X-Git-Url: https://git.grml.org/?p=grml2usb.git;a=blobdiff_plain;f=grml2usb.8.txt;h=1e7ad6dc44c81d658377c57205c9220f0c014094;hp=e26d7d358a4207b0bdf62bd3ffc33b896511c923;hb=e1e745e5fac32e36c6d80f6795bed6169aecdac8;hpb=32a796adb98b54fbde22333031e0810355ac4989 diff --git a/grml2usb.8.txt b/grml2usb.8.txt index e26d7d3..1e7ad6d 100644 --- a/grml2usb.8.txt +++ b/grml2usb.8.txt @@ -17,13 +17,11 @@ Introduction ------------ grml2usb installs grml on a given partition of your usb device and makes it -bootable. - -grml2usb provides multi-iso support, meaning you can specify several grml ISOs -on the command line at once and select the grml flavour you would like to boot -on the bootbrompt then. Notice that the default ISO (that's when pressing just -enter on the bootprompt or wait until the timeout matches) will be the *first* -one specified on the grml2usb command line. +bootable. It provides multi-iso support, meaning you can specify several grml +ISOs on the command line at once and select the grml flavour you would like to +boot on the bootbrompt then. Note that the *first* ISO specified on the grml2usb +command line will become the default one (that's the one that will boot when +just pressing enter on the bootprompt or wait until the boot timeout matches). Options ------- @@ -92,10 +90,6 @@ default any system wide (from $PATH) lilo executable is taken. If there can not be find any lilo executable the statically compiled version of the grml2usb Debian package (see /usr/share/grml2usb/lilo/lilo.static.[amd64|i386]) is taken. - *--mbr*:: - -Install a default master boot record (MBR) on the device. - *--quiet*:: Do not output anything but just errors on console. @@ -206,7 +200,7 @@ Directory layout on usb device Grabbing the source ~~~~~~~~~~~~~~~~~~~ - git clone git://git.grml.org/grml2usb.git + % git clone git://git.grml.org/grml2usb.git Developers Debugging Hints ~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -214,22 +208,64 @@ Developers Debugging Hints To play with grml2usb you can avoid using a real device via a loopback file setup, like: - dd if=/dev/zero of=~/loopback bs=1M count=100 # adjust size to your needs - losetup /dev/loop1 ~/loopback + # dd if=/dev/zero of=~/loopback bs=1M count=100 # adjust size to your needs + # losetup /dev/loop1 ~/loopback Then create according partitions either running for example: - echo -en "n\np\n1\n\n\n t \n 6\n a\n1\n w\n" | fdisk /dev/loop1 + # echo -en "n\np\n1\n\n\nt\n6\na\n1\n w\n" | fdisk /dev/loop1 or: - parted /dev/loop1 -s "mkpart primary fat16 0 -1s mkfs 1 fat16" + # parted /dev/loop1 -s "mkpart primary fat16 0 -1s mkfs 1 fat16" Finally create a filesystem and execute grml2usb as needed: - mkfs.vfat /dev/loop1 - grml2usb --bootloader-only --mbr /grml/isos/grml-small_2008.11.iso /dev/loop1 + # mkfs.vfat /dev/loop1 + # grml2usb --bootloader-only /grml/isos/grml-small_2008.11.iso /dev/loop1 + +Performance tracing +~~~~~~~~~~~~~~~~~~~ + + # blktrace -d /dev/sdb -o - | blkparse -i - + # grml2usb grml_2008.11.iso /dev/sdb1 + +Frequently Asked Questions (FAQ) +-------------------------------- + +What's the difference between grml2hd and grml2usb? +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +grml2hd installs a running grml system to a harddisk. When rebooting the +harddisk installation can be modified and changes will find their way to the +harddisk immediately. grml2usb copies just the compressed chroot filesystem +(being the squashfs file), some further informational files and a bootloader to +your device. This way you don't need as much space as with a harddisk +installation (just a USB device with >=ISO size) and when rebooting the system +your changes will be lost (even though a persistent root feature is +work-in-progress). Think of using a better CD version: booting is (usually) +faster, you don't need to burn a new CD when a new ISO version arrives (just +install the new ISO using grml2usb) and you can carry additional files on a +writable medium with yourself. +Why do I have to use a FAT16 filesystem? +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +You have to use a FAT16 filesystem if you consider using syslinux (being the +default). Syslinux currently does not support any other filesystems. If you want +to use another filesystem (like ext2/3) consider using the --grub option +instead. + +I think I've got a really cool idea! +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Please <>. Or even better: send us a patch. + +I've found a bug! +~~~~~~~~~~~~~~~~~ + +Please <>. Please provide usage examples and output +of your grml2usb commandline (consider using the "--verbose" option). Usage examples -------------- @@ -246,10 +282,10 @@ bootprompt, for grml64 use "grml64" and so on... The *first* specified ISO is the one being the default (when just pressing enter or waiting until the timeout is reached). - # grml2usb --fat16 --mbr /home/grml/grml_2008.11.iso /dev/sdb1 + # grml2usb --fat16 /home/grml/grml_2008.11.iso /dev/sdb1 -Install specified ISO on device /dev/sdb1, install MBR on /dev/sdb and -format partition /dev/sdb1 with FAT16 filesystem. +Install specified ISO on device /dev/sdb1 and format partition /dev/sdb1 with +FAT16 filesystem. # grml2usb --grub /home/grml/grml_2008.11.iso /dev/sdb1 @@ -273,10 +309,17 @@ file instead of the one provided by the ISO. Install specified ISO on device /dev/sdb1 and use "lang=de ssh=mysecret" as default bootoptions. +Online Ressources +----------------- + +Check out the link:http://grml.org/grml2usb/[grml2usb webpage] and the +link:http://git.grml.org/?p=grml2usb.git[grml2usb git repository]. + Bugs ---- -Please report feedback, link:http://grml.org/bugs/[bugreports] and wishes link:http://grml.org/contact/[to the grml-team]. +Please report feedback, bugreports and wishes <>. +[[X7]] Author ------ Michael Prokop