[Bug 5711] New: Lotus Smartsuite 3.1 installer fails early with "insufficient disk space"

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=5711

           Summary: Lotus Smartsuite 3.1 installer fails early with
                    "insufficient disk space"
           Product: Wine
           Version: CVS
          Platform: Other
               URL: http://www.retrosoftware.com/12699.html
        OS/Version: other
            Status: NEW
          Severity: normal
          Priority: P2
         Component: wine-dos
        AssignedTo: wine-bugs(a)winehq.org
        ReportedBy: dank(a)kegel.com


A user handed me his 12 year old Lotus Smartsuite 3.1 disk, said
"I have lots of Lotus 123 r5 spreadsheets that only
this version of Lotus can read.  Can you get this to run in Linux?"
So I gave it a shot.  Its installer aborted with
"Insufficient disk space", which was not quite accurate, as I have
1.7GB free.  +relay showed:

000a:Call KERNEL.102: DOS3CALL() ret=11d7:1588 ds=11de
     AX=3600 BX=0002 CX=0860 DX=0003 SI=000a DI=0000 ES=11df EFL=00000246
000a:Call winedos.CallBuiltinHandler(7f2ddd6c,00000021) ret=7fd2c63d
000a:Call kernel32.GetDriveTypeW(7f2dd4fa L"C:") ret=7f540ff3
...
000a:Call kernel32.GetDiskFreeSpaceW(7f2dd658
L"C:\\",7f2ddab0,7f2ddab4,7f2ddabc,7f2ddab8) ret=7f546985
...
000a:Ret  kernel32.GetDiskFreeSpaceW() retval=00000001 ret=7f546985
000a:Ret  winedos.CallBuiltinHandler() retval=00001000 ret=7fd2c63d
000a:Ret  KERNEL.102: DOS3CALL() retval=none ret=11d7:1588 ds=11de
     AX=0080 BX=0465 CX=1000 DX=92b3 SI=000a DI=0000 ES=11df EFL=00000246
...
000a:Call USER.421: WVSPRINTF(11de:419c,11de4098 "Insufficient disk
space",11df:1802) ret=11d7:0a4e ds=11de

On return, int 21h ah=36h has:
AX = sectors per cluster
BX = number of available clusters
CX = number of bytes per sector
DX = number of clusters per drive

That value for CX seems really high, btw.
By trial and error, I found that the app
was happy when I reported 1GB of free space
with a reasonable CX, so I coded up a patch
that returns that if real free space is over 1GB,
and it lets the app install.  I'll attach that next.

The installer has heap and dde problems later
which make for a rough ride, but it does seem
to finish successfully.  It then fails to run
because of a problem loading module 'SOUND',
but that's bug 3950.

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