HRESULT 0xC0AAB130 (IMAPI_E_TOO_MANY_DIRS): meaning and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: the selected output file system cannot represent this many directories.

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IMAPI_E_DIRECTORY_READ_FAILURE	IMAPI_E_ISO9660_LEVELS

IMAPI_E_TOO_MANY_DIRS

IMAPI_E_TOO_MANY_DIRS is a file-system capacity or structure limit detected while IMAPI2FS validates the image hierarchy. Microsoft documents this HRESULT for directory and tree addition and for changing FileSystemsToCreate. The relevant limit belongs to one of the output file systems, not to the number of source directories NTFS can hold.

Find which output format rejects the hierarchy

Record FileSystemsToCreate and the current DirectoryCount.
Revalidate the hierarchy against each selected output format instead of assuming the most capable format determines the result.
If compatibility with the limiting file system is optional, remove that format rather than flattening the tree blindly.

An image can be perfectly valid for UDF yet fail when ISO 9660 or another selected representation cannot encode the directory set. The same content may also cross a limit only after importing a previous session. Keep output-format selection in the diagnostic record and report which compatibility target forces the restriction. Deleting unrelated files will not help if the problem is specifically the number of directories.

FileSystemsToCreate · AddTree · IFileSystemImage

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