Stefan Schmiedl wrote: > Dale, > > Friday, April 13, 2012, 10:35:43 PM, you wrote: > >>> I have ran into a issue here. I copied everything over to sdb, my temp >>> drive. When I try to boot it, it still boots from sda which is the >>> primary drive. I can not get it to boot from the copy. I did update >>> the fstab file to point to the new sdb partitions, I use labels for that >>> and they have different names. I also edited grub and told it root was >>> sdb2. When I boot, everything mounted is sda. >>> >>> Those are from the copy. Here is grub: >>> >>> title=Initramfs-new_drive >>> root (hd0,0) >>> kernel /bzImage-3.3.1-1 root=/dev/sdb2 init=/sbin/init nox >>> initrd /initramfs-3.3.1-1-tmp.img > > if you want to boot from /dev/sdb, why do you tell grub > to use (hd0,0), which usually maps to /dev/sda1? > > I'd expect to see root (hd1,0) in there somewhere. > > Depending on boot flags and BIOS settings, you might still > be using the MBR on /dev/sda. > > When I migrated a client's data over to a new disk a while > ago, I basically used "tar cf - /sda | tar xf - -C /sdb" and > then switched SATA cables before rebooting. The former /dev/sdb > became /dev/sda and everything was fine. > > s. > >>> >>> I have done this in the past and it worked but not now. Is this the >>> init thingy mounting sda stuff and then Gentoo carries on from there? >>> If so, how do I tell the init thingy to point to sdb stuff? >>> >>> Thoughts? >>> >>> Dale >>> >>> :-) :-) >>> > > > D> OK. I thought of something else to try. I created a new grub entry. > D> This is a plain entry with no init thingy at all. It looks like this: > > D> title Gentoo no init tmp drive > D> kernel (hd0,0)/bzImage-3.3.1-1 root=/dev/sdb2 nox > > D> Simple but it still boots the sda drive instead of the sdb drive. What > D> am I missing here? I looked in dmesg, the root=/dev/sdb2 line is in > D> there so grub passes it on. > > D> This is weird. I need ideas folks. I'm running out of things to try. > > D> Dale > > D> :-) :-)
I tried changing the root line and it still booted sda. Also, note that I also tried a grub entry that doesn't even have a root line. It just points directly to sdb. >From what I have always been told, the root line points to grub not the root partition of the OS. Those are two different things. Correct me if I am wrong here. That's the way I have always been told. I'm using grub legacy here. Dale :-) :-) -- I am only responsible for what I said ... Not for what you understood or how you interpreted my words! Miss the compile output? Hint: EMERGE_DEFAULT_OPTS="--quiet-build=n"
