Hi people i was browsing on amazon a few days ago and saw a IDE to SD card reader i thought why not give it a shot it was not expensive.

So i installed it and started the RiscPC up had a copy of hform on floppy so i loaded it and it saw the card great started with a 2GB card format ok no errors in writing anything to it even did a full verify on it without no error, However has soon has i reboot the RiscPC the card is blank i have to go through hform again and start a fresh now i have tried this with a 2GB,4GB,8GB and a 64GB card all work fine after format until i reboot the RiscPC.

Machine RiscPC running RiscOS 4.02, hform version 2.75
Hform gives the following layout for a 64GB card

cylinder 3812
heads 16
sectors per track 128

Anyone any thoughts??

Thank You
Martin

Martin Taylor <mtaylor141273@gmail.com> wrote:
> Hi people i was browsing on amazon a few days ago and saw a IDE to SD card reader i thought why not give it a shot it was not expensive.
>
> So i installed it and started the RiscPC up had a copy of hform on floppy
> so i loaded it and it saw the card great started with a 2GB card format ok
> no errors in writing anything to it even did a full verify on it without
> no error, However has soon has i reboot the RiscPC the card is blank i
> have to go through hform again and start a fresh now i have tried this
> with a 2GB,4GB,8GB and a 64GB card all work fine after format until i
> reboot the RiscPC.

When you say it's 'blank', what do you mean? 'Disc not recognised, has it
been formatted?' message? Or correctly showing as an ADFS drive but just
with an empty Filer window?

Which 'verify' was it - from the Filer menu? The 'soak test' options in
HForm are useless these days.

> Machine RiscPC running RiscOS 4.02, hform version 2.75
> Hform gives the following layout for a 64GB card
>
> cylinder 3812
> heads 16
> sectors per track 128

Those numbers are pretty meaningless these days but indicate a 4GB drive.
You need to format it with LBA enabled - I'm not sure if that's an option
your version of HForm offers?

As you say formatting succeeds and it shows up as a drive, can you write a
few GB to it without errors? Can you read them back successfully?

Theo

On Friday, 14 May 2021 at 13:04:32 UTC+1, Theo wrote:
> Martin Taylor <mtaylo...@gmail.com> wrote:
> > Hi people i was browsing on amazon a few days ago and saw a IDE to SD card reader i thought why not give it a shot it was not expensive.
> >
> > So i installed it and started the RiscPC up had a copy of hform on floppy
> > so i loaded it and it saw the card great started with a 2GB card format ok
> > no errors in writing anything to it even did a full verify on it without
> > no error, However has soon has i reboot the RiscPC the card is blank i
> > have to go through hform again and start a fresh now i have tried this
> > with a 2GB,4GB,8GB and a 64GB card all work fine after format until i
> > reboot the RiscPC.
> When you say it's 'blank', what do you mean? 'Disc not recognised, has it
> been formatted?' message? Or correctly showing as an ADFS drive but just
> with an empty Filer window?
>
> Which 'verify' was it - from the Filer menu? The 'soak test' options in
> HForm are useless these days.
> > Machine RiscPC running RiscOS 4.02, hform version 2.75
> > Hform gives the following layout for a 64GB card
> >
> > cylinder 3812
> > heads 16
> > sectors per track 128
> Those numbers are pretty meaningless these days but indicate a 4GB drive.
> You need to format it with LBA enabled - I'm not sure if that's an option
> your version of HForm offers?
>
> As you say formatting succeeds and it shows up as a drive, can you write a
> few GB to it without errors? Can you read them back successfully?
>
> Theo
Hi Theo,

after I reboot a I get 'Disc not recognised, has it been formatted?'

I used the verify from the ADFS filler window

and yes LBA was set to 1 which is on

yes I have written a few GB to it and copied it back with no errors,

Something else I tried was format on the Pi4 and copied contents to the SD card worked on RiscPC first boot, second boot 'Disc not recognised, has it been formatted?'

Thank You.

Martin Taylor <mtaylor141273@gmail.com> wrote:
> Hi Theo,
>
> after I reboot a I get 'Disc not recognised, has it been formatted?'
>
> I used the verify from the ADFS filler window
>
> and yes LBA was set to 1 which is on
>
> yes I have written a few GB to it and copied it back with no errors,

Did you try this with several cards?

> Something else I tried was format on the Pi4 and copied contents to the SD card worked on RiscPC first boot, second boot 'Disc not recognised, has it been formatted?'

I suspect the data is there but detecting the disc at boot, or its shape,
isn't working. Can you put it back in the Pi and read the data afterwards?

Try *Configure ADFSBuffers 0 as a quick test.

Theo

On Friday, 14 May 2021 at 15:25:54 UTC, Theo wrote:
> Martin Taylor <mtaylo...@gmail.com> wrote:
> > Hi Theo,
> >
> > after I reboot a I get 'Disc not recognised, has it been formatted?'
> >
> > I used the verify from the ADFS filler window
> >
> > and yes LBA was set to 1 which is on
> >
> > yes I have written a few GB to it and copied it back with no errors,
> Did you try this with several cards?
> > Something else I tried was format on the Pi4 and copied contents to the SD card worked on RiscPC first boot, second boot 'Disc not recognised, has it been formatted?'
> I suspect the data is there but detecting the disc at boot, or its shape,
> isn't working. Can you put it back in the Pi and read the data afterwards?
>
> Try *Configure ADFSBuffers 0 as a quick test.
>
> Theo
Right still getting the same error with configure adfsbuffers 0
yes i can still read the sdcard and pull data off it after on the Pi4

I can go into acorn menu tell it to shutdown then click on retstart and the sdcard is still there and can read write to it same if i do a shift break or even a control break the card is still there and useable, its only when i kill power to the machine that it stops working .Thank You

On Friday, 14 May 2021 at 17:16:01 UTC, Martin Taylor wrote:
> On Friday, 14 May 2021 at 15:25:54 UTC, Theo wrote:
> > Martin Taylor <mtaylo...@gmail.com> wrote:
> > > Hi Theo,
> > >
> > > after I reboot a I get 'Disc not recognised, has it been formatted?'
> > >
> > > I used the verify from the ADFS filler window
> > >
> > > and yes LBA was set to 1 which is on
> > >
> > > yes I have written a few GB to it and copied it back with no errors,
> > Did you try this with several cards?
> > > Something else I tried was format on the Pi4 and copied contents to the SD card worked on RiscPC first boot, second boot 'Disc not recognised, has it been formatted?'
> > I suspect the data is there but detecting the disc at boot, or its shape,
> > isn't working. Can you put it back in the Pi and read the data afterwards?
> >
> > Try *Configure ADFSBuffers 0 as a quick test.
> >
> > Theo
> Right still getting the same error with configure adfsbuffers 0
> yes i can still read the sdcard and pull data off it after on the Pi4
>
> I can go into acorn menu tell it to shutdown then click on retstart and the sdcard is still there and can read write to it same if i do a shift break or even a control break the card is still there and useable, its only when i kill power to the machine that it stops working .Thank You

Sorry forgot you asked about did i try this with more cards yes a range of cards from 2GB all the way up to 64GB

In article <0b10fe8d-199c-4cda-a54d-251eefe83f59n@googlegroups.com>,
Martin Taylor <URL:mailto:mtaylor141273@gmail.com> wrote:
> On Friday, 14 May 2021 at 17:16:01 UTC, Martin Taylor wrote:
> > On Friday, 14 May 2021 at 15:25:54 UTC, Theo wrote:
> > > Martin Taylor <mtaylo...@gmail.com> wrote:
> > > > Hi Theo,
> > > >
> > > > after I reboot a I get 'Disc not recognised, has it been formatted?'
> > > >
> > > > I used the verify from the ADFS filler window
> > > >
> > > > and yes LBA was set to 1 which is on
> > > >
> > > > yes I have written a few GB to it and copied it back with no errors,
> > > Did you try this with several cards?
> > > > Something else I tried was format on the Pi4 and copied contents to the SD card
> worked on RiscPC first boot, second boot 'Disc not recognised, has it been formatted?'
>
> > > I suspect the data is there but detecting the disc at boot, or its shape,
> > > isn't working. Can you put it back in the Pi and read the data afterwards?
> > >
> > > Try *Configure ADFSBuffers 0 as a quick test.
> > >
> > > Theo
> > Right still getting the same error with configure adfsbuffers 0
> > yes i can still read the sdcard and pull data off it after on the Pi4
> >
> > I can go into acorn menu tell it to shutdown then click on retstart and the sdcard i
> s still there and can read write to it same if i do a shift break or even a control br
> eak the card is still there and useable, its only when i kill power to the machine tha
> t it stops working .Thank You
>
>
> Sorry forgot you asked about did i try this with more cards yes a range of cards from
> 2GB all the way up to 64GB

Not sure if the following will be helpful or relevant.

We had a particular model of SATA SSD drive who seemed to cache writes such
that a format then restart gave unformatted and if we formatted and then
wrote a standard disc image to it, only part of it was there after a power
cycle. i.e. whatever was left in the cache wasn't being written to the media.

What chip set is on the IDE to SD interface?
I'm not sure if there is more than one, if not may be later firmware is the
cause.
Also are you trying to run it as a slave or with a slave drive attached?

Chris Evans

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