How to convert full crash dump to mini dump

I have a Windows 7 BSOD crash dump of almost 900 mb, and I would like to produce a mini dump from it. Is there a tool for that?

Solution 1:

A dump can be converted with WinDbg:

1. Open the full dump
2. .dump c:\debug\dumps\small.dmp

You can automate this task by using cdb instead of windbg and pass commands via the -c "<command>" command line switch, e.g.:

cdb -c ".dump c:\debug\dumps\small.dmp ; q" -z c:\debug\dumps\big.dmp

The q ensures that cdb quits after re-dumping.

Solution 2:

"The resulting MEMORY.DMP file can be quite large. However most of the contents are zeroed memory, so it should compress (With WinRAR for example.) to a much smaller size.
A one gigabyte memory dump will usually compress down to 100-300 megabytes, which will allow for much easier transfer across the network." from here