- You have a computer that is running Windows 7.
- The computer has a volume that is larger than the system drive on which Windows 7 is installed.
- The volume has no drive letter assigned.
- You try to upgrade the computer to Windows 8.
You may configure a computer in this manner for various reasons. For example, you have a dual-boot system, and you do not want to assign a drive letter to the second system drive. Or, the computer manufacturer configures this volume to store recovery data.
Note This issue does not occur when you perform a clean installation of Windows 8.
When this issue occurs, the following information is logged in the Setupact.log file in the C:\windows\panther directory:
2010-12-10 10:57:33, Info [0x0806e7] MIG Entering Callback_Rollback_ReinitializeAfterReboot
2010-12-10 10:57:33, Info IBSLIB RollbackReinitialize in progress...
2010-12-10 10:57:33, Error [0x06421a] IBSLIB RollbackReinitialize: threw exception.: ArgumentException: Directory "F:\$WINDOWS.~BT\Sources\Rollback" doesn't exists. __thiscall OSRollbackService::CCheckpointImpressario::CCheckpointImpressario(const unsigned short *,class OSRollbackService::CCheckpointSequence *,int)[gle=0x00000003]
2010-12-10 10:57:33, Info IBSLIB RollbackReinitialize finished.
2010-12-10 10:57:33, Error MIG Callback_Rollback_ReinitializeAfterReboot: Failed to re-initialize rollback[gle=0x00000003]
2010-12-10 10:57:33, Info MIG PublishCriticalError: Setup can't continue. Your computer will now restart, and your previous version of Windows will be restored.
Article ID: 2771571 - Last Review: Oct 31, 2012 - Revision: 1