Has anybody had some experience doing this? Does unusual_devs.h need to be formatted in some specific way? (Click on the entry to see the stuff below the cut tag) <lj-cut> I have added this: /*Some driver details for running USB Hard Drives */ UNUSUAL_DEV( 0x05e3, 0x0702, 0x0000, 0x9999, "Genesys Logic", "USB IDE Hard Disk", US_SC_SCSI, US_PR_BULK, NULL, US_FL_START_STOP ), UNUSUAL_DEV( 0x05e3, 0x0702, 0x0000, 0xffff, "Genesys Logic", "USB IDE Hard Disk", US_SC_SCSI, US_PR_BULK, NULL, US_FL_START_STOP ), /*Some stuff for running Fijitsu 6 in1 card reader */ UNUSUAL_DEV( 0x0d7d, 0x0240, 0x0000, 0x9999, "Fujitsu Siemens", "6in1 card reader", US_SC_SCSI, US_PR_BULK, NULL, US_FL_START_STOP ), #ifdef ......rest of file I do the following: cd /usr/src/linux (ok) cp /boot/vmlinux.config .config (ok) make xconfig (don't change anything - ok) make dep (ok) make clean (ok) make bzImage - some warnings, but stops on the following: gcc -D__KERNEL__ -I/usr/src/linux-2.4.19.SuSE/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -fomit-frame-pointer -pipe -mpreferred-stack-boundary=2 -march=i586 -DKBUILD_BASENAME=semaphore -c -o semaphore.o semaphore.c semaphore.c:329:1: warning: multi-line string literals are deprecated semaphore.c:333:35: warning: multi-line string literals are deprecated semaphore.c:335:27: warning: multi-line string literals are deprecated semaphore.c:338:35: warning: multi-line string literals are deprecated gcc -D__KERNEL__ -I/usr/src/linux-2.4.19.SuSE/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -fomit-frame-pointer -pipe -mpreferred-stack-boundary=2 -march=i586 -DKBUILD_BASENAME=signal -c -o signal.o signal.c gcc -D__ASSEMBLY__ -D__KERNEL__ -I/usr/src/linux-2.4.19.SuSE/include -traditional -c entry.S -o entry.o gcc -D__KERNEL__ -I/usr/src/linux-2.4.19.SuSE/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -fomit-frame-pointer -pipe -mpreferred-stack-boundary=2 -march=i586 -DKBUILD_BASENAME=traps -DEXPORT_SYMTAB -c traps.c traps.c: In function `do_int3': traps.c:658: warning: implicit declaration of function `kdb' traps.c:658: `KDB_REASON_BREAK' undeclared (first use in this function) traps.c:658: (Each undeclared identifier is reported only once traps.c:658: for each function it appears in.) traps.c:658: `kdb_eframe_t' undeclared (first use in this function) traps.c:658: parse error before "regs" make[1]: *** [traps.o] Error 1 make[1]: Leaving directory `/usr/src/linux-2.4.19.SuSE/arch/i386/kernel' make: *** [_dir_arch/i386/kernel] Error 2