3GB HDF file is displayed as only 855mb??

liquidsmoke · 26 October 2019, 23:20

ive got to copy some files from my amiga sd card.

i created a hdf file in winuae using RDB/OFS/FFS
i then added it as DH3

the hdf shows up as DH3:NDOS when i boot my sd card in winuae.
i quick formatted it using the default format option on the workbench toolbar - fast file system, directory cache etc

it says during the format message windows that its 3000mb

how come when i open the window in dopus or elsewhere it says theres only 855mb free?

r.cade · 27 October 2019, 01:11

Because those file systems only support 2GB. It has "wrapped around" and only shows you the last ~850M

liquidsmoke · 27 October 2019, 01:53

well it ran out of space after copying 855mb of data
and i couldnt copy more

should it have kept going?

Toni Wilen · 27 October 2019, 09:34

Filesystem max size and what WB/Info/utilities show have nothing in common. Almost any "old" utility shows >2G free space incorrectly, including WB. (Note that directory harddrives include hack that works around this problem)

Do not create partition hardfiles larger than 1G unless you really know what are you doing. (Quick hint: if HDF panel says "too many cyls". You will have problems. Increase surfaces until it disappears.)

Use full drive/RDB mode and partition it using hdtoolbox, like using real hardware. It is slightly more safer.

26 October 2019, 23:20	#1
liquidsmoke Registered User Join Date: Oct 2019 Location: UK Posts: 107	3GB HDF file is displayed as only 855mb?? ive got to copy some files from my amiga sd card. i created a hdf file in winuae using RDB/OFS/FFS i then added it as DH3 the hdf shows up as DH3:NDOS when i boot my sd card in winuae. i quick formatted it using the default format option on the workbench toolbar - fast file system, directory cache etc it says during the format message windows that its 3000mb how come when i open the window in dopus or elsewhere it says theres only 855mb free?

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27 October 2019, 01:11	#2
r.cade Registered User Join Date: Aug 2006 Location: Augusta, Georgia, USA Posts: 550	Because those file systems only support 2GB. It has "wrapped around" and only shows you the last ~850M

27 October 2019, 01:53	#3
liquidsmoke Registered User Join Date: Oct 2019 Location: UK Posts: 107	well it ran out of space after copying 855mb of data and i couldnt copy more should it have kept going?

27 October 2019, 09:34	#4
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,506	Filesystem max size and what WB/Info/utilities show have nothing in common. Almost any "old" utility shows >2G free space incorrectly, including WB. (Note that directory harddrives include hack that works around this problem) Do not create partition hardfiles larger than 1G unless you really know what are you doing. (Quick hint: if HDF panel says "too many cyls". You will have problems. Increase surfaces until it disappears.) Use full drive/RDB mode and partition it using hdtoolbox, like using real hardware. It is slightly more safer.

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