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online notes grub1 to usb device
I have a camera storage SD card that fits into an usb adaptor that bios accepts as boot drive---If I do things corrrectly. Works the same as an USB stick
This method to install may also work for netbook users who have no optical drive. Assume all commands are root so run su (or sudo su) please --------------------------------- Convert SD to linux format etc ---------------------------------- use fdisk to delete the partition and create a fresh one thats linux now add bootable flag and then write the changes to disk and quit :: Code ::
fdisk /dev/sdb -----d 1 n p 1 default-start default-full-end a w q next format it :: Code ::
mkfs.ext2 /dev/sdb1 Try to avoid re-inserting or your dev will change to sdc1 etc ------------------------------ Download a small distro and mount it ---------------------------------- I chose 165 megs Macpup_528.iso version 1 macpup.org/ :: Code ::
mkdir /tmp/iso mount -o loop Macpup_528.iso /tmp/iso --------------------------------------- copy iso files to usb device umount downloaded iso no boot folder needed ------------------------------------ :: Code ::
cd / mkdir -p /z/grub mount /dev/sdb1 /z cp /tmp/iso/vmlinuz.gz /z cp /tmp/iso/initrd.gz /z cp /tmp/iso/macpup_528.sfs /z umount /tmp/iso The squashfile needs to be in the same folder as the kernel and intrd. --------------------------------- grub legacy stuff ------------------------------- lets create one file the grub menu as its a bit different nano /z/grub/menu.lst (or whatever text editor you use instead of nano) :: Quote ::
timeout 10 default 0 color light-blue/black light-cyan/blue title Macpup 528 kernel /vmlinuz root=/dev/ram0 pmedia=usbflash initrd /initrd.gz title Macpup 528 - RAM kernel /vmlinuz root=/dev/ram0 pfix=ram pmedia=usbflash initrd /initrd.gz pmedia may mean puppy-media and the help file called help2.msg sitting in the iso says :: Quote ::
Type of media booting from. Choose one of these: usbflash usbhd usbcd ataflash atahd atacd atazip scsihd scsicd cd Because my hd is grub2, which I am not touching lets use an unpacked debian binary for grub-legacy....download ftp.iinet.net.au/debian/debian/pool/main/g/grub/grub-legacy_0.97-66_i386.deb alternative download is sourceforge.net/projects/remasterdeb/files/Sources/ Use your file manager to peek inside it ....or xarchiver. We need data folder unpacked to where we can use it. populate some grub legacy files from data folder to usb :: Code ::
mount /dev/sdb1 /z cp data/usr/lib/grub/i386-pc/* /z/grub Now lets try to install bootloader ----try at own risk----make sure you are either doing this in a vm or have the correct sd LETTER please Pay attention to the format grub-legacy sees for the target partition. My hd is ext3 and the usb is ext2....so I am safe. if below command does not work, change to execute permission chmod +x data/usr/sbin/grub :: Code ::
cd data/usr/sbin ./grub (note its dot / grub) GNU GRUB version 0.97 (640K lower / 3072K upper memory) [ Minimal BASH-like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists the possible completions of a device/filename. ] grub> root (hd1,0) Filesystem type is ext2fs, partition type 0x83 grub> setup (hd1) Checking if "/boot/grub/stage1" exists... no Checking if "/grub/stage1" exists... yes Checking if "/grub/stage2" exists... yes Checking if "/grub/e2fs_stage1_5" exists... yes Running "embed /grub/e2fs_stage1_5 (hd1)"... 17 sectors are embedded. succeeded Running "install /grub/stage1 (hd1) (hd1)1+17 p (hd1,0)/grub/stage2 /grub/menu.lst"... succeeded Done. grub> quit Now double check the grub is in mbr for your usb device :: Code ::
dd if=/dev/sdb bs=512 count=1 | strings 1+0 records in 1+0 records out 512 bytes (512 B) copied, 2.525e-05 s, 20.3 MB/s fSfQ ZRrI D|f1 GRUB Geom Hard Disk Read Error Kp2N reboot to test usb device < Edited by aus9 :: Jul 28, 12, 16:00 > Back to top |
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persistence is available thru options at shutdown (maybe reboot)
so save changes. these go into a squashfile I have put sd card back into camera. Above post works for usb stick as well. YMMV Back to top |
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