I only have a HP printer and why I need to install a file for all the HP printers drivers 590MB??? if normally the size of my file should be 5MB. some one could me help to avoid installation of 590MB for my new mountain lion software???

The installation file's size is not an indication of the size of the actual installation. Many manufactures use unified files for distribution, to cover a range of products. Normally only necessary files are actually installed.

If you go to http://support.apple.com/downloads and locate the HP Printer Drivers installer, you will find that it is 473.4 MB (for version 2.11). If you install this, it will install the full set of drivers for every model of HP printer that is supported by the drivers distributed through Apple. The disk space occupied once installed will probably be larger than the download, since the downloaded file is compressed.

On the other hand, if you have an HP printer connected and you use Software Update (or the Update tab in App Store), that should offer you a much smaller set of HP drivers, which are only applicable to your printer (and possibly a few similar ones). These updates are typically only tens of megabytes rather than hundreds of megabytes.

If Software Update doesn't offer you any HP drivers then it either thinks you have the latest drivers installed already, or the printer model is not supported by the drivers available from Apple.

This article lists all of the printer models for which Apple distributes the driver:

http://support.apple.com/kb/HT3669

Hi QR,

I am intersted in buying a second hand DJ 100. Could you please tell me if you got it to work with Mountain Lion and if so, how?

Thanks in advance,

Dot