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BTW, this is a 16-bit problem. &nbsp;Thanks!
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<div>
Borland C++ Builder Example:<br />
<br />
void __fastcall TForm1::Button1Click(TObje<wbr />ct *Sender)<br />
{<br />
&nbsp; INT64 lpFreeBytesAvailableToCall<wbr />er;<br />
&nbsp; INT64 lpTotalNumberOfBytes;<br />
&nbsp; INT64 lpTotalNumberOfFreeBytes;<br />
<br />
<br />
&nbsp; Sysutils::GetDiskFreeSpace<wbr />Ex(&quot;A:\\&quot;,<wbr />lpFreeByte<wbr />sAvailable<wbr />ToCaller,l<wbr />pTotalNumb<wbr />erOfBytes,<wbr />&amp;lpTotalNu<wbr />mberOfFree<wbr />Bytes);<br />
<br />
&nbsp; ShowMessage(&quot;toal disk size=&quot;+IntToStr(lpTotalNum<wbr />berOfBytes<wbr />));<br />
<br />
<br />
<br />
<br />
Good &nbsp;luck!!
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Borland C++ Builder Example:

void __fastcall TForm1::Button1Click(TObject *Sender)
{
  INT64 lpFreeBytesAvailableToCaller;
  INT64 lpTotalNumberOfBytes;
  INT64 lpTotalNumberOfFreeBytes;


  Sysutils::GetDiskFreeSpaceEx("A:\\",lpFreeBytesAvailableToCaller,lpTotalNumberOfBytes,&lpTotalNumberOfFreeBytes);

  ShowMessage("toal disk size="+IntToStr(lpTotalNumberOfBytes));




Good  luck!!

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Opps! I missed the post stating that this was 16 bit.... 
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Opps! I missed the post stating that this was 16 bit....

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Well, thanks for the effort at least :)<br />
Anyone else?
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Well, thanks for the effort at least :)
Anyone else?

<div>
You can use 0x13 interruption (or biosdisk function : it is same) with AH = 08H: get status of disk<br />
AH return status :<br />
01h &nbsp; &nbsp;360K<br />
02h &nbsp; &nbsp;1.2M<br />
03h &nbsp; &nbsp;720K<br />
04h &nbsp; &nbsp;1.44M<br />
05h &nbsp; &nbsp;??? (reportedly an obscure drive type shipped on some IBM machines).<br />
2.88M on some machines (at least AMI 486 BIOS)<br />
06h &nbsp; &nbsp;2.88M<br />
10h &nbsp; &nbsp;ATAPI Removable Media Device<br />
<br />
see more details in <br />
<a href="http://www.ctyme.com/intr/rb-0621.htm" rel="ugc">http://www.ctyme.com/intr/rb-0621.htm</a><br />

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You can use 0x13 interruption (or biosdisk function : it is same) with AH = 08H: get status of disk
AH return status :
01h    360K
02h    1.2M
03h    720K
04h    1.44M
05h    ??? (reportedly an obscure drive type shipped on some IBM machines).
2.88M on some machines (at least AMI 486 BIOS)
06h    2.88M
10h    ATAPI Removable Media Device

see more details in
http://www.ctyme.com/intr/rb-0621.htm [http://www.ctyme.com/intr/rb-0621.htm]


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<div class="content wysiwyg-content">
I haven't the slightest idea how to start this. &nbsp;Theory is fine, but sample code would be the best. &nbsp;Thanks!
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I haven't the slightest idea how to start this.  Theory is fine, but sample code would be the best.  Thanks!

How do I discern between a 1.44 MB and a 720k floppy?

C++ is an intermediate-level general-purpose programming language, not to be confused with C or C#. It was developed as a set of extensions to the C programming language to improve type-safety and add support for automatic resource management, object-orientation, generic programming, and exception handling, among other features.