Old thread I too have been having problems with this in the future...

It Seems to run and not show any error messages...

Command i am running: Setup /ACTION=REBUILDDATABASE /INSTANCENAME=MSSQLSERVER /SQLSYSADMINACCOUNTS=ecljagaf /sapwd=Password /SQLCOLLATION=SQL_Latin1_General_CP1_CI_AS

I am running this from this directory: C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Release

I have also tried mounting the drive and running the command from there.

any help would be appreciated.