Results 1 to 4 of 4

Thread: How can I force one of two KNOPPIX filesystems to be detected

  1. #1
    Member registered user
    Join Date
    Dec 2006
    Posts
    49

    How can I force one of two KNOPPIX filesystems to be detected

    I have a KNOPPIX boot stick and a KNOPPIX boot laptop.
    If I insert the stick into the laptop and fire the laptop up and visit Boot Order I can require the stick to be detected.
    (i.e. perfectly normal KNOPPIX practice for many of us.)
    However there then seems to occur a kind of "search" and although the stick was initially engaged, it is the laptop's KNOPPIX system that is detected and utilised thereafter.
    Can I force the stick to be the platform that is used?
    (The point of doing this is that I want to mess about with the laptop's filesystem - and so I want it to be "dead" not live while I do this.)
    Thank you!

  2. #2
    Junior Member
    Join Date
    Aug 2011
    Posts
    24
    If you look at /init file of Knoppix you will see the reason. Init file accomplishes this:

    # Its purpose:
    # 1. Mounting CD, DVD, Flashdisk or network drive,
    # 2. unifying read-only compressed file system and ramdisk or file overlay,
    # 3. give control to the real sysv init, which then continues to work like
    # we booted from a single disk partition.
    Init file is part of the initrd (in a running Knoppix OS it is: /init). You have to edit initrd to edit init file. The problem is that Knoppix's busybox (which is also part of initrd) does not support UUID detection. Instead, it uses the notations like /dev/sda, /dev/sdb ... But this method is not reliable: it can produce problems in case of multiple internal disks, external drives (USB stick) if more of them contains Knoppix OS because the first found instance will be used. The ideal solution would be that Knoppix use a busybox version that supports UUID detection so that can be applied a cheat code to give the UUID of boot device. Should be done a feature request...

    But even in present situation you can solve this problem if you do not use ISO boot. Look at Knoppix cheatcodes.

    ### Configuration / Persistent image ###
    knoppix knoppix_dir=KNOPPIX Directory to search for on the CD.
    So, you have to rename your KNOPPIX directories with unique names and give the desired name as boot parameter. Of course, in case of Knoppix ISO this is impossible.
    You can use this solution only if extract the ISO content and use your own boot parameters.
    For example the ISO content is copied to a USB stick and you boot Knoppix with GRUB2 installed to that stick. And the boot params are given in grub.cfg file.
    Last edited by szzsqing1; 04-14-2022 at 11:02 AM. Reason: busibox >> busybox

  3. #3
    Junior Member
    Join Date
    Aug 2011
    Posts
    24
    Rectification: in case of ISO boot you can resolve the problem, too. You can specify the ISO image file as boot parameter:
    knoppix bootfrom=/dev/sda1/KNX.iso Access image, boot from ISO-Image
    So you can rename the ISO files or put them in directories with unique names.

  4. #4
    Member registered user
    Join Date
    Apr 2007
    Posts
    94
    You might also try to use the cheatcode fromhd

    like

    knoppix fromhd=/dev/sda1

    On my asus eeepc 900a laptop, I can boot from different filesystems (internal HD, SD card reader, usb drive) using the BBS (bios boot selector) hitting ESC on startup,

    however, that only controls the boot code. To actually select which one that knoppix uses, I have to use the fromhd parameter and I can switch between them using fromhd=(sda1, sdb1, or sdc1) (sda1 is internal, sdb1 is SD card, sdc1 is usb drive. if the SD card isn't there, the usb moves to sdb1)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


Fanxiang 4TB 2TB 1TB SSD 550MB/s 2.5'' SATA III Internal Solid State Drive lot picture

Fanxiang 4TB 2TB 1TB SSD 550MB/s 2.5'' SATA III Internal Solid State Drive lot

$188.99



Fanxiang SSD 4TB 2TB 1TB 512GB SATA SSD 2.5'' III Internal Solid State Drive lot picture

Fanxiang SSD 4TB 2TB 1TB 512GB SATA SSD 2.5'' III Internal Solid State Drive lot

$108.29



New SSD 870 EVO SATA III SSD 1TB 2.5'' Solid State Drive Upgrade PC Laptop 4TB picture

New SSD 870 EVO SATA III SSD 1TB 2.5'' Solid State Drive Upgrade PC Laptop 4TB

$59.99



Netac 2TB 1TB 512GB 240GB Internal SSD 2.5'' SATAIII 6Gb/s Solid State Drive lot picture

Netac 2TB 1TB 512GB 240GB Internal SSD 2.5'' SATAIII 6Gb/s Solid State Drive lot

$118.99



Patriot P210 128GB 256GB 512GB 1TB 2TB 2.5

Patriot P210 128GB 256GB 512GB 1TB 2TB 2.5" SATA 3 6GB/s Internal SSD PC/MAC Lot

$13.99



Fanxiang M.2 SATA SSD 2TB 1TB 512GB 256GB SSD Internal M2 Solid State Drive Lot picture

Fanxiang M.2 SATA SSD 2TB 1TB 512GB 256GB SSD Internal M2 Solid State Drive Lot

$21.99



Netac 1TB 2TB 512GB Internal SSD 2.5'' SATA III 6Gb/s Solid State Drive lot picture

Netac 1TB 2TB 512GB Internal SSD 2.5'' SATA III 6Gb/s Solid State Drive lot

$13.99



Genuine Samsung 850 EVO MZ-75E250 250GB 2.5

Genuine Samsung 850 EVO MZ-75E250 250GB 2.5" SATA III SSD Solid State Drive

$20.00



4 TB SSD SATA III Drive 2.5

4 TB SSD SATA III Drive 2.5" Solid State Drive SATAIII 6Gb/s UP to 540MB/s

$148.00



Fanxiang 2TB 1TB External SSD USB 3.2 4TB Portable Solid State Hard Drive LOT picture

Fanxiang 2TB 1TB External SSD USB 3.2 4TB Portable Solid State Hard Drive LOT

$249.99