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Use a better formula for calculating FAT12 clusters, by multiplying nominator

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and denominator by 3.


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@1452 6ac86273-5f31-0410-b378-82cca8765d1b
This commit is contained in:
Bart Oldeman 2009-06-17 22:04:49 +00:00
parent e3f90446b3
commit 4d3e2e2fad
1 changed files with 3 additions and 3 deletions
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6
kernel/initdisk.c
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@ -424,9 +424,9 @@ VOID CalculateFATData(ddt * pddt, ULONG NumSectors, UBYTE FileSystem)
fatdat = (unsigned)fatdata;
if (fatdata > 32640)
fatdat = 32640;
/* The "+2*NSECTOR" is for the reserved first two FAT entries */
defbpb->bpb_nfsect = cdiv(fatdat + 2 * NSECTORFAT12,
SEC_SIZE * 2 * NSECTORFAT12 / 3 + NFAT);
/* The "+2*NSECTORFAT12" is for the reserved first two FAT entries */
defbpb->bpb_nfsect = (UWORD)cdiv((fatdat + 2 * NSECTORFAT12) * 3UL,
SEC_SIZE * 2 * NSECTORFAT12 + NFAT*3);
#if DEBUG
/* Need to calculate number of clusters, since the unused parts of the
* FATS and data area together could make up space for an additional,