Imaging Utilities and Components 471novdocx (en) 7 January 2010Compressing an Unopened Image FileUse this dialog box to set compression options to quickly compress an image file without waiting forthe file to fully load into Image Explorer.To quickly compress an image file:1 Click Tools > QuickCompress.2 Fill in the fields:Image File to Compress: Specify or browse to an existing imaging file to compress.Save Compressed Image As: Specify the location and filename under which to save theimage, or click the browse button next to this field to locate and select it.Compression Level: Specify an image-compression level: Compress for Speed: Takes the least amount of time to compress but creates the largestcompressed image file. Balanced Compression: Represents a compromise between compression time and imagefile size. This option is used by default when an image is created. Compress for Size: Creates the smallest image file but takes longer to compress.3 Click Compress to compress the image file using the settings you specified.31.7.2 Splitting an ImageYou can split an image file into separate files so that you can span the entire image across severalCDs or DVDs.When you split a device image and span it across several CDs or DVDs, you are essentially creatinga base image on the first CD or DVD. The remaining CDs or DVDs are add-on images.Because images are split by placing individual files into different images, an image cannot be split ifit contains any single file that is larger than the specified maximum file size.To restore a device image that has been spanned across several CDs or DVDs you should restore thefirst CD or DVD before restoring the remaining CDs or DVDs containing the add-on images. Formore information, see “Manually Putting an Image on a Device” on page 420.Restoring split Images is done using bundles, such as restoring a base plus add-ons. For moreinformation, see “Creating an Add-On Image” on page 419.To split an image:1 Click Tools > Split Image.2 Fill in the fields:Image File to Split: Enter or browse to an existing base image file to split.Directory to Store Split Images: Specify the location and filename under which to save thesplit-image files, or click the browse button next to this field to locate and select it.The split-image files are named automatically. For example, if you enter image.zmg in theImage File to Split field, the first split-image file is named image_base.zmg, the second file isnamed image_a1.zmg, the third file is named image_a2.zmg, and so forth. Theimage_base.zmg file contains files that allow the device to boot to the operating system. Theadd-on images (image_a1.zmg, image_a2.zmg, etc.) contain additional files.
