Op Sat, 26 Sep 2009 21:29:08 +0200 schreef Baho Utot <baho-u...@columbus.rr.com>:
> Ken Moffat wrote: >> 2009/9/26 J.P.Kaper <spaky...@xs4all.nl>: >> >>> Maybe somebody else can find the right suggestion to let me solve my >>> problem. >>> >>> Hans Kaper. >>> >> >> One of the problems with usb drives is that they can >> take a long time to appear. I've never tried to boot >> from usb, but ISTR that there is a command-line argument >> to wait for the drive. >> >> A quick look in the kernel's >> Documentation/kernel-parameters.txt (you can read >> it from the tarball in 'view' if you don't have the kernel >> source tree handy) suggests boot_delay= might be >> what I'm thinking of. >> >> Perhaps try boot_delay=15 which should be a >> ridiculously long wait. If it works like that, cut it >> down until you've reduced it too far, then back off >> a bit. >> >> I expect you've already seen the following >> guides, but just in case: >> >> http://www.damnsmalllinux.org/wiki/index.php/USB_Booting >> and >> http://wiki.debian.org/BootUsb >> >> ĸen >> > > I think you may be looking for rootdelay=<seconds> > > from Documentation/kernel-parameters.txt > > rootdelay= [KNL] Delay (in seconds) to pause before attempting to > mount the root filesystem > > Others to try: > > boot_delay= Milliseconds to delay each printk during boot. > Values larger than 10 seconds (10000) are changed to > no delay (0). > Format: integer > > usb-storage.delay_use= > [UMS] The delay in seconds before a new device is > scanned for Logical Units (default 5). > The above hints were a step forward for my problem, but not the ultimate solution. Adding the kernel-parameter boot_delay=9000 and/or usb-storage.delay_use=15 changed nothing. But adding rootdelay=10 made a difference: the kernel still would not boot, but in the suggestions by the kernel of partitions to boot from, my usb-disk appeared! Adding boot_delay=9000 made no difference. So the kernel recognizes my usb-disk, but why it will not boot from there is still a puzzle to me. Copying the whole LFS-installation from a logical to a primary partition on the usb-drive made no difference. Any further ideas are very wellcome!! -- -- http://linuxfromscratch.org/mailman/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/lfs/faq.html Unsubscribe: See the above information page
