The following file types are not included by default in Baku for safety reasons. To improve the amount of freed space you can include them after making sure they don't include any file important to you.

Temporary files

*.^
*.__*
*._dd
*._detmp
*._dtmp
*._mp
*.---
*.??$
*.?$?
*.@@@
*.*~* (!Use with caution, can be a file recovery part)
*.$$$
*.$db
*.00
*.000
*.db$
*.dd_
*.temp
*.tmp
*chklist.* (Temporary file created during setup)
~*.* (!Use with caution, can be a file recovery part)
mscreate.dir (Temporary directory information)

Backup files

*.~df (Backup of Delphi project file)
*.~dfm (Backup of Delphi project file)
*.~dp (Backup of Delphi project file)
*.~dpr (Backup of Delphi project file)
*.~pa (Backup of Delphi project file)
*.~pas (Backup of Delphi project file)
*.b~k (Generic backup file)
*.bak (Generic backup file)
*.bkf (Backup file generated from Windows backup and recoverable using it)
*.bki (IBM BookManager Backup Index)
*.bks (Windows 2000/XP backup selection file. Used to record backup selections for NTBackup utility)
*.bmk (Bookmark file used by some old programs)
*.cln (Backup configuration file. Used by some versions of Windows during install)
*.daO (Windows Registry Backup. !Use with caution, can be a Duplicator CD File!)
*.jbf (Paint Shop Pro Browser Cache)
*.oca (Microsoft Visual Basic cache file for a correspondingly named .ocx file. Contains extended type library information and cache information for a customer control file. Automatically recreated)
*.old (Generic old or backup file. Typically a .old file represents an earlier version of a file)
*.prv (Backup file !Use with caution, can be used by ClarisWorks, psiMail, SecretAgent Private Key File!)
*.qdk (Quarterdeck QEMM File. Backup of startup files created by Optimize (QEMM)
*.sik (MS Word backup file)
*.syd (Backup file made by QEMM/SysEdit)
*.twain???.mtx (Twain backup file)
*.umb (MemMaker Backup Archive)
*.wbk (MS Word auto-backup file)
~ (Old backup of the Outlook Express address book)
thumbs.db (Thumbnail file for image preview in Windows)

Error files

*.dmp* (Dump file. Typically a binary file)
*.err (Error log. Various programs, many associated with install programs)
file*.chk (CHKDSK/SCANDISK Output. File fragments cleaned from the disk)
*.hdmp (WinXP Trouble Report. Uncompressed version of a .mdmp file)
*.mdmp (WinXP Trouble Report. Compressed version of an .hdmp file. The extension is added to file to be sent to Microsoft)
error*.txt (!Use with caution!)
failure*.txt (Error log)

Log files

*.log (Various log files, !Use with caution!)
*log.txt* (Various log files, !Use with caution, may be a changelog or a valuable text file!)
*.sqm (Windows Live Messenger Log File !Use with caution, can be an Operation Flashpoint Mission)
History.rdf (History file for the Firefox NeedleSearch extension)
log.rdf (Log file for the Firefox NeedleSearch extension)
sched*.txt (Scheduled tasks log)
suhdlog.dat (Contains backup copies of the original boot sectors of the machine and the system files. !Use with caution, used by Windows if you uninstall it!)

Intermediate files

*.aps (Microsoft Visual C++ file, binary version of the resource file, generated by the resource editor)
*.idb (MS-Dev intermediate file)
*.ilk (Microsoft Link : incremental linker info)
*.ncb (Non-compressed browse file, generated by Visual Studio. Holds information for ClassView, IntelliSense and the WizardBar. Automatically recreated)
*.pch (Microsoft Visual Studio precompiled header file (for C and C++)
*.pdb (Program Database File (Microsoft Visual Studio). Holds debugging and project state information. Automatically recreated. !Use with caution, can be a Palm portable document format!)
*.sbr (Source Browser Support File (Microsoft Visual Studio). Generated for each C/C++ source file)
*.vbw (Visual Basic Project Workplace)

Outdated files

*.ffa (Fast find file. If Fast Find is not used then this file can be safely deleted (Win 9x)
*.ffl (Fast find file. If Fast Find is not used then this file can be safely deleted (Win 9x)
*.ffo (Fast find file. If Fast Find is not used then this file can be safely deleted (Win 9x)
*.ffx (Fast find file. If Fast Find is not used then this file can be safely deleted (Win 9x)
*.nch (Outlook Express v4 internet news items, not used in v5. !Use with caution, can be an On-Hold music/audio file!)
packing.lst (Packing list file. Used by some old dos programs)

Temporary help file search data (speeds up access to the particular help file the next time you open it, delete if you need extra space)

*.chw (HTML Help general index)
*.ftg (Windows Help full text search group file)
*.fts (Windows Help full text search index. For each .fts file there is typically a corresponding .gid file. !Use with caution, can be a graphics and data file for Flexible Image Transport System)
*.gid (General index of help files)

Various text files you may not need

*.1st (Usually README.1st text file. Contains advices for the first time you use the program)
*.diz (Description file for Bulletin boards. Usually is file_id.diz)
order.* (Ordering information for sharewares)
vendor.* (Ordering information for sharewares)

Excluded files

*change*.* (Changelog, gives informations about program changes)
*nstall.log (Installation log, used for deinstallation)
*unst.log (Installation log, used for deinstallation)
data.bak (Useful data backup)
doit.log (WinHTTrack site downloading information)
hts-log.txt (WinHTTrack site downloading information)
setup*.log (Installation log, used for deinstallation