Re: WANTED: Information on Apple II copy protection-- Why .SDK

[supertimer@aol.com (Supertimer)]

tward@XXXXenteract.com wrote:

>Rubywand <rubywand@swbell.net> wrote:
>>      An .SDK file is an .SHK file. Even so, there is some reason for
>> using the ".SDK" extension.
>
>They are very different formats, assuming the suffixes are being used
>properly. SHK is a file archive, SDK is a disk archive. On the Apple II
>platform itself, the only time SDK should be used is for non-ProDOS disks
>or in cases such as the Apple Installer or Print Shop where certain disk
>naming conventions must be followed that would be lost in a file archive.
>I'm referring to archives that will be distributed. You can use any format
>you want for your personal archives.

I can see the reason for calling it .sdk, but how did it get started?  .sdk
is not an "official" suffix.  Shrinkit will always put *.shk as default, even
if it is a disk image.

The shrinkit disk image should be and is supported by emulators.  Just
unshk it on the PC with nulib and you will get a nice image file ready to
be 2MGed.  In case people are wondering, this is how to get GS disks
over to XGS.  GSHK to make "SDK" images, Nulib to unshk on the PC,
and 2MG to convert.