Hi, russm <russm-debian-b...@slofith.org> wrote: > 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?
Hmm, I it found documented, that there *is* a limit of 255 characters for the *kernel*, but the bootloader *may* allow to exceed this. As that means, it depends on which bootloader is used, if the limit is at 255 or more, I think it is best to mention this limit of 255 chars, but I will relativise it a bit: <quote> Also there is a limit of 255 characters for the whole kernel command line, everything above this limit may be silently truncated. </quote> (note the "may" :-) ) Holger > > cheers > > Russell > > > On Mon, Jul 03, 2017 at 06:25:20AM +0200, Holger Wansing wrote: > > Control: tags -1 + pending > > > > > > russell muetzelfeldt <russm-debian-b...@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 -- ============================================================ Created with Sylpheed 3.5.0 under D E B I A N L I N U X 8 . 0 " J E S S I E " . Registered Linux User #311290 - https://linuxcounter.net/ ============================================================