks.
    Is the drive connected to USB 3 port?
    I have the same problem with an external HD using USB 3 but using a USB 2 hub it works fine.
    I am now moving over to Macrium reflect to image & clone Windows 10.
      My ComputerSystem Spec
  6.    08 May 2016 #6
    Join Date : Jun 2015
    Posts : 141
    windows 10

    when I used Windows backup, for some unknown reason, if I have another account and it is Admin. and there are files that are just for the user. This is where I get my error. So for a complete backup, it will not work. Recommend you EaseUS todo backup, do excellent job for this problem.
      My ComputerSystem Spec
  7.    08 May 2016 #7
    Join Date : Oct 2013
    NW Florida
    Posts : 9,730
    Windows 10 Pro and Windows 10 Pro Insider

    Windows Backup is less flexible than many of the other programs. Many here use the free Macrium which is simple and quite reliable. I would give that a try. You can do much more with it than Windows built in Backup.
      My ComputersSystem Spec
  8.    20 Aug 2017 #8

    I'm having issues where I'm receiving "latest backup did not complete successfully" errors. It's saying the specified backup disk could not be found. However, I can browse to it and write files to it locally. I'm writing to a Synology NAS.

    I saw where the admin account being backed up causes issues. Did MSFT fix this yet, or must I sign out of an administrator account to get it to back up? The file history features writes to the NAS without difficulty.
      My ComputerSystem Spec
  9.    20 Aug 2017 #9
    Join Date : Oct 2013
    A Finnish expat in Germany
    Posts : 13,130
    Windows 10 Pro

    Quote Originally Posted by boidsonly View Post
    I had several thumb drives assigned letters so I chose A: for this external HDD, though it is mounted internally of the case.

    I am using the Win 10 backup and restore feature (though the description says Win 7)
    Thanks.
    I am not saying this is the reason for your errors although it might be:

    Drive ID letters A and B should not be used for any other devices than for what they are reserved for, removable media like old floppy or ZIP drives and such. They should in no case be used for fixed drives like HDD and SSD (internal or external), nor should they be used for USB flash drives.

    Remnants from legacy floppy disk era, Windows still treats them as reserved for removable media.
      My ComputerSystem Spec

 


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