From Knoppix Documentation Wiki
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| − | ==== Q: My PC will boot off of the burned disc. It is strange since it loads but then stalls or it loads but is giving me I/O errors. What's going on? ====
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| − | A: You possibly only got a partial download or the download was complete, but corrupt. If this is the case, then the ISO image is defective and the CDR burn of Knoppix is also defective. This is because the data in the missing/changed parts cannot be accessed (sometimes one can even "hear" this because of the sound the CD-ROM drive makes due to repeated read attempts). It appears to work because the directory tree is written at the beginning of the CD and can be correctly read. However, reading the actual contents of the missing/changed parts is impossible, or in other words, accessing the contents fails. If the ISO image was checked & found to be unchanged and not corrupt, then it is possible that the CDR has been improperly burned or a bad piece of CDR media was used. To rule out the possibility of a bad download or a bad burn, some solutions can be found in the section [[#Q:_What_are_these_strange_MD5_files_that_accompany_the_ISO_CD_images.3F]] and [[#Q:_I_have_downloaded_the_ISO_file._How_do_I_burn_the_ISO.3F_How_is_the_ISO_supposed_to_be_burned.3F]].
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| − | Problems are often seen booting with discs that have been burnt at a high speed. If you checked the md5 file and know that you have a good download of the ISO, and you have followed the other instructions for burning the CD '''as an image''', then be sure that you burn the CD at a slow speed, either 4x or as slow as your burner will let you go (some new burners and newer burning software seem to refuse to burn slower than 8x). High speed burns may work on some systems but not on others, so saying that you high speed burn will boot on one system does not offer proof that is is a good burn or should be expected to boot on other systems. There are also [http://www.knoppix.net/forum/viewtopic.php?p=78582#78582 reported cases of the CD working but the boot taking much longer that it should for the system to finish booting]. These problems are resolved by a slow speed burn.
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| − | If the ISO is good and the burn was done properly and at a slow speed, you may need to use one or more "cheat codes" to boot the disc (see the [http://www.knoppix.net/wiki/Cheat_Codes Cheat Code FAQ] for details). In rare cases you may have an optical drive hardware problem (sometimes using CDRW media rather than CDR will help work around this). And be sure that you system is up to Knoppix's minimum requirements. A slow and memory starved system will stall when booting and come up very slowly.
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Revision as of 09:43, 2 September 2005
