bin, all of the runtime files in dev, and the large system
libraries in lib (this last is only useful to speed software
development, i.e., linking).The easiest way to render a file contiguous in VMS is to use COPY/CONTIGUOUS to copy the file onto itself, and then purge the old version. Various nonstandard utility programs are available commercially which will perform this function automatically. The contents of an entire disk may be rendered contiguous or nearly contiguous by backing up the disk onto tape and then restoring it onto a clean disk.