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While performing a System state backup using WSB , the backup fails with following error “There is not enough disk space to create the volume shadow copy on the storage location”

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Symptoms

While performing a System state backup using WSB  , the backup fails with following error

Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\wbadmin start systemstatebackup -backuptarget:f:
wbadmin 1.0 - Backup command-line tool
(C) Copyright 2004 Microsoft Corp.

Starting to back up the system state [31/08/2010 16:23]...
Retrieving volume information...
This will back up the system state from volume(s) System Reserved (100.00 MB),Local Disk(C:) to f:.
Do you want to start the backup operation?
[Y] Yes [N] No y

Creating a shadow copy of the volumes specified for backup...
Summary of the backup operation:
------------------

The backup of the system state failed [31/08/2010 16:23].
Log of files successfully backed up:
C:\Windows\Logs\WindowsServerBackup\Backup-31-08-2010_16-23-21.log

Log of files for which backup failed:
C:\Windows\Logs\WindowsServerBackup\Backup_Error-31-08-2010_16-23-21.log

There is not enough disk space to create the volume shadow copy on the storage location. Make sure that, for all volumes to be backup up, the minimum required disk space for shadow copy creation is available. This applies to both the backup storage destination and volumes included in the backup.Minimum requirement: For volumes less than 500 megabytes, the minimum is 50 mega bytes of free space. For volumes more than 500 megabytes, the minimum is 320 megabytes of free space.
Recommended: At least 1 gigabyte of free disk space on each volume if volume size is more than 1 gigabyte.
There is not enough space on the disk.

The failure occurs even if you have plenty of space on the C: Drive and the shadow storage is set to NO LIMIT.

Cause

The system reserved partition  (100 MB) had files from the 3rd party backup application which was taking up the space. We are not allowed to keep any data in the system reserved volume. You should not have anything else than the files below

31/08/2010  19:40    <DIR>          $RECYCLE.BIN
12/08/2009  06:19    <DIR>          Boot
14/07/2009  02:38           383,562 bootmgr
12/08/2009  06:19             8,192 BOOTSECT.BAK
01/07/2010  14:33    <DIR>          System Volume Information
               2 File(s)        391,754 bytes
               3 Dir(s)      73,777,152 bytes free

Resolution

1. Give a drive letter to the System reserved partition
2. Open a Command prompt with Administrative privileges
3. CD into the drive and try dir /a
4. Locate the unwanted folders and move them or delete them out of the system reserved partition.
5. Try a WBAdmin system state backup.
6. If successful , Remove the Drive letter from the system reserved partition.

 

AUTHOR

Shasank

Support Escalation Engineer – Windows Core

Microsoft Corporation

Comments

  • Anonymous
    April 09, 2014
    And what if the system reserved partition is also used for Recovery whereby the total size is 243 MB with only 25 MB free? This is created by Windows and is not corrupted by third party software.

  • Anonymous
    April 14, 2015
    In my case in the recovery folder I had 300 MB winre.win. This is the Windows Recovery Environment. I assume that I should NOT delete it. What to do?