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en:guides:bootguide [2011/05/15 14:12] linea created |
en:guides:bootguide [2020/03/15 12:59] (current) bellard [SliTaz ISO image boot tricks] |
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| + | ==== From BIOS to /etc/init.d/rcS ==== | ||
| <code> | <code> | ||
| - | CPU | + | CPU |
| - | | | + | | |
| - | V | + | V |
| - | ----------BIOS-------- | + | +------------------BIOS----------------+ |
| - | / | \ | + | | | | | |
| - | V | | | + | V V V V |
| - | Hard Disk V V | + | Floppy Hard Disk Versatile PXE (4) |
| - | CD-ROM <--- Floppy ---> PXE | + | set (3) DVD/CD-ROM <- Floppy (2) --> or |
| - | USB | | | + | | USB key WEB boot |
| - | V (set) V / | + | V V | |
| - | \ / / | + | +-------------+ +--------------+ |
| - | Boot Sector / | + | | V | |
| - | \ / | + | V PXE forwarder (5) V |
| - | V V | + | Boot Sector | | |
| - | - Boot loader - | + | | V | |
| - | / \ | + | +-------------------------------+ |
| - | Frugal or Uncommon: Installed: load | + | | |
| - | Kernel+rootfs Kernel only | + | Already running Kernel V |
| - | | | | + | V | |
| - | V | | + | +------KEXEC (8) Boot loader |
| - | Run /init V | + | | | |
| - | | Mount root | + | +-----+------------+---------+ |
| - | V filesystem | + | | | |
| - | Create tmpfs | | + | V V |
| - | / | \ | | + | Frugal/Uncommon(1): Installed: |
| - | V | V | | + | load Kernel+initramfs load Kernel only |
| - | Loram: | Uncommon: V | + | | | |
| - | Mount aufs | run script | | + | V V |
| - | & squashfs | or driver + | | + | +--------Run /init -------------+ | |
| - | | | mount root | | + | | | | Mount root |
| - | \ | / | | + | | V | filesystem |
| - | V V V | | + | | Create tmpfs | | |
| - | Switch to new root / | + | | | | | | |
| - | \ / | + | | V V V V |
| - | \ / | + | | Loram(7): Frugal: Uncommon(1): | |
| - | \ / | + | | Mount aufs populate run script | |
| - | V V | + | | & squashfs tmpfs load modules(s) | |
| - | Run /sbin/init | + | | | | mount root | |
| - | | | + | | | | | | |
| - | V | + | V +------------+------------+ | |
| - | Run /etc/init.d/rcS | + | | | | |
| + | +------+ V V | ||
| + | | Switch to new root | | ||
| + | | | | | ||
| + | | +----------------+ | ||
| + | Tiny SliTaz(6): | | ||
| + | | V | ||
| + | | Run /sbin/init | ||
| + | | | | ||
| + | +----------------------+ | ||
| + | | | ||
| + | V | ||
| + | Run /etc/init.d/rcS | ||
| + | from /etc/inittab | ||
| + | </code> | ||
| + | |||
| + | - [[uncommoninst|Uncommon]] is LVM, RAID, crypto, loop or subdir mount with preinit rootfs. | ||
| + | - [[http://mirror.slitaz.org/boot/floppy-grub4dos|Versatile boot floppy]] | ||
| + | - [[http://mirror.slitaz.org/floppies/|Boot floppy set]]. | ||
| + | - LAN [[pxe|PXE]] or [[http://boot.slitaz.org/|WEB boot]]. | ||
| + | - [[pxe#advanced-web-booting-configuration|gpxe.pxe]]. | ||
| + | - Tiny slitaz, see http://tiny.slitaz.org/ | ||
| + | - [[lowramcd|Lowram CD]]. | ||
| + | - kexec command from the [[http://pkgs.slitaz.org/search.sh?package=kexec-tools|kexec-tools]] package. | ||
| + | |||
| + | ===== SliTaz ISO image boot tricks ===== | ||
| + | |||
| + | The cdrom image has a hybrid format from version 5.0. | ||
| + | |||
| + | * It boots from a cdrom drive according to the el-torito specification as usual (BIOS or UEFI). | ||
| + | * It boots from a memory card / USB key using the syslinux hybrid format (BIOS) or using a FAT partition mapped in the ISO image (UEFI). | ||
| + | * It launches a USB boot key creation utility from Windows (32 bits). | ||
| + | * It can boot from DOS (real mode or virtual 8086 with EMM386) directly: | ||
| + | |||
| + | <code>C:\> ren slitaz.iso slitaz.exe | ||
| + | C:\> slitaz.exe</code> | ||
| + | <note tip> | ||
| + | The files bzImage, memtest and ipxe can boot with DOS too: | ||
| + | <code>C:\> ren bzimage bzimage.exe | ||
| + | C:\> bzimage.exe root=/dev/hda3 autologin</code><code>C:\> ren memtest memtest.exe | ||
| + | C:\> memtest.exe</code><code> | ||
| + | C:\> ren ipxe ipxe.exe | ||
| + | C:\> ipxe.exe http://myserver.org/boot.php</code></note> | ||
| + | |||
| + | * It is easily customizable with the iso2exe (compatible with taziso or tazpanel/boot/ISO mine) tool: | ||
| + | |||
| + | <code>iso2exe -a "lang=fr_FR kmap=fr-latin1 tz=Europe/Paris" -i myconfig.gz slitaz.iso | ||
| + | iso2exe -l slitaz.iso | ||
| + | iso2exe -r slitaz.iso custom.append custom.initrd | ||
| + | taziso slitaz.iso getcustomconf | ||
| + | taziso slitaz.iso isomd5</code> | ||
| + | <note tip>You can tune the boot process with your own /init script: | ||
| + | <code>#!/bin/sh | ||
| - | (*) Uncommon is LVM, RAID, crypto, loop or subdir mount with preinit rootfs | + | sed -i 's,^RUN_DAEMONS=",RUN_DAEMONS="dropbear ,' /etc/rcS.conf |
| + | cat >> /etc/init.d/local.sh <<EOM | ||
| + | /my/special/inits.sh | ||
| + | EOM | ||
| + | exec /init "$@" | ||
| </code> | </code> | ||
| + | Update the kernel command line: | ||
| + | <code>iso2exe -a "rdinit=/myinit lang=fr_FR kmap=fr-latin1 tz=Europe/Paris" -i myconfig slitaz.iso -f</code></note> | ||