Strange hdf behavior [not really a problem].

[olesio]

Hello. I make following hdf as DH0: Device in WinUAE 1.1 which format disk inserted as
DH2: and copy all files from DH1: to DH2: This helps me make bootable hdf in easy way.
My startup-sequence file looks like below: Polish text are no matter beacuse there are a
messages for me, but I wonder why 5 MB hdf created in this way contain a following text
at offset 280714 (hex). Is it RequestString fault? This really do not disturb me in anything,
but I wondet why this text is stored on hdf when is it not copied in any way by me. Also I
chceck the same data on formated disk and copied under notmal Workbench version 3.1
and at the same place in hdf file there are 0 (hex) bytes. And sorry for my bad english
Btw, the text below in english mean "Give name (volume label) for formated disk DH2:".
I discovered this text when I search text "olesio" in hdf file for Soccer Kid AGA because I
want to check did game store highscore anywhere with my nickname on exit from game.

by olesio" "Podaj nazwe dla formatowanego dysku DH2:"

My startup-sequence

assign ENV: RAM:
assign T: RAM:

setenv AppTitle "HDF Creator by olesio"
setenv EmptyStr "!aN! !eMPTy! !STRiNG!"

cls
noborder on

if NOT EXISTS DH1:
run >nil: CentreQuest CX_PRIORITY=1 AUTOQUIT=NO CENTRE=SCREEN TEST=NO
setenv Choice `RequestChoice "$AppTitle" "Nie znaleziono dysku DH1:*NTeraz nastapi reboot." OK`
If $Choice eq "0"
EndIf 
reboot
EndIf

setenv HddLabel "$EmptyStr"
setenv HddLabel `RequestString "$AppTitle" "Podaj nazwe dla formatowanego dysku DH2:"`
if "$HddLabel" eq "$EmptyStr"
run >nil: CentreQuest CX_PRIORITY=1 AUTOQUIT=NO CENTRE=SCREEN TEST=NO
setenv Choice `RequestChoice "$AppTitle" "Nie podano nazwy dla dysku DH2:*NTeraz nastapi reboot." OK`
EndIf
If $Choice eq "0"
reboot
EndIf 

Format Device=DH2: Name="$HddLabel" FFS NOICONS
copy DH1: DH2: ALL

run >nil: CentreQuest CX_PRIORITY=1 AUTOQUIT=NO CENTRE=SCREEN TEST=NO
setenv Choice `RequestChoice "$AppTitle" "Dysk zostal utworzony." OK`

[Toni Wilen]

Perhaps editor you used created some temporary backup files or something like that.

[olesio]

Hmmm editor? But what editor you mean? Is this which I used to make startup-sequence?
I created startup-sequence in FAR Editor under Windows and copied files on hdf in DH0:.

[thomas]

It's rather a buffer which is not cleared before being used.

For example if you try out this command:

RequestString "$AppTitle" "Podaj nazwe dla formatowanego dysku DH2:"

The shell probably allocated a small piece of memory to resolve the variable and to store the real command in it:

RequestString "HDF Creator by olesio" "Podaj nazwe dla formatowanego dysku DH2:"

After this has finished, another program (for example copy) stores a file on HDD and the file system allocates memory as buffers. Buffers are always in block size (512 bytes) but may not be entirely used, if the file is smaller. So if only the first 27 bytes of the memory area is used for the file and the rest is kept unused, then when the block is written do disk the text by olesio" "Podaj nazwe dla formatowanego dysku DH2:" which remained in the buffer is written to disk, too, although it is not used ever again.

[olesio]

Ok, thanks for answer.