> chdman createraw -i old.chd -o new.raw -hs 4096 -us 512 -c none -f
That's wrong. For writable MESS CHDs you now use createhd with the "-c none" parameter. > Another problem is, that CHDMAN always created a compressed RAW file (345 MB and not > 512). I can't open it with WinImage
CHDMAN now doesn't write out sectors that are all zeroes. Thus, uncompressed CHDs are often much smaller than they used to be; this does not indicate they are compressed however, and writing to the CHDs inside MESS will cause them to grow appropriately.
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