Hi,

I have a Raspberry Pi4 (PiHard RISCOSBits) RISC OS 5.28 Pinboard 2
120GB SSD

Doing a check with DiscKnight 1.55 threw up some nasties thus....

* 6 objects in map not referenced by directories

> File ?.File000B1ABD found

> File ?.File000B34B2 found

> File ?.File000BA4AE found

> File ?.File000BEC02 found

> File ?.File000CA319 found

> File ?.File00143D78 found

---------------------------------------------
Disc is bad, 6 faults found
Run a repair (-f and -u flags) to fix
---------------------------------------------

I kept re-booting and re-running DiscKnight.

At one point it said the files would be put in a Lost+Found directory in
the hard disc root but no such directory appeared.

The only errors now found were shown at the end of the file it generated
in the latest run which appear to be some sort of orphaned files thus

....................................................................................................

* 4838 objects in map not referenced by directories

> Directory ?.Birthday found

* Directory $.Lost+Found.Birthday parent mismatch (is &0DC29800, should
be &0DA3B000)

> Directory ?.AJC found

* Directory $.Lost+Found.AJC parent mismatch (is &0DC29800, should be
&0DA3B000)
..
> Directory ?.00000011 found

etc, etc There are 16 of these in total.

The Pi seems to be working perfectly. Any apps I use function OK. I can
save and load files without any apparent problem.

Is my disc duff or not?

DiscKnight doesn't now report any other faults. Nothing about bad disc.

How can I get rid of these objects?

Any enlightenment gratefully received.

--
Chris Newman

On 12/04/2023 21:24, Chris Newman wrote:
> Doing a check with DiscKnight 1.55 threw up some nasties thus....
>
>
> * 6 objects in map not referenced by directories

[Snip]

> I kept re-booting and re-running DiscKnight.
>
> At one point it said the files would be put in a Lost+Found directory in
> the hard disc root but no such directory appeared.

Before running DiscKnight make sure you have no other applications
running which may write to the disc, otherwise DiscKnight's fixes can be
overwritten. Run a repair with DiscKnight and immediately reboot.

The 6 objects will be placed in $.Lost+Found on the disc, they will be
untyped so you need to load them in to an editor to see if there is any
recognisable data in them. Likely they will just be junk.

> The only errors now found were shown at the end of the file it generated
> in the latest run which appear to be some sort of orphaned files thus
>
> ...................................................................................................
>
> * 4838 objects in map not referenced by directories
[Snip]
> etc, etc There are 16 of these in total.

If it started with 6 and there are now 4838, further corruption has
occurred during the rebooting.

> The Pi seems to be working perfectly. Any apps I use function OK. I can
> save and load files without any apparent problem.
>
> Is my disc duff or not?
>
> DiscKnight doesn't now report any other faults. Nothing about bad disc.

It's likely you've had a crash or power failure which has caused some
issues. While the majority of the disc may seem ok, at some point you
could come across a file or directory which will cause a hang unless it
is repaired properly.

> How can I get rid of these objects?
>
> Any enlightenment gratefully received.

DiscKnight will repair all these if you follow the procedure above, but
given the number of faults has increased, I would not trust that SD card
any longer. Get a new one and set up RISC OS on it, then copy all the
files off the old one once it's repaired. Check your backups to ensure
there are no missing files.

If you still have problems, please contact me at the support email
address given in software.

---druck

In article <u175s5$1pcj$1@dont-email.me>, druck <news@druck.org.uk> wrote:
> On 12/04/2023 21:24, Chris Newman wrote:

> DiscKnight will repair all these if you follow the procedure above, but
> given the number of faults has increased, I would not trust that SD
> card any longer. Get a new one and set up RISC OS on it, then copy all
> the files off the old one once it's repaired. Check your backups to
> ensure there are no missing files.

Thanks Druck.

It's the SSD, not the SD card.

I'm not worried about losing those files, just want to secure the disc if
possible.

I'll give DiscKnight a few more whirls as you instructed.

Thanks again.

--
Chris Newman

In article <5a94207611cvjazz@waitrose.com>, Chris Newman
<cvjazz@waitrose.com> wrote:

> I'll give DiscKnight a few more whirls as you instructed.

Slightly off piste but still relevant.

I wanted to by-pass Boot in order to run as clean a machine as possible
to run DiscKnight.

Holding down Shift at start-up got me to a star prompt. In the RISC OS 5
User Guide it doesn't mention that you have to type desktop to get going.
Perhaps that needs to be clarified in the next edition.

Yesterday that all worked fine. Today, holding down Shift doesn't work.

Is this known to be problematic?

--
Chris Newman

On 12/04/2023 21:55, druck wrote:
> On 12/04/2023 21:24, Chris Newman wrote:
>> Doing a check with DiscKnight 1.55 threw up some nasties thus....
>>
>>
>> * 6 objects in map not referenced by directories
>
> [Snip]
>
>> I kept re-booting and re-running DiscKnight.
>>
>> At one point it said the files would be put in a Lost+Found directory in
>> the hard disc root but no such directory appeared.
>
> Before running DiscKnight make sure you have no other applications
> running which may write to the disc, otherwise DiscKnight's fixes can be
> overwritten. Run a repair with DiscKnight and immediately reboot.

Looks like DiscKnight didn't actually finish running and writing back
the repair, so looking in to further with Chris.

---druck

On 13/04/2023 14:58, Chris Newman wrote:
> In article <5a94207611cvjazz@waitrose.com>, Chris Newman
> Slightly off piste but still relevant.
>
> I wanted to by-pass Boot in order to run as clean a machine as possible
> to run DiscKnight.
>
> Holding down Shift at start-up got me to a star prompt. In the RISC OS 5
> User Guide it doesn't mention that you have to type desktop to get going.
> Perhaps that needs to be clarified in the next edition.

When bypassing !Boot you can change between booting to the command
prompt or entering the desktop (or going straight in to BASIC), using
*Configure Language <n> where n is the number of the module you can find
with *ROMModules. I don't know of the default has changed recently
(recently being measured in decades now).

> Yesterday that all worked fine. Today, holding down Shift doesn't work.
>
> Is this known to be problematic?

Holding down shift can be unreliable with USB or wireless keyboards,
mashing escape during start up may work better.

---druck

In article <u19ona$1425v$1@dont-email.me>, druck <news@druck.org.uk>
wrote:
> On 13/04/2023 14:58, Chris Newman wrote:
> > In article <5a94207611cvjazz@waitrose.com>, Chris Newman Slightly off
> > piste but still relevant.
> >
> > I wanted to by-pass Boot in order to run as clean a machine as
> > possible to run DiscKnight.
> >
> > Holding down Shift at start-up got me to a star prompt. In the RISC
> > OS 5 User Guide it doesn't mention that you have to type desktop to
> > get going. Perhaps that needs to be clarified in the next edition.

> Holding down shift can be unreliable with USB or wireless keyboards,
> mashing escape during start up may work better.

Ta. That worked. I've now made a note in my User Guide.

--
Chris Newman

In article <u19ob8$14260$1@dont-email.me>, druck <news@druck.org.uk>
wrote:
> On 12/04/2023 21:55, druck wrote:
> > On 12/04/2023 21:24, Chris Newman wrote:
> >> Doing a check with DiscKnight 1.55 threw up some nasties thus....
> >>
> >>
> >> * 6 objects in map not referenced by directories
> >
> > [Snip]
> >
> >> I kept re-booting and re-running DiscKnight.
> >>
> >> At one point it said the files would be put in a Lost+Found
> >> directory in the hard disc root but no such directory appeared.
> >
> > Before running DiscKnight make sure you have no other applications
> > running which may write to the disc, otherwise DiscKnight's fixes can
> > be overwritten. Run a repair with DiscKnight and immediately reboot.

> Looks like DiscKnight didn't actually finish running and writing back
> the repair, so looking in to further with Chris.

We tried a few things but DiscKnight didn't manage to sort the problem.

I tried to add some pictures to my hard disc but it reported disc full.
looked at the icon bar menu and indeed 112GB free 112GB used 8Mb free.
I moved out 2390 Mb (2.33 GB if I've done the sums right) but it still
reports the same. my backup is only 48 GB which must be what I've
actually used so huge parts of the disc seem to be unaccesible.

Possible strategies:-

1. Format my SSD in the hopes of clearing it then copying everything back.

2. Get a new SSD. And at RISC OS bits provided the last one.

3. Use this as an excuse to get an upgraded model from Andy. (Avoiding
telling the mem sahib how much!)

--
Chris Newman

On 19 Apr, Chris Newman <cvjazz@waitrose.com> wrote:

> Get a new SSD.

The SSD in my TiMachine failed about a week ago. Got a replacement from
Amazon - 112G for �10.40 with no delivery charge as a Prime member.

Eventually got everything restored from back-up, and working fine, so
probably the cheapest option.
--
Brian Howlett - Email to From: address deleted unseen
---------------------------------------------------------
Now is the time for all good men to come to. (Walt Kelly)

Brian Howlett <news-spamtrap@brianhowlett.me.uk> wrote:
> On 19 Apr, Chris Newman <cvjazz@waitrose.com> wrote:
>
> > Get a new SSD.
>
> The SSD in my TiMachine failed about a week ago. Got a replacement from
> Amazon - 112G for ?10.40 with no delivery charge as a Prime member.
>
> Eventually got everything restored from back-up, and working fine, so
> probably the cheapest option.

+1 SSDs behaving weird could be a result of it deciding something is wrong
and going read only, or other kind of protective mode.

First thing I'd do is get a new one and copy everything over.
You are then free to muck around with the old one without fear of losing
anything.

It is possible that doing a complete zero of the entire volume will bring it
back, but if it still acts weird then it may be toast.

Theo

In article <Gcq*bGeez@news.chiark.greenend.org.uk>, Theo
<theom+news@chiark.greenend.org.uk> wrote:
> Brian Howlett <news-spamtrap@brianhowlett.me.uk> wrote:
> > On 19 Apr, Chris Newman <cvjazz@waitrose.com> wrote:
> >
> > > Get a new SSD.
> >
> > The SSD in my TiMachine failed about a week ago. Got a replacement
> > from Amazon - 112G for ?10.40 with no delivery charge as a Prime
> > member.
> >
> > Eventually got everything restored from back-up, and working fine, so
> > probably the cheapest option.

> +1 SSDs behaving weird could be a result of it deciding something is
> wrong and going read only, or other kind of protective mode.

> First thing I'd do is get a new one and copy everything over. You are
> then free to muck around with the old one without fear of losing
> anything.

> It is possible that doing a complete zero of the entire volume will
> bring it back, but if it still acts weird then it may be toast.

Thanks chaps. I'm now working on the Virtual Acorn machine.

I've been in contact with Andy at RISC OS bits and may well go for a
FAST. Then, at my leisure I can fettle the original Pi as a backup.

Brian, was it tricky to format your new disc for RISC OS? I understand
there are various versions of HForm for different machines.

--
Chris Newman

On 20 Apr, Chris Newman <cvjazz@waitrose.com> wrote:

> Brian, was it tricky to format your new disc for RISC OS? I understand
> there are various versions of HForm for different machines.

The TiMachine has two SSDs, with HForm on Drive 5. Once I had the new SSD
installed I just ran HForm on Drive 5 and initialised the new one very
quickly.

So no, if you can get HForm running on another drive.
--
Brian Howlett - Email to From: address deleted unseen
---------------------------------------------------------------
I came home from work the other day and found that someone had
stolen all my furniture, and replaced it with exact replicas...

In article <7ef32b985a.BrianNews@bhowlett.plus.net>,
Brian Howlett <news-spamtrap@brianhowlett.me.uk> wrote:
> On 20 Apr, Chris Newman <cvjazz@waitrose.com> wrote:

> > Brian, was it tricky to format your new disc for RISC OS? I understand
> > there are various versions of HForm for different machines.

> The TiMachine has two SSDs, with HForm on Drive 5. Once I had the new SSD
> installed I just ran HForm on Drive 5 and initialised the new one very
> quickly.

> So no, if you can get HForm running on another drive.

Ta. I have a backup drive which connecs to the Pi via USB. It has HForm
on it. That should work

--
Chris Newman