diff options
| -rw-r--r-- | sys/geom/geom_pc98.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/sys/geom/geom_pc98.c b/sys/geom/geom_pc98.c index 9551b3f..0b24690 100644 --- a/sys/geom/geom_pc98.c +++ b/sys/geom/geom_pc98.c @@ -84,8 +84,11 @@ g_pc98_modify(struct g_geom *gp, struct g_pc98_softc *ms, u_char *sec) #if 0 /* - * XXX: Some sources indicate this is a magic sequence, but appearantly - * XXX: it is not universal. Documentation would be wonderful to have. + * FreeBSD's boot0 IPL uses the name IPL1. This test initially was + * based on that observation. However, other boot loaders have use + * different names. A likely good test would be to test if the first + * 4 bytes are a jump to location 11 (or greater?) as well as the next + * 7 bytes being printable or with trailing NUL's. */ if (sec[4] != 'I' || sec[5] != 'P' || sec[6] != 'L' || sec[7] != '1') return (EBUSY); @@ -256,7 +259,7 @@ g_pc98_taste(struct g_class *mp, struct g_provider *pp, int flags) fwheads); } sectorsize = cp->provider->sectorsize; - if (sectorsize < 512) + if (sectorsize % 512 != 0) break; if (!strncmp(gp->name, "ad", 2)) { u_int total_secs = cp->provider->mediasize/sectorsize; |
