Re: HPOFS


"William L. Hartzell" schrieb:
>
> Sir:
>
> I decided to see what can be done with this file system. One can format
> a floppy with it and have EA preserved. But the usable free space on a
> 1.44 floppy is less than 1.25 MiB. From a CLI I entered Format A:
> /fs:hpofs. Format can up and said the file system for the floppy is
> FAT. I crtl-C to exit and up arrowed to recall the command (command
> history is enabled). This time the format said the file system is
> HPOFS. I said Y to format and it immediately had an error with at trap
> 000d, Sys1811. Again I up arrowed and answer Y and it formatted the
> floppy to completion. It created two boot areas and reserved space for
> directories. About 24 KiB was reserved. I copied a pdf of just over 1
> MiB in size to the floppy. When it completed, I used the WPS and double
> clicked upon the pdf to launch Acrobat4. The file loaded fine in
> Acrobat and was viewable. So the file system is usable on floppies.
>
> Next I tried to use it on DVD-Ram disk. From the CLI I entered Format
> S: /fs:hpofs. Format came up and said the file system for the disk was
> UDF. I crtl-C to exit and up arrowed again. This time format said the
> file system for the disk was HPOFS. It immediately sys1811, Trap 000D
> and exit. So I up arrowed again just as I done with the floppy, but
> alas it continued to error out. It did write the file system type to
> the disk as chkdsk showed, but that was the end of chkdsk as it quit
> with error. So it not usable with optical disks this large.
>
> So I tried a CD-RW disk to see if a smaller optical disk was usable.
> Alas, this disk presented errors F058-format unsuccessful F080-failed
> during read. I tried another disk in case that one was defective, but
> alas it failed also (same errors). So HPOFS does not like this kind of
> optical disk.
>
> Next I tried a CD-R, with the same results as with CD-RW disk. The IBM
> technical documentation says that HPOFS is usable for worm devices.
>

None of the tested media are WORMs.

Hendrik
.

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