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I have 64-bit dell N5110 laptop. During Ubuntu 14.04 installation, I received this error. I know the error is common, but I didn't find an answer, so please read below.


[Errno 5] Input/output error

This is often due to a faulty CD/DVD disk or drive, or a faulty hard disk. It may help to clean the CD/DVD, to burn the CD/DVD at a lower speed, to clean the CD/DVD drive lens (cleaning kits are often available from electronics suppliers), to check whether the hard disk is old and in need of replacement, or to move the system to a cooler environment.


I've had this error before, but back then I had problem with Ubuntu .iso file (checksum wasn't correct). However, this time the checksum is correct. Moreover, I used both Ubuntu (Start-up app) and Windows (Universal-USB-Installer) ways for making bootable usb. Both of them are giving me this error. If it means something, in "md5sum.txt" file on bootable usb the hash doesn't match with the correct on.

Any suggestions?

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maybe you will be surprised like I am. I recently encountered the same problem while trying to install ubuntu 14.04 on my other laptop (i3 Dell-Vostro). What I did is; I used Universal-USB-installer to create a bootable usb, then tried installing, it didn't work, I've been reading lots of suggestions here with no luck. Solution - I simply decided to use another software which is rufus (https://rufus.akeo.ie/) to create a bootable usb, then it worked, just like that. I am surprised, as simple as that. So now I think that Universal-USB-installer didn't copy all necessary files,I hope this is helpful.

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