Question

I’m creating an installer with NSIS for a program that needs to run on an NTFS volume. How do I detect if the install to path is on an NTFS volume and act accordingly (show a help/warning message)?

Answer 1

Using external tools is not always a good idea (Not every command line tool exists on the Home versions of windows ) It’s always better to call the correct API directly with the system plug in.

!include LogicLib.nsh  StrCpy $0 'c:\' System::Call 'Kernel32::GetVolumeInformation(t '$0',t,i ${NSIS_MAX_STRLEN},*i,*i,*i,t.r1,i ${NSIS_MAX_STRLEN})i.r0' ${If} $0 <> 0     MessageBox mb_ok 'fs=$1' ${EndIf} 

But in this case, you should not be checking the file system type, but you should look for the actual feature you need (compression,encryption,junctions,sparse files etc)

!define FILE_SUPPORTS_ENCRYPTION 0x00020000 !define FILE_READ_ONLY_VOLUME 0x00080000 !define FILE_VOLUME_QUOTAS 0x00000020  !macro MakeBitFlagYesNo flags bit outvar IntOp ${outvar} ${flags} & ${bit} ${IfThen} ${outvar} <> 0 ${|} StrCpy ${outvar} 'Yes' ${|} ${IfThen} ${outvar} == 0 ${|} StrCpy ${outvar} 'No' ${|} !macroend  StrCpy $0 'c:\' System::Call 'Kernel32::GetVolumeInformation(t '$0',t,i ${NSIS_MAX_STRLEN},*i,*i,*i.r1,t,i ${NSIS_MAX_STRLEN})i.r0' ${If} $0 <> 0     !insertmacro MakeBitFlagYesNo $1 ${FILE_SUPPORTS_ENCRYPTION} $2     !insertmacro MakeBitFlagYesNo $1 ${FILE_READ_ONLY_VOLUME} $3     !insertmacro MakeBitFlagYesNo $1 ${FILE_VOLUME_QUOTAS} $4     MessageBox mb_ok 'flags=$1 $\nFILE_SUPPORTS_ENCRYPTION=$2$\nFILE_READ_ONLY_VOLUME=$3$\nFILE_VOLUME_QUOTAS=$4' ${EndIf}