How to get a list of HDD partitions?

MickGyver · 23 July 2020, 09:01

I was thinking about the possibility of having a game look for HDD partitions available, so game data could be saved to the hard disk instead of the floppy (NVRAM in the case of a CD32). Any ideas how this could be done?

Daedalus · 23 July 2020, 09:56

The basics are that you lock the DOS list with the relevant flags for what you're looking for, then step through the items in the list, making a list of the ones you want, then unlock the DOS list. AmiBlitz3's includes have the relevant OS calls in wrapper functions in dos.include (dos_CreateDosList{}, dos_ScanVolumes{} etc.), and BB2 has a similar functionality from the RIDOSLib library (GetDeviceList, NextDevice). Note that I believe this functionality is OS 2.0+, and a different method is needed for OS 1.x machines...

thomas · 23 July 2020, 10:39

Actually you cannot get a list of HDD partitions from AmigaDOS. You can only get a list of volumes or devices, but you cannot distinct whether they are partitions, floppy disks, CD ROMs or something else.

Daedalus · 23 July 2020, 13:00

Yeah, fair point. Actually, that agnosticism is one of the things I like about the Amiga. Games that allow you to select a save location do list all volumes/devices, so you can choose yourself whether it's a floppy disk or hard drive partition (or whatever else) that you save to. Frontier in particular comes to mind.

MickGyver · 23 July 2020, 13:24

Thanks guys!

I will try out the commands in the RIDOSLib.

Solo Kazuki · 23 July 2020, 17:50

If game could be installed on HDD, it could be used PROGDIR:, e.g. PROGDIR:Save/

MickGyver · 24 July 2020, 12:30

Quote:

Originally Posted by Solo Kazuki

If game could be installed on HDD, it could be used PROGDIR:, e.g. PROGDIR:Save/

Thanks, good to know!

23 July 2020, 09:01	#1
MickGyver Registered User Join Date: Oct 2008 Location: Finland Posts: 643	How to get a list of HDD partitions? I was thinking about the possibility of having a game look for HDD partitions available, so game data could be saved to the hard disk instead of the floppy (NVRAM in the case of a CD32). Any ideas how this could be done? Last edited by MickGyver; 23 July 2020 at 09:25.

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23 July 2020, 09:56	#2
Daedalus Registered User Join Date: Jun 2009 Location: Dublin, then Glasgow Posts: 6,334	The basics are that you lock the DOS list with the relevant flags for what you're looking for, then step through the items in the list, making a list of the ones you want, then unlock the DOS list. AmiBlitz3's includes have the relevant OS calls in wrapper functions in dos.include (dos_CreateDosList{}, dos_ScanVolumes{} etc.), and BB2 has a similar functionality from the RIDOSLib library (GetDeviceList, NextDevice). Note that I believe this functionality is OS 2.0+, and a different method is needed for OS 1.x machines...

23 July 2020, 10:39	#3
thomas Registered User Join Date: Jan 2002 Location: Germany Posts: 6,985	Actually you cannot get a list of HDD partitions from AmigaDOS. You can only get a list of volumes or devices, but you cannot distinct whether they are partitions, floppy disks, CD ROMs or something else.

23 July 2020, 13:00	#4
Daedalus Registered User Join Date: Jun 2009 Location: Dublin, then Glasgow Posts: 6,334	Yeah, fair point. Actually, that agnosticism is one of the things I like about the Amiga. Games that allow you to select a save location do list all volumes/devices, so you can choose yourself whether it's a floppy disk or hard drive partition (or whatever else) that you save to. Frontier in particular comes to mind.

23 July 2020, 13:24	#5
MickGyver Registered User Join Date: Oct 2008 Location: Finland Posts: 643	Thanks guys! I will try out the commands in the RIDOSLib.

23 July 2020, 17:50	#6
Solo Kazuki Registered User Join Date: Sep 2004 Location: Poland Posts: 1,301	If game could be installed on HDD, it could be used PROGDIR:, e.g. PROGDIR:Save/

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