diff options
| -rw-r--r-- | fat.c | 19 |
1 files changed, 17 insertions, 2 deletions
@@ -702,11 +702,25 @@ checklost(int dosfs, struct bootblock *boot, struct fatEntry *fat) } } + if (boot->NumFree) { + if ((boot->FSNext >= boot->NumClusters) || (fat[boot->FSNext].next != CLUST_FREE)) { + pwarn("Next free cluster in FSInfo block (%u) not free\n", + boot->FSNext); + if (ask(1, "Fix")) + for (head = CLUST_FIRST; head < boot->NumClusters; head++) + if (fat[head].next == CLUST_FREE) { + boot->FSNext = head; + ret = 1; + break; + } + } + } + if (boot->FSNext > boot->NumClusters ) { pwarn("FSNext block (%d) not correct NumClusters (%d)\n", boot->FSNext, boot->NumClusters); boot->FSNext=CLUST_FIRST; // boot->FSNext can have -1 value. - } + } if (boot->NumFree && fat[boot->FSNext].next != CLUST_FREE) { pwarn("Next free cluster in FSInfo block (%u) not free\n", @@ -718,7 +732,8 @@ checklost(int dosfs, struct bootblock *boot, struct fatEntry *fat) ret = 1; break; } - } + } + if (ret) mod |= writefsinfo(dosfs, boot); } |