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[DISKPART] Ignore non-mounted GPT partitions in DismountVolume

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This commit is contained in:
Eric Kohl
2026-02-07 14:44:05 +01:00
parent ece92ee517
commit 44609d1398
1 changed files with 25 additions and 12 deletions
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base/system/diskpart/partlist.c
+25 -12
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@@ -2887,20 +2887,33 @@ DismountVolume(
WCHAR Buffer[MAX_PATH];
/* Check whether the partition is valid and was mounted by the system */
if (!PartEntry->IsPartitioned ||
IsContainerPartition(PartEntry->Mbr.PartitionType) ||
!IsRecognizedPartition(PartEntry->Mbr.PartitionType) ||
PartEntry->FormatState == UnknownFormat ||
// NOTE: If FormatState == Unformatted but *FileSystem != 0 this means
// it has been usually mounted with RawFS and thus needs to be dismounted.
/* !*PartEntry->FileSystem || */
PartEntry->PartitionNumber == 0)
if (PartEntry->DiskEntry->PartitionStyle == PARTITION_STYLE_MBR)
{
/* The partition is not mounted, so just return success */
return STATUS_SUCCESS;
}
if (!PartEntry->IsPartitioned ||
IsContainerPartition(PartEntry->Mbr.PartitionType) ||
!IsRecognizedPartition(PartEntry->Mbr.PartitionType) ||
PartEntry->FormatState == UnknownFormat ||
// NOTE: If FormatState == Unformatted but *FileSystem != 0 this means
// it has been usually mounted with RawFS and thus needs to be dismounted.
/* !*PartEntry->FileSystem || */
PartEntry->PartitionNumber == 0)
{
/* The partition is not mounted, so just return success */
return STATUS_SUCCESS;
}
ASSERT(PartEntry->Mbr.PartitionType != PARTITION_ENTRY_UNUSED);
ASSERT(PartEntry->Mbr.PartitionType != PARTITION_ENTRY_UNUSED);
}
else if (PartEntry->DiskEntry->PartitionStyle == PARTITION_STYLE_GPT)
{
if (!PartEntry->IsPartitioned ||
IsEqualGUID(&PartEntry->Gpt.PartitionType, &PARTITION_ENTRY_UNUSED_GUID) ||
(PartEntry->FormatState == UnknownFormat))
{
/* The partition is not mounted, so just return success */
return STATUS_SUCCESS;
}
}
/* Open the volume */
StringCchPrintfW(Buffer, ARRAYSIZE(Buffer),