• Added Purge Cache button to Trash Cache feature.
• Added ability to optimize pre-System 9 drives without needing to boot from alternate drive.
• Corrected compatibility issues.
Additions to 2.5.2
• New Rebuild Volume feature.
• New CheckDrive feature.
• Technical Comparison.
• OS 9 Compatibility.
• New Macintosh model compatibility.
• New repair routines.
Changes in 2.5.2
• New TrashCache defaults.
• Default Trash Cache exceptions.
• Trash Cache bugs fixed.
• Optimization change on boot drive.
• Hours of Use/Manufacture Date change.
Additions to 2.5.2:
Rebuild Volume Feature
TechTool Pro now allows the user to manually rebuild the directory of their drives/volumes. This is utilized by selecting the new REBUILD VOLUME option under the Control menu of the simple interface or by choosing that option at the Volume Structures panel of the Expert interface.
Utilizing the Rebuild Volume feature is a helpful maintenance routine for several reasons:
• It can detect and correct small problems in the drive directory
before they become large problems.
• Rebuilding the directory will create a smaller, optimized
directory that can increase access speed on the drive and
can shorten boot time for the computer.
TechTool Pro 2 has always rebuilt new directories (instead of patching the old one). The program also has always optimized these new directories. However, this was only done when a problem was detected and the user proceeded with the repair. This new feature allows the user to execute a rebuild manually. In previous versions, the ability to manually rebuild the directory was hidden. This was a technical support feature which was accessed by:
1) Opening the Volume Structure panel of the Expert interface.
2) Holding the option key while pressing the RUN button.
3) When prompted for the code, entering 212.82236
When used in conjunction with the new CheckDrive feature, the Rebuild Volume feature should become a valuable tool in your maintenance arsenal.
CheckDrive Feature
The new CheckDrive feature allows the user to preview a volume rebuild or drive repair prior to committing those changes to disk. After the volume structure has been rebuilt or repaired, TechTool Pro will mount a clone of that volume onto the desktop.
The user can then open this "CheckDrive" to inspect the contents and to verify that no problems will occur during repair. Files, folders and applications can be opened on the CheckDrive for inspection (however changes cannot be made since both volumes will be locked at this time). Once the user is satisfied with the results, they can return to TechTool Pro and make the repair permanent which will then unlock the original volume and remove the CheckDrive.
To make comparing the original volume to the CheckDrive volume easier, we've added the new Technical Comparison feature (see below).
Technical Comparison
A new feature that runs in tandem with the new CheckDrive feature is the Technical Comparison feature. As explained previously, the new CheckDrive feature will create a clone volume of what the repaired volume will look like after repairs have been executed. The technical comparison option allows the user to view technical data about the original volume and the CheckDrive volume.
For instance, if the file or folder count on the CheckDrive was different from the original drive, the user may not notice this discrepancy with a cursory inspection of the CheckDrive. By gleaning over the data in the technical comparison; the user can quickly ascertain if there is a potential problem before proceeding with the repair. To help further clarify these changes to the user, the results in the CheckDrive column is color-coded. Black text means that there is no change, green text indicates a favorable change and red text indicates an unusual or suspect change.
OS 9 Compatibility
TechTool Pro is now fully compatible with OS 9.0. It is also "Pure HFS+" ready for when Apple decides to implement the new wrapper-less volume structure.
New Macintosh Model Compatibility
TechTool Pro has been modified and tested to work with the G4 computers, iBook as well as the new line of iMacs introduced in October 1999.
New Repair Routines
TechTool Pro can now repair more drive problems than before. Many new routines have been added.
Changes in 2.5.2
New TrashCache Defaults
The default settings for caching trashed volumes has now been set to:
10 Days
10 Megabytes
100 Files
Many users complained that the prior defaults saved too many files and used too much disk space.
Default Trash Cache Exceptions
There are now a multitude of exceptions pre-installed into TrashCache. This prevents TrashCache from saving common items that most users would not wish to have saved, like browser cache files.
Trash Cache Bugs Fixed
With the first public release of the TrashCache feature, many users found problems and incompatibilities with TrashCache and certain applications. We've made many bug fixes and alterations which should prevent these problems from occurring.
Optimization Change On Boot Drive
Prior versions of TechTool Pro allowed the user to optimize the boot drive and drives with open files. Recent changes in OS 9 has forced us to remove this ability. Now, if you wish to optimize your boot drive; you will need to boot from another volume or from the TechTool Pro CD first.
Hours Of Use/Manufacture Date Change
At the PRAM panel of the Expert interface is a field which shows the user the manufacture date of the machine as well as total hours of use. Many of the new model Macs do not store this information any longer. So now instead of displaying an empty field, the program will display the build date of the ROM file.