Archived:Programmatic formatting of the memory card (E:) fails with KErrInUse (Known Issue)

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Formatting a memory card using RFormat API's Format function fails with KErrInUse in some S60 3rd Edition, FP1 devices. The reason for this could be an application constantly trying to access the memory card.

Article Metadata

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Tested with

Devices(s): Nokia N95, Nokia N82

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Compatibility

Platform(s): S60 3rd Editon FP1

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Article

Created: User:Technical writer 1 (03 Sep 2008)

Last edited: hamishwillee (19 Jun 2012)

How to reproduce

The following code fails in the Nokia N95 and the Nokia N82 with KErrInUse.

 _LIT(KDriveE,"E:");
 RFs fs;
 User::LeaveIfError(fs.Connect());
 RFormat format;
 TInt tracksRemaining;
 User::LeaveIfError(format.Open(fs,KDriveE,EHighDensity,tracksRemaining));
 while (tracksRemaining)
   {		
   User::LeaveIfError(format.Next(tracksRemaining));
   }
 format.Close();

Solution

To ensure that no other application is accessing the memory card, dismount the memory card and remount it after a while (1 second) before formatting it.

 _LIT(KDriveE,"E:");
 _LIT( KFSName, "Fat" );
 RFs fs;
 RFormat format;
 TInt tracksRemaining;
 TRequestStatus stat;
 User::LeaveIfError(fs.Connect());
 fs.NotifyDismount(EDriveE, stat, EFsDismountForceDismount);//Dismount the drive
 User::WaitForRequest(stat);
 User::After(1000000); //we have to wait until clients have received notification about card dismount
 fs.MountFileSystem(KFSName,EDriveE);//Mount drive back in
 User::LeaveIfError(format.Open(fs,KDriveE,EHighDensity,tracksRemaining));
 while (tracksRemaining)
  {
  User::LeaveIfError(format.Next(tracksRemaining));
  }
 format.Close();