Bug#397592: installation-guide: document max. length of boot parameters
Hi Holger,
Thanks for picking up this long-stale bug :)
It looks like sometime in the intervening 10 years this restriction has
been fixed, or perhaps just lengthened, but I just booted a live CD with
GRUB and a 260 character kernel command line and it was *not* truncated.
Rather than quoting a specific 255-character limit, perhaps just mention
that particularly long kernel command lines may be silently truncated?
cheers
Russell
On Mon, Jul 03, 2017 at 06:25:20AM +0200, Holger Wansing wrote:
> Control: tags -1 + pending
>
>
> russell muetzelfeldt <russm-debian-bugs@slofith.org> suggested:
> > Package: debian-installer-manual
> >
> > Section B.2.2 (Using boot parameters to supplement preseeding) notes
> > that current kernels can accept a maximum of 32 command line options,
> > but says nothing about a maximum number of characters on the kernel
> > command line.
> >
> > There appears to be a 255 character maximum for parameters, after
> > which the kernel command line is silently truncated. I have no idea
> > if this is a limitation of the kernel, or of grub, but it should
> > probably be noted along with the 32 parameter limit.
>
> Fixed in svn.
>
>
> Holger
>
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