Introduction
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Before you burn your CD, first you are strongly advised to verify the Kubuntu ISO file, kubuntu*.iso. It is important to verify the kubuntu*.iso file you downloaded to ensure that it is:
Where to get the official MD5 hash codes
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The MD5 hash codes for each Kubuntu ISO file are listed in the UbuntuHashes article on the Community Ubuntu Documentation site. Use a checksum program to generate the MD5 hash code for the kubuntu*.iso file. Then compare the code you generated against the code listed in the UbuntuHashes article.
You can also find the MD5SUMS file hosted by Ubuntu mirror sites on the Complete Download Options List page.
Step by step
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How to generate the MD5 hash code
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Using md5sum:
Using cfv (Commandline File Verifier):
K3b CD & DVD Burning program will automatically generate the MD5 hash code of kubuntu*.iso when you use the Burn CD Image function. You can compare the MD5 hash code generated by K3b against the code listed in the UbuntuHashes article. Example 1, Example 2.
Checksum programs for Windows
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Caution: It is good practice to check all Windows programs for viruses and spyware immediately after downloading. I never download anything on a Windows computer without up to date anti-virus software.
Checksum programs for all OSes (Java)
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After you burn the CD
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After you burn the Kubuntu CD you need to verify that the disc burned without errors. The simplest way is to boot the Kubuntu CD and use the built in integrity check function as shown below.
Alternatively you could try GreyGeek's method to check the CD against the official MD5 hash code from the command line.
More information
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Conclusion
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Please do post your constructive comments about this HOW TO below! Seriously, I really want to know
History
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Before you burn your CD, first you are strongly advised to verify the Kubuntu ISO file, kubuntu*.iso. It is important to verify the kubuntu*.iso file you downloaded to ensure that it is:
- the authentic (untampered) file as released by the Kubuntu team
- intact (complete) and not corrupted during the download process
Where to get the official MD5 hash codes
_________________________________________________
The MD5 hash codes for each Kubuntu ISO file are listed in the UbuntuHashes article on the Community Ubuntu Documentation site. Use a checksum program to generate the MD5 hash code for the kubuntu*.iso file. Then compare the code you generated against the code listed in the UbuntuHashes article.
You can also find the MD5SUMS file hosted by Ubuntu mirror sites on the Complete Download Options List page.
Step by step
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- Download the Kubuntu ISO with the method you trust from the official Kubuntu download page. Save the kubuntu*.iso to an easy to find location (e.g. your home folder, Desktop, or Documents folder).
- Generate the MD5 hash code of the downloaded kubuntu*.iso file using md5sum, or the checksum program you trust.
- Compare the MD5 code you just generated against the code listed in the UbuntuHashes article. It is best to copy and paste the generated MD5 code into your web browser's Find box (Edit -> Find or Ctrl+F) to avoid errors.
How to generate the MD5 hash code
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Using md5sum:
Code:
$ md5sum -b kubuntu-9.04-desktop-i386.iso 537a22de1342d5671b7e0070f66a6076 *kubuntu-9.04-desktop-i386.iso
Code:
$ cfv -v -C -t md5 -f - kubuntu-9.04-desktop-i386.iso 537a22de1342d5671b7e0070f66a6076 *kubuntu-9.04-desktop-i386.iso kubuntu-9.04-desktop-i386.iso : OK (537a22de1342d5671b7e0070f66a6076) -: 1 files, 1 OK. 10.622 seconds, 67080.9K/s
Checksum programs for Windows
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Caution: It is good practice to check all Windows programs for viruses and spyware immediately after downloading. I never download anything on a Windows computer without up to date anti-virus software.
- Recommended: Nullriver Software's WinMD5Sum is probably the easiest to use, with a very simple and clean GUI. It is freeware, and there is also a PortableApps.com version. Example by Psychocats
- cfv (Commandline File Verifier) has a Windows version, is GPL, and it's what I use.
- SlavaSoft FSUM is a very flexible, fast, freeware command line checksum generator. I used it a long time before discovering cfv. Examples
- Recommended by AboveTheLogic: HashCalc is a freeware GUI implementation of SlavaSoft's QuickHash library. Example
- MD5SUM.EXE by etree.org is a rudimentary implementation of md5sum for the Windows command line. I used it a few times long ago.
- RapidCRC can generate MD5 codes, is free of cost, and is GPL. Examples
- MD5summer is a GPL program with a nice GUI for creating MD5 files. Example
- FreeCommander is a very powerful freeware file manager for Windows which can create MD5 files. It has a very fancy, customizable GUI with more functions than most users ever need. I used it for several years. FreeCommander Portable and U3
- Not endorsed: FREE Misc. Utilities on NONAGS has some checksum programs. Decide for yourself whether you trust them.
Checksum programs for all OSes (Java)
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- Recommended by AboveTheLogic: 20G Hashgen
After you burn the CD
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After you burn the Kubuntu CD you need to verify that the disc burned without errors. The simplest way is to boot the Kubuntu CD and use the built in integrity check function as shown below.
Alternatively you could try GreyGeek's method to check the CD against the official MD5 hash code from the command line.
More information
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- UbuntuHashes article in Community Ubuntu Documentation
- HowToMD5SUM article in Community Ubuntu Documentation
- How to md5sum check the burned ISO CD forum topic by GreyGeek for verifying the CD after you burn
- How To MD5SUM, 'buntuHashes, Burning Iso Howto forum topic by Rog131
- Downloading and burning an ISO of Ubuntu article by Psychocats
- bit torrent download won't cksum forum topic
- md5sum article on Wikipedia
Conclusion
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Please do post your constructive comments about this HOW TO below! Seriously, I really want to know
History
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- Added Windows programs, changed the title and message icon, added section headings, fixed spelling errors, and generally cleaned things up.
- Added link to HashCalc, thanks to AboveTheLogic.
- Removed Wikipedia checksum article, and linked to Wikipedia md5sum article instead. (The md5sum article links to all the related articles anyway.) Added the history heading for this list.
- Added 20G Hashgen, thanks to AboveTheLogic. Consistency cleanup.
- Remove excess verbage. Link to Rog131's article.
- Tidy up section headings and title. Properly credit Rog131. Remove some unneeded words. Consistency cleanup.
- Link to GreyGeek's article
- Mention the built in CD integrity check and provide an example image
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