The error "access beyond end of device" could mean that the USB boot device wasn't created properly or the live system isn't detecting the size of the USB device properly.
Have you tried to put another ISO on the same USB stick? Does this problem happen only with the focal ISO? Have you tried to re-create the USB boot device using a simple 'dd' (for example) instead of startup disk creator? Thanks. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1871917 Title: Unable to boot 20.04 installer on Dell XPS 15 9560 Status in linux package in Ubuntu: Confirmed Bug description: I tried to boot the 20.04 nightly image (focal-desktop-amd64.iso 2020-04-05 11:06 ) as well as an older one (a week ago) on my Dell XPS 15 9560, and I got the same error message each time. The live system performs a filesystem check while showing a progress bar on a screen with dell and ubuntu logo, then the linux console shows with following error: sd 2:0:0:0: [sda] tag#0 access beyond end of device blk_update_request: I/O error, dev sda, sector 30529408 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 sd 2:0:0:0: [sda] tag#0 access beyond end of device blk_update_request: I/O error, dev sda, sector 30529408 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev sda, logical block 3816176 async page read This happens with two different 16GB usb sticks on the Dell XPS 15. They both worked fine on an old samsung netbook. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1871917/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
