[SOLVED] qemu from partition

RedCollarPanda · 04-06-2016, 02:55 PM

Good day! I have 3 system on boot : Windows 7, Linux Mint and Linux From Scratch.

They all boot from grub.

Code:

Disk /dev/sda: 120.0 GB, 120034123776 bytes
255 heads, 63 sectors/track, 14593 cylinders, total 234441648 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xd0504817

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048      206847      102400    7  HPFS/NTFS/exFAT
/dev/sda2          206848   102402047    51097600    7  HPFS/NTFS/exFAT
/dev/sda3       102404094   234440703    66018305    5  Extended
/dev/sda5       102404096   234440703    66018304   83  Linux

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x2870e0fb

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048   620955647   310476800    7  HPFS/NTFS/exFAT
/dev/sdb2       819204094  1953523711   567159809    5  Extended
Partition 2 does not start on physical sector boundary.
/dev/sdb3       620955648   819202047    99123200   83  Linux
/dev/sdb5       819204096   834826239     7811072   82  Linux swap / Solaris
/dev/sdb6       834828288  1953523711   559347712   83  Linux

Now I want to boot Linux From Scratch from qemu. How do I do that?
I tryed

Code:

qemu-system-x86_64 -soundhw all -m 1024 -hda /dev/sdb3

but got error

Code:

no bootable devices.

jefro · 04-06-2016, 03:06 PM

Good start. However you most likely don't have grub on that drive. Also that drive may end up being relative.

When I multiboot on multiple drives I always put loaders on each drive. No loader is aware of other systems. I use bios to select on boot.

A possible solution would be to put grub on that or other loader then have to fix main loader to chain to that.

RedCollarPanda · 04-06-2016, 03:23 PM

Thank you! I'll try to add grub to /dev/sdb3