Changeset 67876 in vbox

Timestamp:

Jul 10, 2017 1:27:22 PM (8 years ago)

Author:

vboxsync

Message:

RTFsFatVolFormat144: 1 sector per cluster. Added hack for cluster rounding issues when using RTFsFatVolFormat to create a new raw image.

File:

• trunk/src/VBox/Runtime/common/fs/fatvfs.cpp (modified) (2 diffs)

trunk/src/VBox/Runtime/common/fs/fatvfs.cpp

@@ -5069 +5069 @@
         uint64_t offCur = offFirstFat + cbFat * cFats + cbRootDir;
         uint64_t cbLeft = cTotalSectors * cbSector;
+        if (cbVol - cbLeft <= _256K) /* HACK ALERT! Format to end of volume if it's a cluster rounding thing.  */
+            cbLeft = cbVol;
         if (cbLeft > offCur)
         {
@@ -5109 +5111 @@
 {
     return RTFsFatVolFormat(hVfsFile, 0 /*offVol*/, 1474560, fQuick ? RTFSFATVOL_FMT_F_QUICK : RTFSFATVOL_FMT_F_FULL,
-                            512 /*cbSector*/, 2 /*cSectorsPerCluster*/, RTFSFATTYPE_FAT12, 2 /*cHeads*/,  18 /*cSectors*/,
+                            512 /*cbSector*/, 1 /*cSectorsPerCluster*/, RTFSFATTYPE_FAT12, 2 /*cHeads*/,  18 /*cSectors*/,
                             0xf0 /*bMedia*/, 0 /*cHiddenSectors*/, 224 /*cRootDirEntries*/, NULL /*pErrInfo*/);
 }