The 2 GB or maybe 4 GB limit is because something must accidentally use 32bit ints instead of long long int
Right! The erropr happens at line 293 of boot.c (loff_t is 64-bit long long, off_t is 32-bit):
fs_test((loff_t) ((total_sectors & ~1)-1) * (loff_t)logical_sector_size, logical_sector_size);
int fs_test(loff_t pos,size_t size) in io.c calls llseek(fd,pos,0) which fails to return pos.
loff_t llseek(int fd, loff_t offset, int whence) in io.c just returns VolumeSeek(offset).
off_t VolumeSeek(off_t offset) in volume.c sets loff_t VolumePointer to offset and returns it.
Oops! VolumeSeek() should be loff_t(loff_t offset) instead of off_t VolumeSeek(off_t offset)! But there must be yet another bug, because when I changed it, the bug was still there, although the code generated for VolumeSeek() became correct. Will try to catch the other bug tomorrow.
Lucho
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