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Corrected handling on devices with 256 bytes/sector and

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correct BPBs (like SASI PC-98 disks).
This commit is contained in:
Natalia Portillo
2017-08-03 01:14:37 +01:00
parent fac30de5f2
commit 0dc4abab3e
1 changed files with 2 additions and 5 deletions
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7
DiscImageChef.Filesystems/FAT.cs
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@@ -279,9 +279,9 @@ namespace DiscImageChef.Filesystems
FAT32ParameterBlockShort shortFat32BPB = new FAT32ParameterBlockShort(); FAT32ParameterBlockShort shortFat32BPB = new FAT32ParameterBlockShort();
FAT32ParameterBlock Fat32BPB = new FAT32ParameterBlock(); FAT32ParameterBlock Fat32BPB = new FAT32ParameterBlock();
byte[] bpb_sector = imagePlugin.ReadSector(partition.Start); byte[] bpb_sector = imagePlugin.ReadSectors(partition.Start, 2);
if(imagePlugin.ImageInfo.sectorSize >= 512) if(imagePlugin.ImageInfo.sectorSize >= 256)
{ {
IntPtr bpbPtr = Marshal.AllocHGlobal(512); IntPtr bpbPtr = Marshal.AllocHGlobal(512);
Marshal.Copy(bpb_sector, 0, bpbPtr, 512); Marshal.Copy(bpb_sector, 0, bpbPtr, 512);
@@ -931,9 +931,6 @@ namespace DiscImageChef.Filesystems
// so let's hope implementations use common sense? // so let's hope implementations use common sense?
if(!isFAT12 && !isFAT16) if(!isFAT12 && !isFAT16)
{ {
sectors_per_real_sector = fakeBPB.bps / imagePlugin.ImageInfo.sectorSize;
fat_sector = imagePlugin.ReadSector((fakeBPB.rsectors + partition.Start) * sectors_per_real_sector);
ulong clusters; ulong clusters;
if(fakeBPB.sectors == 0) if(fakeBPB.sectors == 0)
clusters = fakeBPB.big_sectors / fakeBPB.spc; clusters = fakeBPB.big_sectors / fakeBPB.spc;