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[VFATLIB]

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- Fix default cluster size for floppy disks

svn path=/trunk/; revision=52275
This commit is contained in:
Cameron Gutman 2011-06-16 13:07:08 +00:00
parent 6220537b5f
commit 6e97490ee0
1 changed files with 10 additions and 2 deletions
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8
reactos/lib/fslib/vfatlib/fat12.c
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@ -288,10 +288,18 @@ Fat12Format(IN HANDLE FileHandle,
/* Calculate cluster size */ /* Calculate cluster size */
if (ClusterSize == 0) if (ClusterSize == 0)
{
if (DiskGeometry.MediaType == FixedMedia)
{ {
/* 4KB Cluster (Harddisk only) */ /* 4KB Cluster (Harddisk only) */
ClusterSize = 4096; ClusterSize = 4096;
} }
else
{
/* 512 byte cluster (floppy) */
ClusterSize = 512;
}
}
SectorCount = PartitionInfo->PartitionLength.QuadPart >> SectorCount = PartitionInfo->PartitionLength.QuadPart >>
GetShiftCount(DiskGeometry->BytesPerSector); /* Use shifting to avoid 64-bit division */ GetShiftCount(DiskGeometry->BytesPerSector); /* Use shifting to avoid 64-bit division */