These messages indicate that your installation medium is corrupt:
Apr 28 19:58:16 xubuntu kernel: [ 883.177802] SQUASHFS error: zlib decompression failed, data probably corrupt Apr 28 19:58:16 xubuntu kernel: [ 883.177805] SQUASHFS error: squashfs_read_data failed to read block 0x31d3d868 Apr 28 19:58:16 xubuntu kernel: [ 883.178380] SQUASHFS error: zlib decompression failed, data probably corrupt Apr 28 19:58:16 xubuntu kernel: [ 883.178382] SQUASHFS error: squashfs_read_data failed to read block 0x31d3d868
Please run the check cd option from the boot menu.
These messages indicate that your installation medium is corrupt:
Apr 28 19:58:16 xubuntu kernel: [ 883.177802] SQUASHFS error: zlib decompression failed, data probably corrupt
Apr 28 19:58:16 xubuntu kernel: [ 883.177805] SQUASHFS error: squashfs_read_data failed to read block 0x31d3d868
Apr 28 19:58:16 xubuntu kernel: [ 883.178380] SQUASHFS error: zlib decompression failed, data probably corrupt
Apr 28 19:58:16 xubuntu kernel: [ 883.178382] SQUASHFS error: squashfs_read_data failed to read block 0x31d3d868
Please run the check cd option from the boot menu.