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Hi, I've discovered an error in using the md5sum command to create a hash for a CD. I was trying to burn a CD, from an ISO image of the Solaris CD1 that I downloaded from Sun's Download Center. Before the burning process, I've calculated the md5 hash for the ISO image using both Cygwin's md5sum command and ISOBuster's (that allows also to make the hash for 2048 and 2352 bytes/block). For Cygwin's md5sum I used the command: %> md5sum sol-10-GA-x86-v1-iso.iso The results for the hashes are below: 3838f0e0560b4a1d9dc43a8cf754965a *sol-10-GA-x86-v1-iso.iso (with Cygwin's md5sum) 3838f0e0560b4a1d9dc43a8cf754965a *CD.tao (with ISOBuster - 2048 bytes/block) d1e3c9bbfc16cf0922d94afeeda2e756 *CD.bin (with ISOBuster - 2352 bytes/block) So there is an agreement with for the hash (with the 2048 setting). After burning the CD, I wanted to check the integrity of the burn so I've run again ISOBuster and Cygwin's md5sum. For Cygwin I've used the command: %> md5sum /dev/scd0 and I got the following results: eeba689f88d7a28e4ef54099db5c429c */dev/scd0 (with Cygwin's md5sum) 3838f0e0560b4a1d9dc43a8cf754965a *CD.tao (with ISOBuster - 2048 bytes/block) d1e3c9bbfc16cf0922d94afeeda2e756 *CD.bin (with ISOBuster - 2352 bytes/block) As someone can see ISOBuster reports that the burn process was ok, the original ISO image and the created CD have the exact same hashes (for both 2048 and 2352 bytes/block). But the CD hash from Cygwin is different from the ISO hash. I have used the same process in the past with no problems so I am not sure what is going on here. I am attaching also the cygcheck.out file. __________________________________ Start your day with Yahoo! - Make it your home page! http://www.yahoo.com/r/hs
Attachment:
cygcheck.out
Description: 3924260979-cygcheck.out
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