Posted by EmuMannen on 2, 2000 at 8:21 PM:
In Reply to: For DOS wizards :o) posted by Bugfinder on 2, 2000 at 7:17 PM:
Yes there is but I just have to say that I hate machine dependant copy protections...
Check DOS Kernel service INT 21/6900h to get serial number and INT 21/6901h to set the serial number (also check INT 21/440Dh):
AH = 69h
AL = subfunction
00h get serial number
01h set serial number
BL = drive (0=default, 1=A, 2=B, etc)
BH = info level (00h only for DOS; OS/2 allows other levels)
DS:DX -> disk info (below)
Return:
CF set on error or clear if successful.
Format of disk info:
Offset Size Description
00h WORD 0000h (info level)
02h DWORD disk serial number (binary)
06h 11 BYTEs volume label or "NO NAME " if none present
11h 8 BYTEs (AL=00h only) filesystem type (see #01767)
Note: under MS-DOS 7.0 or a Windows95 DOS box, the volume label field can be all blanks even when a volume label has been set (the Win95 installation seems to blank the volume label field in the partition boot sector; once LABEL has been run, the volume label is reported correctly).
Information taken from Ralf Brown's Interrupt List
/ EmuMannen
: Is there a way to determine the volume serial number of a HD or diskette? I mean, my Samsung 4.3 Gb hard disk after formatted had the number 2844-1DE2. Can this be changed by software? I want to know if there is a way to make a software to check if it is really running in the media it was actually compiled to. If someone tries to copy a program that was originally compiled to run in a HD with the number "1234-5678" then the program won't run... Unless there is a way to change manually this number. Is it possible? I know every time a person formats the HD or diskette, another version would be necessary.
: Thanks for any help!
:
: Bugfinder