Ne^'u ta.o mo^.t vu`ng o^? cu+'ng qua "fdisk" (vo+'i n(ew), p(artition #?), 1
...) vo+'i "drive geometry" trong "host environment" thi` sao mi`nh kho^ng ta.o
mo^.t vu`ng a?o trong "virtual environment" ? vi` vu`ng a?o na^`y, bie^?u
hie^.n qua file "c.img" cu~ng "persistent across host booting"?
"qemu -cdrom ScratchboxToolkit-2.3.iso -hda c.img 200m -m 250 -b d"
Lo+.i ddie^?m la` tra'nh ga^y kho' kha(n cho users kho^ng co`n unallocated
diskspace trong hard disks (dda so^' ngu+o+`i du`ng dde^`u va^.y!)
Vu`ng a?o "c.img" (nhi`n theo hu+o+'ng cu?a "virtual machine" la` vu`ng o^?
cu+'ng "tha^.t") ne^'u ddu+o+.c accessed by "qemu" qua la^`n boot sau!
Ki'nh cha`o!
----------------------------------------
> From: [EMAIL PROTECTED]
> To: vietlug-users@lists.sourceforge.net
> Date: Sun, 24 Sep 2006 22:40:09 +0200
> Subject: [Vietlug] đĩa ảo để khởi động với qemu
>
> Tui vừa tạo script cho phép tạo đĩa ảo,có 1 phân vùng,và có thể khởi động.
> Sau đó cài đặt từ đĩa livecd dsl-xx.iso,thế là chạy được dưói dạng
> qemu đĩa_ảo (cd ảo thì fải gọi qemu -cdrom cd_ảo !!!)
>
> I ve created a script allowing to build
> a virtual_bootable_disk from livecd_iso.(A DSL_linux_image for qemu )
> The requirements from your pc are very little:
> presence of /lib/grub/i386-pc/stage* grub stuffs, /mnt/test,
> dsl-xx.iso any xx ,qemu
> you run
> 1 mkdslvdsk dslvdisk 200
> (to create a virtual disk of 200Mb with grub installed,and inside it I store
> an install_script "instvdsk"to be used in the follow)
> 2 invoke
> qemu -m 256 -cdrom dsl-xx.iso -hdb dslvdisk
> at boot: prompt ,login console with user_dsl to preserve resource
> boot: dsl 2
> 3 #mount /dev/hdb1 /mnt/hdb1 && /mnt/hdb1/instvdsk
> this will install to virtual disk from livecd .at the end of the process (#
> prompt)
> # umont /mnt/hdb1
> 4 exit qemu instance,and launch now
> qemu dslvdisk (you now start bootup dsl_on virtual disk !)
> have fun
> I check my script on 3 differents partitions(ubuntu-6,kanotix-9 and a
> homemade_scratchbox-toolkit,and it worked
> but on another machine,I could not get a bootable vdsk !(damned fdisk,and
> geometry c-h-s stuffs !)
>
> you need to run as root (because manipulations of virtual disk
> (dd,losetup,mount...)
> The script is very short,self explanatory;I do not do anything on
> device,hdd....
> mkdslvdsk.sh
> -------------------------------cut-------
> #!/bin/bash
> # excute: " mkdslvdsk vdsk 200 " to create a virtual vdsk 200Mb bootable.
> #this script creates a virtual bootble_disk,with an install script "instvdsk"
> in side the vdisk
> #invoking "qemu -cdrom dsl-xx.iso -hdb vdsk" allows to install dsl_filesystem
> to vdsk by doing
> #" qemu -m -cdrom dsl-xx.iso -hdb vdsk" ;choose console boot: "dsl 2 " to
> get
> more resource
> #mount /dev/hdb1 /mnt/hdb1 && /mnt/hdb1/instvdsk to install
> #at the end,umount /mnt/hdb1 ;exit qemu instance
> #On pc host now start another instance with virtual disk : qemu vdsk !!!!
> partit()
> {
> echo "create a vdisk size $2 Mbytes partition 1"
> #qemu-img create $1 $2
> cnt=`expr $2 \* 2000 `
> dd if=/dev/zero of=$1 bs=512 count=$cnt
>
> cy=`expr $cnt \/ 8258 `
> #/usr/bin/expr ( $2 \/ 4 ) > cyl
>
> echo "cyl= $cy"
> fdisk -b512 -C $cy -H128 -S63 $1 << EOF
>
> n
>
> p
>
> 1
>
>
>
> a
>
> 1
>
> w
>
> EOF
> }
> fmtit()
> {
> echo " format ext2"
> losetup -d /dev/loop0 2>&1 >/dev/null
> losetup -o 32256 /dev/loop0 $1
> mke2fs /dev/loop0
> losetup -d /dev/loop0
> }
> grubit()
> {
> mount -oloop,offset=32256 $1 /mnt/test
> mkdir /mnt/test/boot
> mkdir /mnt/test/boot/grub
>
> cp -a /lib/grub/i386-pc/stage* /mnt/test/boot/grub
>
> cat > /mnt/test/boot/grub/menu.lst << EOF
> default 2
> title DSL
> kernel /boot/linux24 root=/dev/hda1 quiet vga=normal noacpi noapm nodma
> noscsi
> frugal
> init=/etc/init
> title DSL fb800x600
> kernel /boot/linux24 root=/dev/hda1 quiet vga=788 noacpi noapm nodma noscsi
> frugal
> init=/etc/init
> title DSL fb1024x768
> kernel /boot/linux24 root=/dev/hda1 quiet vga=791 noacpi noapm nodma noscsi
> frugal
> init=/etc/init
> title DSL fb1280x1024
> kernel /boot/linux24 root=/dev/hda1 quiet vga=794 noacpi noapm nodma noscsi
> frugal
> init=/etc/init
>
> EOF
> echo " (hd6) $1" > devmap
> grub --batch --no-floppy --device-map=devmap <<EOF >log
> root (hd6,0)
> setup (hd6)
> quit
> EOF
> umount /mnt/test
> }
> cr_isotohd()
> {
> mount -oloop,offset=32256 $1 /mnt/test
> cat > /mnt/test/instvdsk << EOF
> mv /mnt/hdb1/boot/grub/menu.lst /mnt/hdb1/boot/grub/menu.lst_org
> cp -a /KNOPPIX/* /mnt/hdb1
> cp -f /mnt/hdb1/boot/grub/menu.lst_org /mnt/hdb1/boot/grub/menu.lst
> cp /KNOPPIX/.bash* /mnt/hdb1
> cp /etc/fstab /mnt/hdb1/etc
> echo " x5:5:wait:/etc/init.d/xsession start" >> /mnt/hdb1/etc/inittab
> sed s/cp/#cp/ /mnt/hdb1/etc/init.d/xsession > xsession0
> mv -f xsession0 /mnt/hdb1/etc/init.d/xsession
> chmod +x /mnt/hdb1/etc/init.d/xsession
> cp /cdrom/boot/isolinux/linux24 /mnt/hdb1/boot
> mkdir /mnt/hdb1/KNOPPIX
> mkdir /mnt/hdb1/ramdisk
> #this part was reminiscent of trying to keep as closely as possible to
> dsl-xx.iso
> #meaning just modify the menu.lst from (iso)/KNOPPIX/boot/grub/
> #cp /mnt/hdb1/boot/grub/menu.lst /mnt/hdb1/boot/grub/menu.lst_org
> #sed s/hda2/hda1/g /mnt/hdb1/boot/grub/menu.lst > menuu
> #sed s_initrd_init=/etc/init_g menuu > menuv
> #sed s_/boot/minirt24.gz_ww_g menuv > menuw
> #sed s/ww// menuw > menux
> #cp -f menux /mnt/hdb1/boot/grub/menu.lst
> cd /mnt/hdb1/KNOPPIX
> ln -s ../bin bin
> ln -s ../etc etc
> EOF
> chmod +x /mnt/test/instvdsk
> umount /mnt/test
> }
> #main
> partit $1 $2
> fmtit $1
> grubit $1
> cr_isotohd $1
> exit
>
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