Re: [Freedos-devel] Theory of serious LBACACHE versus El Torito driver bug? Can anybody test?

2021-06-08 Thread Bret Johnson
> That does not sound very specific either? Do you think it would> allow to > create hardware-independent USB/FireWire drivers with> BIOS support, of > course with limitations? It's not very specific -- at least not specific > enough to try and do anything with it. I think the best you could d

Re: [Freedos-devel] Theory of serious LBACACHE versus El Torito driver bug? Can anybody test?

2021-06-08 Thread tom ehlert
Hallo Herr Eric Auer, am Dienstag, 8. Juni 2021 um 20:47 schrieben Sie: > Hi Tom, >> ELTORITO does NOT create a sector oriented device, accesible by the >> kernel (or LBACACHE). it can't be accessed by INT13 READ/WRITE >> functions and so can't be cached by LBACACHE. > The workflow is that th

Re: [Freedos-devel] Theory of serious LBACACHE versus El Torito driver bug? Can anybody test?

2021-06-08 Thread Eric Auer
Hi Tom, > ELTORITO does NOT create a sector oriented device, accesible by the > kernel (or LBACACHE). it can't be accessed by INT13 READ/WRITE > functions and so can't be cached by LBACACHE. The workflow is that the boot process activates ELTORITO mode in the BIOS, which then creates an int 13

Re: [Freedos-devel] Theory of serious LBACACHE versus El Torito driver bug? Can anybody test?

2021-06-08 Thread tom ehlert
> My problem is that ELTORITO creates the possibility to have a non-FAT, > but BIOS-supported drive (which in fact represents the contents of a > CD/DVD) and I see a risk that LBACACHE would try to cache it. ELTORITO does NOT create a sector oriented device, accesible by the kernel (or LBACACHE).

Re: [Freedos-devel] Theory of serious LBACACHE versus El Torito driver bug? Can anybody test?

2021-06-08 Thread Eric Auer
Hi Bret, thanks for sharing your thoughts on this. > If the FreeDOS kernel (including the BUFFERS) and most of the utilities (like > caches) > assume 512-byte sectors without even bothering to check, it's going to create > problems. This is a problem, but in part distinct from the LBACACHE on

Re: [Freedos-devel] Theory of serious LBACACHE versus El Torito driver bug? Can anybody test?

2021-06-08 Thread Bret Johnson
I don't have a way to test, but in general agree with your assessment of the situation. If the FreeDOS kernel (including the BUFFERS) and most of the utilities (like caches) assume 512-byte sectors without even bothering to check, it's going to create problems. It's quite possible that it has

[Freedos-devel] Theory of serious LBACACHE versus El Torito driver bug? Can anybody test?

2021-06-07 Thread Eric Auer
Re-sending after the sourceforge email outage last weekend: Hi developers! Looking at the source code of the GRUB4DOS version of the ELTORITO.SYS driver, I realized that there is a risk of breaking EL TORITO access to CD content by using LBACACHE. Is there anybody with a suitable "CD authorin

[Freedos-devel] Theory of serious LBACACHE versus El Torito driver bug? Can anybody test?

2021-06-06 Thread Eric Auer
Hi developers! Looking at the source code of the GRUB4DOS version of the ELTORITO.SYS driver, I realized that there is a risk of breaking EL TORITO access to CD content by using LBACACHE. Is there anybody with a suitable "CD authoring toolchain" who could test my theory? The El Torito way of bo