On 2021-07-26 9:34 a.m., Maciej W. Rozycki via cctalk wrote:
> On Fri, 21 May 2021, Maciej W. Rozycki wrote:
>
>> ISTR upstreaming some fixes to Linux UFS support 20+ years ago to address
>> this very problem (IIRC OSF/1 or Digital Unix CD-ROMs were also UFS, and I
>> had a need to access them
On Fri, 21 May 2021, Maciej W. Rozycki wrote:
> ISTR upstreaming some fixes to Linux UFS support 20+ years ago to address
> this very problem (IIRC OSF/1 or Digital Unix CD-ROMs were also UFS, and I
> had a need to access them under Linux for some reason) and with them in
> place I thought the
On 2021-05-20 4:49 p.m., Antonio Carlini via cctalk wrote:
>
> Great, thanks for that. I would probably have never guessed that I
> needed loop.
I'm glad it worked. I still find it illogical to loop mount a device,
but it works. I never would have figured it out on my own either. I
don't remem
On 2021-05-20 5:05 p.m., Jonathan Stone via cctalk wrote:
>
> What does one have to do (Linux, MacOS, *BSD) to write such an image
> to the CD with 512-byte blocks, so it can be read by a DEC boot-ROM?
There's nothing special needed to write the disk -- just burn it the way
you would any other
On Thu, 20 May 2021, Christian Groessler via cctalk wrote:
> IIRC I had burned the Ultrix CD "normally" (means without fiddling with block
> size, so not 512), but changed the block size to 512 for booting it. IIRC #2,
> burning was done on another drive, not the Plextor.
CD-ROM medium format ha
More top-post alert! :-)
IIRC I had burned the Ultrix CD "normally" (means without fiddling with
block size, so not 512), but changed the block size to 512 for booting
it. IIRC #2, burning was done on another drive, not the Plextor.
regards,
chris
On 5/20/21 11:26 PM, Jonathan Stone wrote
[[ apologies for top-post: Y! issue ]]
I know that to be bootable on DECstation/VAX/early Alpha, CD-ROMs needs to be
jumpered to 512-byte blocks. Like RRD4x.
Does the burning CD write need to be jumpered to 512-bytes? Or can one write on
a "normal" CD burner, then read on a 512-byte-block CD-
On 5/20/21 11:05 PM, Jonathan Stone via cctalk wrote:
MacOS (Mojave) can mount an image read from a 512-byte UFS CD.
What does one have to do (Linux, MacOS, *BSD) to write such an image to the CD
with 512-byte blocks, so it can be read by a DEC boot-ROM?
I think that's a property of the CD
MacOS (Mojave) can mount an image read from a 512-byte UFS CD.
What does one have to do (Linux, MacOS, *BSD) to write such an image to the CD
with 512-byte blocks, so it can be read by a DEC boot-ROM?
On 20/05/2021 21:11, John-Paul Stewart via cctalk wrote:
Setting ufstype=sun will indeed work for loopback mounting Ultrix CD images.
With physical CDs, the Linux CD-ROM driver expects the filesystem to use
2048 byte blocks but the UFS CDs have 512 byte blocks. So you'll also
have to add "loop
On Thu, May 20, 2021 at 04:11:18PM -0400, John-Paul Stewart via cctalk wrote:
> On 2021-05-20 4:01 p.m., Warner Losh via cctalk wrote:
> > On Thu, May 20, 2021 at 1:56 PM Antonio Carlini via cctalk <
> > cctalk@classiccmp.org> wrote:
> >
> >> I'm running Linux Mint (an ubuntu derivative) and I wan
On 2021-05-20 4:01 p.m., Warner Losh via cctalk wrote:
> On Thu, May 20, 2021 at 1:56 PM Antonio Carlini via cctalk <
> cctalk@classiccmp.org> wrote:
>
>> I'm running Linux Mint (an ubuntu derivative) and I want to mount ULTRIX
>> CDROM discs to see what I can see.
>>
>> (I'm eventually going to i
On Thu, May 20, 2021 at 02:01:21PM -0600, Warner Losh via cctalk wrote:
> On Thu, May 20, 2021 at 1:56 PM Antonio Carlini via cctalk <
> cctalk@classiccmp.org> wrote:
>
> > I'm running Linux Mint (an ubuntu derivative) and I want to mount ULTRIX
> > CDROM discs to see what I can see.
> >
> > (I'm
Ultrix UFS is 4.2SD plus some big fixes. It's definitely pre-4.3BSD. So 44BSD
won't work.
I hit fsck errors anytime I mounted Ultrix FFS read-write with (very early
NetBSD).
You may be better off if you can try with *BSD.
OSF1/Digital Unix/Tru64 has a newer FFS, definitely 4.3BSD or newer -- p
On Thu, May 20, 2021 at 1:56 PM Antonio Carlini via cctalk <
cctalk@classiccmp.org> wrote:
> I'm running Linux Mint (an ubuntu derivative) and I want to mount ULTRIX
> CDROM discs to see what I can see.
>
> (I'm eventually going to image these, but I presume that will "just
> work" with dd or ddre
I'm running Linux Mint (an ubuntu derivative) and I want to mount ULTRIX
CDROM discs to see what I can see.
(I'm eventually going to image these, but I presume that will "just
work" with dd or ddrescue).
They are supposed to be UFS format (according to the net) and that
usually means you hav
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