2 Replies Latest reply: Jan 25, 2013 11:00 AM by Linc Davis
Beetone Level 2 Level 2 (320 points)

When TM attempts to update the backup (to an external drive)  I get a message "Unable to complete backup. An error occurred while creating the backup folder".

I attempted to verify and repair, if necessary, the external drive using the Disk Utility but got the message "Could not unmount the disk". I don't know if this is a single issue or two unrelated issues.

Can anyone help?


MacBook Pro, OS X Mountain Lion (10.8.2)
  • 1. Re: Disk Utility Unmount
    leroydouglas Level 6 Level 6 (13,850 points)
  • 2. Re: Disk Utility Unmount
    Linc Davis Level 10 Level 10 (118,005 points)

    If you have more than one user account, these instructions must be carried out as an administrator.

    Launch the Console application in any of the following ways:

    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

    ☞ In the Finder, select Go Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

    ☞ Open LaunchPad. Click Utilities, then Console in the icon grid.

    Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left.

    Enter the word "Starting" (without the quotes) in the String Matching text field. You should now see log messages with the words "Starting * backup," where * represents any of the words "automatic," "manual," or "standard." Note the timestamp of the last such message. Clear the text field and scroll back in the log to that time. Select the messages timestamped from then until the end of the backup, or the end of the log if that's not clear. Copy them (command-C) to the Clipboard. Paste (command-V) into a reply to this message.

    If there are runs of repeated messages, post only one example of each. Don't post many repetitions of the same message.

    When posting a log extract, be selective. Don't post more than is requested.

    Please do not indiscriminately dump thousands of lines from the log into this discussion.

     

    Some personal information, such as the names of your files, may be included — anonymize before posting.