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| author | Thorsten Wilmer | 2014-06-24 09:38:30 +0200 |
|---|---|---|
| committer | Karel Zak | 2014-06-24 09:40:06 +0200 |
| commit | 9bb8caff87c2ae1ea22068176d3375c1cc2cb76d (patch) | |
| tree | 9df2241729c98a66983bcb353a2b72f144dec144 /libfdisk/src/dos.c | |
| parent | libmount: special treatment for auto in fstype pattern (diff) | |
| download | kernel-qcow2-util-linux-9bb8caff87c2ae1ea22068176d3375c1cc2cb76d.tar.gz kernel-qcow2-util-linux-9bb8caff87c2ae1ea22068176d3375c1cc2cb76d.tar.xz kernel-qcow2-util-linux-9bb8caff87c2ae1ea22068176d3375c1cc2cb76d.zip | |
libfdisk: (dos) calculation of total size based on CHS in check function
Many people report a problem with the message if (cylinders <= 1024 &&
start != total) fprintf(stderr, _("Partition %d: previous sectors %d
disagrees with " "total %d\n"), n, start, total);
This message comes from the fact that the previous code caluclates the
total number of sectors in the wrong way.
The formula should be total = (real_c * heads + h) * sectors + real_s;
As a Cylinder consists of some heads * sectors A Head consists of some
sectors and finally sectors are the smallest unit
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'libfdisk/src/dos.c')
| -rw-r--r-- | libfdisk/src/dos.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libfdisk/src/dos.c b/libfdisk/src/dos.c index e365e722d..f3b162af1 100644 --- a/libfdisk/src/dos.c +++ b/libfdisk/src/dos.c @@ -1155,7 +1155,7 @@ static void check(struct fdisk_context *cxt, size_t n, real_s = sector(s) - 1; real_c = cylinder(s, c); - total = (real_c * cxt->geom.sectors + real_s) * cxt->geom.heads + h; + total = (real_c * cxt->geom.heads + h) * cxt->geom.sectors + real_s; if (!total) fdisk_warnx(cxt, _("Partition %zu: contains sector 0"), n); |