[syslinux] USB Flash disk with sector size 2048

[Geert Stappers]

Op 10-01-2007 om 23:00 schreef Francois Boisson:
> Hello every one an a pretty new year.
> 
> I'm making a derivative a the Feather linux-live which can be found
> here: http://franboisson.homeip.net/clef/ClefAgreg.iso
> 
> Everything works find except with USB key with sector size different
> then 512 (2048 in my case). I look at the source of syslinux and change
> the following:
> 
> * The test in syslxmod.c
> * Change each time I see SECTOR_SHIFT=9 in SECTOR_SHIFT=11

2**9=512  2**11=2048

> It's compile fine but when I use syslinux on the key
> # syslinux /dev/sda1 
> gives a segfault. 
> An strace gives
> 
> ***
> rt_sigaction(SIGINT, {SIG_DFL}, NULL, 8) = 0
> rt_sigaction(SIGQUIT, {SIG_DFL}, NULL, 8) = 0
> rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
> --- SIGCHLD (Child exited) @ 0 (0) ---
> unlink("/tmp/syslinux-mtools-BIL09s")   = 0
> pread(3, "\353<\220mkdosfs\0\0\10\10\1\0\2\0\2\0\0\370=\0 \0@\0\0"...,512, 0) = 512

512, I would expect 2048 ...

> --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> +++ killed by SIGSEGV +++
> ***
> No ldlinux.sys on the key and key does not boot. 
> Can someone help me or tell me around where I must look to find the bug.
> 
> Thanks for help.
> 
> François Boisson


I hope this helps.
Geert Stappers