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[FASTFAT] Support 64 KiB cluster sizes

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FAT16 filesystem was not recognized on some 4GB USB flash drives.
This change makes them just work.

References:
- https://chat.reactos.org/reactos/pl/h83pm5ngkffk7qiyrmqnaaopxh
- https://support.microsoft.com/en-us/help/140365/default-cluster-size-for-ntfs-fat-and-exfat

CORE-16511
This commit is contained in:
Stanislav Motylkov 2020-07-22 19:50:24 +03:00
parent 21b56d77c6
commit 06d5ed7ece
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GPG key ID: AFE513258CBA9E92
1 changed files with 2 additions and 2 deletions
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4
drivers/filesystems/fastfat/fsctl.c
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@ -197,9 +197,9 @@ VfatHasFileSystem(
} }
if (*RecognizedFS && if (*RecognizedFS &&
Boot->BytesPerSector * Boot->SectorsPerCluster > 32 * 1024) Boot->BytesPerSector * Boot->SectorsPerCluster > 64 * 1024)
{ {
DPRINT1("ClusterSize %dx\n", Boot->BytesPerSector * Boot->SectorsPerCluster); DPRINT1("ClusterSize %d\n", Boot->BytesPerSector * Boot->SectorsPerCluster);
*RecognizedFS = FALSE; *RecognizedFS = FALSE;
} }