Re: parted 1.6.6 with amiga partitioning support.

[Geert U. <ge...@li...>]

On Wed, 17 Sep 2003, Sven Luther wrote:
> Finally, i have a question concerning the partition DosType of
> partitions of the following filesystems :
> 
>   - ext3 (i used LNX\1)
>   - fat16
>   - fat32
>   - hfs (MAC\0 ?)
>   - jfs
>   - ntfs
>   - reiserfs
>   - sun-ufs
>   - hp-ufs
>   - xfs
> 
> Or maybe i could use one of the UNI\x for some of them, or some kind of
> RSV\0 (for reserved) dostype.
> 
> What is currently in use for these ?

Since AmigaOS doesn't care[*], you can use whatever you want. E.g. 0x45585433
(EXT3 in HEX ASCII) for ext3.

BTW, most of these file systems use some 32-bit magic value in their
superblock, don't they? You may want to use that one.

I think cfdisk determines the type of the partition from the superblock, since
all my Linux partitions (on ia32) have type 0x82 in the partition table, while
cfdisk identifies them as `Linux ext2' or `Linux ext3' depending on the actual
file system.

[*] AFAIK the only exception is that AmigaOS refuses to boot from a partition
    if it has a DosType for which it has no file system driver (either in ROM
    or in the RDB) and it has an `unknown' type (not 100% sure about that one,
    probably it can boot from UNI\x). So if you want to put the Lilo boot block
    on an ext2 partition, you need to use a fake DosType, or have put an
    AmigaOS ext2 driver in the RDB.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@li...

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds