I'm in Ubuntu 16.04. After booting it get stacked in an all purple screen. If booting in recovery mode I get these messages

VFS: Cannot open root device "mapper/ubuntu--vg-root" or unknown-block(0,0): error -6 Please append a correct "root+" boot option; here are the available partitions: Kernel panic - not syncing: VFS: unable to mount root fs on unknown-block(0,0) CPU: 3 PID: 1 Comm: swapper/0 Not tainted 4.13.0-45-generic #50~16.04.1-Ubuntu Hardware name: Dell Inc. Inspiron 3521/0010T1, BIOS A14 07/31/2015 Call trace: dump_stack+0x63/0x8b panic+0xe4/0x24d mount_block_root+0x1fd/0x2ac mount_root+0x38/0x3a prepare_namespace+0x13f/0x194 kernel_init_freeable+0x212/0x23b ? rest_init+0xc0/0xc0 kernel_init+0xe/0x101 ret_from_fork+0x35/0x40 Kernel Offset: 0x3d000000 from 0xffffffff81000000 (relocation range: 0xffffffff8000000-0xffffffbffffff) --[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

  • askubuntu.com/questions/162075/… . Purple/ black same fix – Panther Aug 29 '18 at 17:52
  • Second that error is because the root partition can not be found. Boot a live usb and run boot repair – Panther Aug 29 '18 at 17:53
  • Booring from live usb says "Booting kernel failed: Invalid argument" – imabug Sep 3 '18 at 19:57
  • Did you checksum the iso? – Panther Sep 3 '18 at 20:00

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