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Setup & Installation / Re: RAM disk and temp folders...what else?
« on: April 17, 2018, 08:22:37 am »
Why would you use HPFS386 on a ramdisk anyway ?
Optimizing sector accesses is irrelevant for a ram disk. Caching will even make things worse: you waste additional memory for no gain in speed (after all, on a ram disk, each data sector is already in memory ...)
And it does not look like the OP cares about the file access protection features that HPFS386 offers on top of HPFS.
However, I don't know if you can load HPFS.IFS and HPFS386.IFS at the same time. Most likely not ...
As to STRAT1 method: as far as I can remember from the OpenJFS code I think JFS.IFS will fall back to the STRAT1 method when it cannot find a STRAT3 (flat addressing) entry point. Of course that is irrelevant nowadays as the 32-bit (most recent) OS2DASD.DMD supports the STRAT3 entry point. But the old 16-bit version of OS2DASD.DMD did not.
On the other hand, I think that JFS.IFS will only work with the new OS2DASD.DMD + OS2LVM.DMD.
Also: VFDISK.SYS (the virtual floppy disk driver, a legacy block device driver) only supports the STRAT1 entry point. But given the fact that you can only format virtual floppies to FAT anyways that should not be a problem.
Optimizing sector accesses is irrelevant for a ram disk. Caching will even make things worse: you waste additional memory for no gain in speed (after all, on a ram disk, each data sector is already in memory ...)
And it does not look like the OP cares about the file access protection features that HPFS386 offers on top of HPFS.
However, I don't know if you can load HPFS.IFS and HPFS386.IFS at the same time. Most likely not ...
As to STRAT1 method: as far as I can remember from the OpenJFS code I think JFS.IFS will fall back to the STRAT1 method when it cannot find a STRAT3 (flat addressing) entry point. Of course that is irrelevant nowadays as the 32-bit (most recent) OS2DASD.DMD supports the STRAT3 entry point. But the old 16-bit version of OS2DASD.DMD did not.
On the other hand, I think that JFS.IFS will only work with the new OS2DASD.DMD + OS2LVM.DMD.
Also: VFDISK.SYS (the virtual floppy disk driver, a legacy block device driver) only supports the STRAT1 entry point. But given the fact that you can only format virtual floppies to FAT anyways that should not be a problem.