Hello, I'm WanKeun Jo. Thank you for your response, Adam Lackorzynski .. I attach more info about my system...

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grub's config file.

title Hello_World kernel (hd0,5)/fiasco/bootstrap -comport 1 -serial modaddr 0x02000000 module (hd0,5)/fiasco/fiasco -nokdb module (hd0,5)/fiasco/sigma0 module (hd0,5)/fiasco/roottask module (hd0,5)/fiasco/hello ------------------------------------------------------

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Error Messages

......... 64 Entry I TLB (4K or 4M pages) 64 Entry D TLB (4k or 4M pages) 12K ?ops T Cache (8-way associative 8 KB L1 D Cache (4-way associative, 64 bytes per line) 256 KB L2 U Cache (8-way associative, 64 bytes per line) Freeing init code/data: 16384 bytes (4 pages) EAX 00000000 EBX 00000014 ECX 00000005 EDX f0019e3d ESI 00000001 EDI 00004000 EBP f001ba08 ESP f001b9fc EIP f0012634 EFLAGS 00200046 CS 0008 SS 0010 DS 0023 ES 0023 FS 0023 GS 0023 trap 3 (Breakpoint), error 00000000, from kernel mode Panic: terminated due to trap Return reboots, "k" enters L4 kernel debugger... Rebooting -----------------------------------------------------------------------

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My kernel configuration file http://dongtak.postech.ac.kr/~jowkju/mstsc/globalconfig.out

How can I solve this problem?? Thank you!!!! - WanKeun Jo.