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raydot
March 30th, 2010, 05:32 AM
Hi All,

I'm having two distinct Grub boot errors with Ubuntu 9.10, stemming from two different setups.

Anticipating that I'll be asked I ran BootInfoScript on both setups.

This is the first setup, where I put a Flash ROM card in the Flash ROM port in front of the computer. This setup will not boot at all, and I get a message something like "Insert appropriate media and try again."



Boot Info Script 0.55 dated February 15th, 2010

============================= Boot Info Summary: ==============================


=========================== Drive/Partition Info: =============================

no valid partition table found
blkid -c /dev/null: __________________________________________________ __________

Device UUID TYPE LABEL

/dev/loop0 squashfs
/dev/ramzswap0 swap

============================ "mount | grep ^/dev output: ===========================

Device Mount_Point Type Options

aufs / aufs (rw)
/dev/sr0 /cdrom iso9660 (rw)
/dev/loop0 /rofs squashfs (rw)

=======Devices which don't seem to have a corresponding hard drive==============

no block devices found
The second setup, without the Flash ROM card inserted, boots to the GRUB rescue screen:



Boot Info Script 0.55 dated February 15th, 2010

============================= Boot Info Summary: ==============================

=> No boot loader is installed in the MBR of /dev/sda

=========================== Drive/Partition Info: =============================

Drive: sda ___________________ __________________________________________________ ___

Disk /dev/sda: 512 MB, 512483328 bytes
255 heads, 63 sectors/track, 62 cylinders, total 1000944 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x00000000

Partition Boot Start End Size Id System

Invalid MBR Signature found


blkid -c /dev/null: __________________________________________________ __________

Device UUID TYPE LABEL

/dev/loop0 squashfs
/dev/ramzswap0 swap

============================ "mount | grep ^/dev output: ===========================

Device Mount_Point Type Options

aufs / aufs (rw)
/dev/sr0 /cdrom iso9660 (rw)
/dev/loop0 /rofs squashfs (rw)

I can see there's no boot loader but have no idea how to get that working. Thanks!

oldfred
March 30th, 2010, 07:53 PM
Computers boot from the first drive in BIOS and jump to the MBR of that drive to continue to boot. Are you trying to use a flash card like a USB drive? Will your system boot that, I guess it should see it as another drive and give it as a choice. You need to follow the directions to install a boot loader to the MBR.

How to install ubuntu on USB drive and carry entire computing system in pocket?
http://ubuntuforums.org/showthread.php?t=789528
With details on some of the ccaveats, std install.
http://www.ubuntugeek.com/a-much-easier-way-to-install-ubuntu-on-a-usb-device-stick-or-hd.html
https://help.ubuntu.com/community/Installation/FromUSBStick

http://www.pendrivelinux.com/
http://unetbootin.sourceforge.net/

raydot
April 14th, 2010, 12:43 AM
Yes, I think you're right, that's what I'm trying to do in the end. Let me look into all of that and get back to you.

Thanks.