Hi to all GRUB hackers !
I am not sure, if it is so simple to ignore the partition code.
I don't know it exactly (I have to ask K. Reichl), but there are
differenecs in the minix types. `0x80' represent the OLD style
classic minix type with the 64MB limimt (AFAIK) and the name
length of 14 characters. The `0x81' code repesenst (so I think)
an enhanced minix file system with name length > 14 chars, etc.
I don't know, if the minix implementation in GRUB is able to
handle this !!!!
With friendly regards
Christoph P.
OKUJI Yoshinori wrote:
>
> From: Alessandro Rubini <[EMAIL PROTECTED]>
> Subject: [patch] correctly deal with linux/minix
> Date: Sat, 9 Sep 2000 01:33:39 +0200
>
> > The reason for this is that they are type 0x81 and fsys_minix refuses
> > to deal with them. Since all minix fs's created under Linux are
> > marked 0x81 (that's what Linus told us), 0x81 must be accepted.
>
> I see. I'll check in your patch.
>
> > Personally, I'd better remove all checks about partition types
> > from the fsys_*.c files (like ffs_mount() and reiserfs_mount() that
> > have no such checks). The partition type as stored in the partition
> > table is only a hint, not authoritative information.
>
> I disagree to that partition types are not authoritative, but I have
> considered the same thing because of another reason. My point is that
> one of the advantages in GRUB is that it can rescue an unbootable
> machine, thanks to the flexibility. So I was considering if GRUB
> should be able to load a file in a disk even when the partition table
> of the disk is a bit corrupted. But, on the other hand, I didn't think
> it would be a secure way to execute a kernel image in a (possibly)
> corrupted disk. Additionally, magic numbers alone are not always
> reliable (e.g. a swap partition may have the same magic number
> accidentally). So I kept the code untouched.
>
> > didn't even remember. I don't want to be forced to enter fdisk
> > whenever I create a different filesystem on a partition, and I don't
> > want GRUB to force me to do that.
>
> The patch by Stefan Ondreji enables GRUB to modify partition tables,
> so you won't have to invoke FDISK just for changing a partition
> type. I haven't checked in his patch yet, simply because I was busy
> with other tasks.
>
> Thanks,
> Okuji
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