Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

J:\chds\a51site4>chdman copy -i a51site4.chd -o new.chd
chdman - MAME Compressed Hunks of Data (CHD) manager 0.146 (May 21 2012)
Output CHD:   new.chd
Input CHD:    a51site4.chd
Compression:  lzma (LZMA), zlib (Deflate), huff (Huffman), flac (FLAC)
Hunk size:    4,096
Logical size: 2,564,352,000
Compression complete ... final ratio = 27.0%

J:\chds\a51site4>chdman verify -i new.chd -f
chdman - MAME Compressed Hunks of Data (CHD) manager 0.146 (May 21 2012)
Raw SHA1 verification successful!
Overall SHA1 verification successful!

J:\chds\a51site4>chdman info -i a51site4.chd -f
chdman - MAME Compressed Hunks of Data (CHD) manager 0.146 (May 21 2012)
Input file:   a51site4.chd
File Version: 4
Logical size: 2,564,352,000 bytes
Hunk Size:    4,096 bytes
Total Hunks:  626,063
Unit Size:    512 bytes
Total Units:  5,008,500
Compression:  zlib (Deflate)
CHD size:     736,499,597 bytes
Ratio:        28.7%
SHA1:         48496666d1613700ae9274f9a5361ea5bbaebea0
Data SHA1:    49dee1b903a37b99266cc3e19227942c3cf75821
Metadata:     Tag='GDDD'  Index=0  Length=35 bytes
              CYLS:5300,HEADS:15,SECS:63,BPS:512.

J:\chds\a51site4>chdman info -i new.chd -f
chdman - MAME Compressed Hunks of Data (CHD) manager 0.146 (May 21 2012)
Input file:   new.chd
File Version: 5
Logical size: 2,564,352,000 bytes
Hunk Size:    4,096 bytes
Total Hunks:  626,063
Unit Size:    512 bytes
Total Units:  5,008,500
Compression:  lzma (LZMA), zlib (Deflate), huff (Huffman), flac (FLAC)
CHD size:     693,731,795 bytes
Ratio:        27.1%
SHA1:         48496666d1613700ae9274f9a5361ea5bbaebea0
Data SHA1:    49dee1b903a37b99266cc3e19227942c3cf75821
Metadata:     Tag='GDDD'  Index=0  Length=35 bytes
              CYLS:5300,HEADS:15,SECS:63,BPS:512.

J:\chds\a51site4>