I tried several ways but still no help. The following are the output (stock Centos 6 2.6.32-71.29.1.el6.x86_64 kernel), grub works fine and it located kernel and initial ramdisk. but kernel booting faied at the very beginning... Any suggestions are more than appreciated. -------------------------------------------------- 2011-11-23T17:19:21+0000 Xen Minimal OS! start_info: 0x1890000(VA) nr_pages: 0x1e0000 shared_inf: 0xb2cea000(MA) pt_base: 0x1893000(VA) nr_pt_frames: 0x11 mfn_list: 0x990000(VA) mod_start: 0x0(VA) mod_len: 0 flags: 0x0 cmd_line: root=/dev/sda1 ro 4 stack: 0x94f860-0x96f860 MM: Init _text: 0x0(VA) _etext: 0x6000d(VA) _erodata: 0x78000(VA) _edata: 0x80b00(VA) stack start: 0x94f860(VA) _end: 0x98fe68(VA) start_pfn: 18a7 max_pfn: 1e0000 Mapping memory range 0x1c00000 - 0x1e0000000 setting 0x0-0x78000 readonly skipped 0x1000 MM: Initialise page allocator for 27a0000(27a0000)-1e0000000(1e0000000) MM: done Demand map pfns at 1e0001000-21e0001000. Heap resides at 21e0002000-41e0002000. Initialising timer interface Initialising console ... done. gnttab_table mapped at 0x1e0001000. Initialising scheduler Thread "Idle": pointer: 0x21e0002010, stack: 0x36f0000 Initialising xenbus Thread "xenstore": pointer: 0x21e00027c0, stack: 0x3700000 Dummy main: start_info=0x96f960 Thread "main": pointer: 0x21e0002f70, stack: 0x3710000 "main" "root=/dev/sda1" "ro" "4" vbd 2049 is hd0 ******************* BLKFRONT for device/vbd/2049 ********** backend at /local/domain/0/backend/vbd/162/2049 Failed to read /local/domain/0/backend/vbd/162/2049/feature-barrier. Failed to read /local/domain/0/backend/vbd/162/2049/feature-flush-cache. 20971520 sectors of 512 bytes ************************** vbd 2064 is hd1 ******************* BLKFRONT for device/vbd/2064 ********** backend at /local/domain/0/backend/vbd/162/2064 Failed to read /local/domain/0/backend/vbd/162/2064/feature-barrier. Failed to read /local/domain/0/backend/vbd/162/2064/feature-flush-cache. 880732160 sectors of 512 bytes ************************** vbd 2080 is hd2 ******************* BLKFRONT for device/vbd/2080 ********** backend at /local/domain/0/backend/vbd/162/2080 Failed to read /local/domain/0/backend/vbd/162/2080/feature-barrier. Failed to read /local/domain/0/backend/vbd/162/2080/feature-flush-cache. 880732160 sectors of 512 bytes ************************** [H[J GNU GRUB version 0.97 (7864320K lower / 0K upper memory) [m[4;2H+-------------------------------------------------------------------------+[5;2H|[5;76H|[6;2H|[6;76H|[7;2H|[7;76H|[8;2H|[8;76H|[9;2H|[9;76H|[10;2H|[10;76H|[11;2H|[11;76H|[12;2H|[12;76H|[13;2H|[13;76H|[14;2H|[14;76H|[15;2H|[15;76H|[16;2H|[16;76H|[17;2H+-------------------------------------------------------------------------+[m Use the ^ and v keys to select which entry is highlighted. Press enter to boot the selected OS, 'e' to edit the commands before booting, or 'c' for a command-line.[5;78H [m[7m[5;3H CentOS (2.6.32-71.29.1.el6.x86_64) [5;75H[m[m[6;3H [6;75H[m[m[7;3H [7;75H[m[m[8;3H [8;75H[m[m[9;3H [9;75H[m[m[10;3H [10;75H[m[m[11;3H [11;75H[m[m[12;3H [12;75H[m[m[13;3H [13;75H[m[m[14;3H [14;75H[m[m[15;3H [15;75H[m[m[16;3H [16;75H[m[16;78H [5;75H[23;4H The highlighted entry will be booted automatically in 5 seconds. [5;75H[23;4H The highlighted entry will be booted automatically in 4 seconds. [5;75H[23;4H The highlighted entry will be booted automatically in 3 seconds. [5;75H[23;4H The highlighted entry will be booted automatically in 2 seconds. [5;75H[23;4H The highlighted entry will be booted automatically in 1 seconds. [5;75H[H[J Booting 'CentOS (2.6.32-71.29.1.el6.x86_64)' root (hd0) Filesystem type is ext2fs, using whole disk kernel /boot/vmlinuz-2.6.32-71.29.1.el6.x86_64 ro root=/dev/sda1 rhgb quiet initrd /boot/initramfs-2.6.32-71.29.1.el6.x86_64.img close blk: backend at /local/domain/0/backend/vbd/162/2049 close blk: backend at /local/domain/0/backend/vbd/162/2064 close blk: backend at /local/domain/0/backend/vbd/162/2080 PCI: Warning: Cannot find a gap in the 32bit address range PCI: Unassigned devices with 32bit resource registers may break! PCI: Fatal: No config space access function found Boot has failed, sleeping forever. ________________________________ From: Robinson Tiemuqinke <hahaha_30k at yahoo.com> To: CentOS mailing list <centos at centos.org> Sent: Tuesday, November 22, 2011 3:35 PM Subject: [CentOS] EC2 compatible kernel for centos 6? Hi all, I'm just scrambling to collect clues to build an Amazon AWS AMI based on Centos 6. the AWS PV-GRUB kernel loads my kernel but failed immediately. I'm using stock Centos 6 kernel 2.6.32-71.29.1.el6. and the kernel seems have xen? support? My questions are: 1, Are the centos 6 stock kernels, like kernel-2.6.32-71.29.1.el6.x86_64, EC2 compatible? 2, If the answer to the above #1 question is NO, the are the centos plus kernels, like kernel-2.6.32-71.29.1.el6.centos.plus.x86_64, EC2 compatible? 3, If the answers to both above are 'NO', then Are there any instructions to build a EC2 kernel based on kernel source RPMs? Any help are greatly appreciated. --Tie _______________________________________________ CentOS mailing list CentOS at centos.org http://lists.centos.org/mailman/listinfo/centos