diff options
Diffstat (limited to 'msdos.h')
| -rw-r--r-- | msdos.h | 9 |
1 files changed, 4 insertions, 5 deletions
@@ -141,7 +141,7 @@ struct fat32_t { unsigned char infoSector[2]; /* 48 changeable global info */ unsigned char backupBoot[2]; /* 50 back up boot sector */ unsigned char reserved[6]; /* 52 ? */ - unsigned char reserved2[6]; /* 52 ? */ + unsigned char reserved2[6]; /* 58 ? */ struct label_blk_t labelBlock; }; /* ends at 58 */ @@ -202,17 +202,18 @@ union bootsector { #define OFFSET(x) (((char *) (boot->x)) - ((char *)(boot->jump))) /* max FAT12/FAT16 sizes, according to - + https://staff.washington.edu/dittrich/misc/fatgen103.pdf https://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/fatgen103.doc - interestingly enough, another Microsoft document + interestingly enough, another Microsoft document [http://support.microsoft.com/default.aspx?scid=kb%3ben-us%3b67321] gives different values, but the first seems to be more sure about itself, so we believe that one ;-) */ #define FAT12 0x0ff5 /* max. number + 1 of clusters described by a 12 bit FAT */ #define FAT16 0xfff5 /* max number + 1 of clusters for a 16 bit FAT */ +#define FAT32 0xffffff5 /* max number + 1 of clusters for a 32 bit FAT */ #define ATTR_ARCHIVE 0x20 #define ATTR_DIR 0x10 @@ -248,8 +249,6 @@ union bootsector { ((n) * FAT_SIZE(bits, sec_siz, clusters) + \ (clusters) * (cluster_size)) -#define TOTAL_DISK_SIZE(bits, sec_siz, clusters, n, cluster_size) \ - (DISK_SIZE(bits, sec_siz, clusters, n, cluster_size) + 2) /* approx. total disk size: assume 1 boot sector and one directory sector */ extern const char *mversion; |