[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] Improve the IDE HD geometry auto detection algorithm.
# HG changeset patch # User kaf24@xxxxxxxxxxxxxxxxxxxx # Node ID e3dcc10765ea3512306665b07c621ba80da5cde8 # Parent 2420e309074b3761ebeb289c03da4109659d0dad Improve the IDE HD geometry auto detection algorithm. Signed-off-by: Nitin A Kamble <nitin.a.kamble@xxxxxxxxx> Signed-off-by: Asit K Mallick <asit.k.mallick@xxxxxxxxx> Signed-off-by: Arun Sharma <arun.sharma@xxxxxxxxx> diff -r 2420e309074b -r e3dcc10765ea tools/ioemu/hw/ide.c --- a/tools/ioemu/hw/ide.c Fri Jul 1 17:26:37 2005 +++ b/tools/ioemu/hw/ide.c Fri Jul 1 21:24:09 2005 @@ -1850,7 +1850,11 @@ a cylinder boundary */ s->heads = p->end_head + 1; s->sectors = p->end_sector & 63; + if (s->sectors == 0) + continue; s->cylinders = s->nb_sectors / (s->heads * s->sectors); + if (s->cylinders < 1 || s->cylinders > 16383) + continue; #if 0 printf("guessed partition: CHS=%d %d %d\n", s->cylinders, s->heads, s->sectors); @@ -1884,8 +1888,12 @@ s->sectors = secs; } else { ide_guess_geometry(s); - if (s->cylinders == 0) { - /* if no geometry, use a LBA compatible one */ + + /* if heads > 16, it means that a BIOS LBA + translation was active, so the default + hardware geometry is OK */ + if ((s->heads > 16) || (s->cylinders == 0)) { + /* if no geometry, use a standard physical disk geometry */ cylinders = nb_sectors / (16 * 63); if (cylinders > 16383) cylinders = 16383; _______________________________________________ Xen-changelog mailing list Xen-changelog@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-changelog
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