I have a system without a hard drive.
I've used the start-up disk creator to copy the 13.04 .iso to the usb. I've used the same USB on multiple systems to install to a second USB stick. On this system, it starts at the typical install screen

GNU GRUB version 2.00-19ubuntu2

I click on Try Ubuntu without installing and I get this

error: invalid cluster 149xxxxxx

and then I get a giant screen of text that looks like

[    30.xxxxxxxx] perf samples too long {350648 > 200000}, lowering kernel.perf event_max sample rate

When I Click "Install" at the Gnu Grub screen, I get the Ubuntu logo with the 5 dots below it and it stalls.

please help

  • Is there anything I can add to this question to get some more feedback?
    – user239853
    Jan 27, 2014 at 3:06

1 Answer 1


I suspect the clue is "error: invalid cluster 149xxxxxx". I had something similar with the corrupted geometry of an SD card recently.

I used testdisk (TestDisk 6.14, Data Recovery Utility, July 2013) written by

Christophe GRENIER http://www.cgsecurity.org

It found and fixed the invalid clusters. But take care that you are talking to the correct device, or you will be very sorry!

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