Exe not bootable .... why ?

[chip]

Hi guys

I noticed this a lot of times, but never asked before

In the zone there's a disk which contain an exe (a demo by Necropolis)

Disk simply boot the exe

The disk works fine

But, and this is the strange thing, if you extract the exe from the disk and launch it, you will get the message "the selected floppy disk image is not bootable"

I guess this is something related to the size of the exe

It should be too big to fit on a single disk

But the disk from which the exe comes from works fine, so there's something i'm missing here

Someone has some nice explanation for this ?

Thanks, chip

[Hewitson]

Why would you try to boot an executable file?

[Toni Wilen]

Lots of text. Not much useful details..

Exact size of file? Perhaps it is FFS disk which has more capacity?

[chip]

File size is 857.608 bytes

[Toni Wilen]

Originally Posted by chip

File size is 857.608 bytes

It won't fit in normal OFS disk (857608/488 = 1758 blocks needed, disk only has 1760 blocks but bootblock takes 2 blocks, root directory + bitmap takes another two, file header takes 1, s/startup-sequence takes 3 blocks, 1 file header, 1 directory header and 1 data block. Not including possible extension blocks.).

Original disk most likely is FFS formatted (=works only on KS 2.0+, only 1676 blocks needed to store the file data).

Perhaps UAE exe to disk could use FFS automatically if selected KS ROM is 2.0+. But on the other hand, too large for OFS but still fits in FFS is quite narrow size range..

[chip]

Thanks for explanation Toni

[Foebane]

Originally Posted by Hewitson

Why would you try to boot an executable file?

I have a LOT of demos that have exe extensions in addition to adf files, and a lot of them boot directly from 1.3/2.0/3.1 boot screens. For those that don't, I just run them from WB instead. It's just a case of testing to find out which is which.

[AMIGASYSTEM]

Originally Posted by chip

But, and this is the strange thing, if you extract the exe from the disk and launch it, you will get the message "the selected floppy disk image is not bootable"

I guess this is something related to the size of the exe

Thanks, chip

If you're talking about the floppy named "Necropolis-Back2Living" I have no problem running the executable extract named "demo", what OS are you using?

Also "demo" is a compacted file its real size is "2,106,454 bytes".


----- Italiano ----


Se stai parlando del floppy nominato "Necropolis-Back2Living" io non ho nessun problema ad eseguire l'eseguibile estratto di nome "demo", che OS stai utilizzando?

Inoltre "demo" è un file compattato la sua reale dimensione è "2.106.454 byte"

[chip]

I'm using WinUAE Quickstart panel, A1200 if i well remember

[AMIGASYSTEM]

I tried the Quickstart A1200 with OS 3.0 and OS 3.1 standard and found no problem.

[chip]

I'm using WinUAE 4.2.0 64 bit .... and you ?

[AMIGASYSTEM]

WinUAE 4.2.1 32Bit, also works well on RTG systems, successfully tested also with AFA One

[chip]

So perhaps Toni fixed this with the new version of WinUAE

[AMIGASYSTEM]

No also works well with WinUAE 4.2.0 and precedents, including 3.x.x

[chip]

Ok, thanks for testing