WinRAR issues a prompt allowing to cancel or continue if dictionary In a solid archive, such as a collection of software ISO images It also can be efficient for sets of large similar files Increasing the dictionary size can improve the compression ratioįor large files with distant repeated blocks, like virtual machineĭisk images. So we are not limited to 4, 8, 16, 32, 64 seriesĪrchives with dictionaries exceeding 4 GB can be unpacked only Not power of 2 dictionary sizes can be specified for dictionariesĮxceeding 4 GB.

Depending on the amount of physicallyĪvailable memory, dictionary up to 64 GB can be selected. Compression dictionary sizes larger than 1 GB are supportedįor RAR archive format.