fixed : my Mac can’t unzip this file I’ve downloaded

Question :

Someone just sent me a file over WeTransfer. After downloading it turns out to be a .zip-file, but when I double-click on it to unzip as usual, the Archive Utility does start the unzipping but ends in an error each time, claiming the .zip-file is broken.

I’m pretty sure the .zip-file isn’t broken… what can I do ?

 

Answer :

Even though OSX/macOS’s built-in Archive Utility is your default choice for zipping and unzipping files and folders, it turn out not to be the best choice for unzipping. (Especially .zip-files created on Windows PCs seem to be problematic every now and then…)

The solution is simple : just use an other app to unzip.

There are various payed alternatives like Stuffit Expander and WinZIP, but there’s no need to buy an app for this as most FREE apps ( like The Unarchiver ) will do just fine.

To install & use another app to unzip do this :

  • download a FREE zip/unzip-app from the Mac AppStore
  • after installation, lookup the .zip-file on your Mac ( it will probably still be in your Downloads folder or on your Desktop )
  • right-click on the .zip-file’s icon and select “Open with…” from the pop-up menu
  • then choose your zip/unzip-app from the list
  • …and wait for the file to unzip

That’s it ! enjoy 😉

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fixed : quickly free up disk space on MacOSX 10.6.8 Snow Leopard

Question :

My son alarmed me today that his ‘good old’ Mac gives a “your startup disk is full” warning at startup. He has our old Intel CoreDuo MacBook that can only run MacOSX 10.6.8 Snow Leopard.

What is the easiest way to free up the much needed harddrive space ?

 

Answer :

There  are various programs that can do the job of identifying which files are cluttering your harddrive and deleting unneeded files.

If you have an older Mac that can not run the latest version of OSX, I would suggest using the DiskWave application to do so, because of 4 reasons :

  1. DiskWave is very small in size (only about 1MB), so you can even install and run it on an extremely full harddrive
  2. DiskWave is able to manage external drives, so you can also run it on a newer/faster/other Mac and connect the problematic Mac as an external drive [ in so called “Target Mode” by restarting the problematic Mac with the T-key pressed and connecting it to the other Mac with a FireWire-cable ]
  3. DiskWave is available for various old versions of MacOSX
  4. DiskWave is FREE to download and use

Using DiskWave is rather straight forward. A quick instruction video can be seen here :

DiskWave instruction video

Getting hold of DiskWave might be problematic however, as the developer’s website (Aymeric Barthe) seems to be down :

Aymeric Barthe website

And the DiskWave app is NOT available from the Mac AppStore either… [ beware not too be fooled into thinking it’s the same as the iDiskWave app ! ]

A secondary problem is that the best available version (DiskWave 0.4) does not support any pre-Core2Duo. For now, all (older) versions of DiskWave can be downloaded here :

download any DiskWave version at Mac.FileHorse.com

Note that DiskWave 0.3.2 is the latest version of DiskWave to run on PowerPC (G3/G4/G5) Macs and 1st generation Intel (CoreSolo and CoreDuo) Macs.

And if those links stop working also, you can download DiskWave 0.3.2 here :

DiskWave_0.3.2

[ !! after downloading, replace the .doc file-extension by .dmg to get the installer !! ]

Enjoy !

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