<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> </head> <body text="#000000" bgcolor="#ffffff"> I have been experimenting over the past few months with Ubuntu 9.10 & 10.4 running entirely from a 4Gb USB memory stick and with 1Gb of persistence (Casper) allocated. I use the Pendrive Linux utility to prepare the memory stick. I tend to find that, after a few updates have been received, Ubuntu refuses to boot from the drive due to various errors. Selecting an older Generic Header can restore the boot therefore it appears to be corruption of the latest updated Header. Can I ask if it is best not to receive updates when choosing to run entirely from a USB drive or if a larger allocation of persistence would help. Many Thanks </body> </html>