Shrinking SD card image size (remove unused space) to fit into smaller card?

emuola · 07 February 2021, 16:52

I've got a working and slightly customized ClassicWB installation for my A600 (Furia etc.), which is working really fine. It has 3 partitions, roughly 8 gigs of stuff with PFS3AIO.. Originally I used a 32GB card, because I had one

So, there's 24GB unused space on the card. Stupid me

I tried to make an image of the card using Win32DiskImager and tick the "Read only allocated partitions", but then it doesn't so anything. Without ticking the box it makes a image, but of course it's 32Gb... I checked the sizes of the partitions from WB, so I'm positive that the partitions are only ~8GB all together.

How can I (or can I?) shrink the image to git let's say to 16GB card or even to 8 GB card? A friend would need a test setup for ACA500 and It would be nice to use the existing CF:s lying around.

lesta_smsc · 07 February 2021, 17:09

I doubt you can through Windows. One option is to make another HDD file and copy files across using WinUAE.

@thomas did some work on HDD and I can't recall whether it involved partition sizes...

emuola · 07 February 2021, 18:01

Quote:

Originally Posted by lesta_smsc

I doubt you can through Windows. One option is to make another HDD file and copy files across using WinUAE.

@thomas did some work on HDD and I can't recall whether it involved partition sizes...

But if I don't create a SD card image (and put that to another card), I always have to create partitions/format the SD card using HDtoolbox in Winuae, right?

I mean with a correct size image it's really easy to just restore it to a new card

fgh · 07 February 2021, 21:19

If you are 100% certain there are no partitions extending after the point you want to reduce it to, you can cut the file with a suitable file manipulation tool. (or file splitter). Or just write it to a smaller CF card with an imaging tool that doesn't have an issue with the destination drive/card being smaller than the image.

The RDB will still say the card/image is 32GB, (as shown in hdtoolbox, etc), but this can be fixed by running fixhddsize from aminet. This tool can update the RDB to the correct size. (It cannot resize partitions)

emuola · 08 February 2021, 06:31

Quote:

Originally Posted by fgh

If you are 100% certain there are no partitions extending after the point you want to reduce it to, you can cut the file with a suitable file manipulation tool. (or file splitter). Or just write it to a smaller CF card with an imaging tool that doesn't have an issue with the destination drive/card being smaller than the image.

The RDB will still say the card/image is 32GB, (as shown in hdtoolbox, etc), but this can be fixed by running fixhddsize from aminet. This tool can update the RDB to the correct size. (It cannot resize partitions)

Ok, sounds like a plan

Thanks for the tip!

supaduper · 08 February 2021, 07:16

Try WinImage , you can write your larger image to a smaller SD or CF card, it will come up with a cycling error error after writing but it will have copied the RDB and you will then just have to check using Winuae or a real Amiga how much of your data has been copied and if your lucky most of it should have, link below
https://www.winimage.com/download.htm

07 February 2021, 16:52	#1
emuola Registered Whdload user Join Date: Oct 2006 Location: Finland Age: 48 Posts: 532	Shrinking SD card image size (remove unused space) to fit into smaller card? I've got a working and slightly customized ClassicWB installation for my A600 (Furia etc.), which is working really fine. It has 3 partitions, roughly 8 gigs of stuff with PFS3AIO.. Originally I used a 32GB card, because I had one So, there's 24GB unused space on the card. Stupid me I tried to make an image of the card using Win32DiskImager and tick the "Read only allocated partitions", but then it doesn't so anything. Without ticking the box it makes a image, but of course it's 32Gb... I checked the sizes of the partitions from WB, so I'm positive that the partitions are only ~8GB all together. How can I (or can I?) shrink the image to git let's say to 16GB card or even to 8 GB card? A friend would need a test setup for ACA500 and It would be nice to use the existing CF:s lying around. Last edited by emuola; 07 February 2021 at 17:06.

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07 February 2021, 17:09	#2
lesta_smsc Registered User Join Date: Feb 2012 Location: United Kingdom Posts: 3,173	I doubt you can through Windows. One option is to make another HDD file and copy files across using WinUAE. @thomas did some work on HDD and I can't recall whether it involved partition sizes...

07 February 2021, 21:19	#4
fgh Registered User Join Date: Dec 2010 Location: Norway Posts: 817	If you are 100% certain there are no partitions extending after the point you want to reduce it to, you can cut the file with a suitable file manipulation tool. (or file splitter). Or just write it to a smaller CF card with an imaging tool that doesn't have an issue with the destination drive/card being smaller than the image. The RDB will still say the card/image is 32GB, (as shown in hdtoolbox, etc), but this can be fixed by running fixhddsize from aminet. This tool can update the RDB to the correct size. (It cannot resize partitions)

08 February 2021, 07:16	#6
supaduper Registered User Join Date: Oct 2012 Location: Krypton Posts: 1,210	Try WinImage , you can write your larger image to a smaller SD or CF card, it will come up with a cycling error error after writing but it will have copied the RDB and you will then just have to check using Winuae or a real Amiga how much of your data has been copied and if your lucky most of it should have, link below https://www.winimage.com/download.htm

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