Everyone could have murmured or shouted these words them self while they are facing some problem with installing ISO images. Last week i downloaded Fedora 12 DVD -3.0 GB. but i got problem with installation due to corrupted media . I spent one day for downloading that iso image , i dont know why this iso image get corrupted .
any way i tried to find the answer . Finally i found some tips and tricks with downloading ISO images.Reason for corrupted ISO images
- Download Interruption or incomplete download – Use proper download manager or accelerator for downloading ISO images.
- The ISO image might be corrupted while burning with high speed . So use 2x /4x speed in your burning application to avoid this problem
- Forget to check with hash code – All ISO images comes with some hash code for checking its content . user need to check after download it.
Checking ISO images using SHA1SUM or MD5SUM
The first two problem could be easily solved using download manager and setting burning speed . here some information about checking ISO image has been given for Linux users
- Download ISO images , For example : Fedora-12-i386-DVD.iso
- Download the MD5SUM or SHA1SUM hash keys from fedora website – Save the second line into one text file [check.txt]
- Now use sha1sum or md51sum command for checking your ISO image . In terminal type the following command
- If the file has no error then the output of above commands would be
- Else some error message would be displayed .
Note : The format of the checksum file is so important , it has to be like
In our case , the check.txt sould have
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