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how to OpenVolume fs2:\\ XXXX.txt

So your queston is “how to use OpenVolume function to access the file on FS2?”

i’ll try Another method
uefiman entry point …..

EFI FILE PROTOCOL * ROOT
Status = SimpleFileSystem->OpenVolume(SimpleFileSystem, Root);

Status = Root ->Open(
Root,
& SystemFile,
(CHAR16*)L”TEST.TXT”,
EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE,
0
);

fs0:\ file only accessible

fs2:\test.txt file access method please……

You can try “Status = ShellOpenFileByName(L”fs2:”, (SHELL_FILE_HANDLE *)&DirHandle, EFI_FILE_MODE_READ , 0);”

Question
HOW TO OPEN VOLUME FS2: \ ??

看一下 http://www.lab-z.com/how-to-use-eadk/ 这篇文章

AppPkg 是 EADK的一部分。