[ale] grub rescue
Rich Faulkner
rfaulkner at Tux86.org
Wed Feb 22 15:12:36 EST 2012
I don't think the ALE Central Meeting has had this as a topic for a
while.
Michael....you have link(s) to the video you speak of?
Rich
On Wed, 2012-02-22 at 14:34 -0500, Michael Trausch wrote:
> I can present on it again at some point, if desired.
>
> I actually know of one other group of people that would be interested
> in the video of it as well... there was a thread on gentoo-user about
> grub vs. grub2 recently there.
>
> --
> Sent from my Ice Cream Sandwich-powered HTC G2
> Please excuse any typos.
>
>
> On Feb 22, 2012 11:02 AM, "Rich Faulkner" <rfaulkner at tux86.org> wrote:
>
> When I returned to Linux I tried dual booting 9.10 w/X64 but
> GRUB2 soon got the better of me. I've never really gotten the
> hang of it (but haven't spent that much time with it either).
> Having several HDD in that former system; I left X64 on one
> disk (and a borked GRUB2) and installed Fedora 12 on a
> separate HDD w/GRUB (something I was more comfortable with).
> Thus I got my Fedora installation running on a separate
> (physical) disk and GRUB chain-loading X64 from the Windows
> disk. Then I set the BIOS to boot the GRUB disk and thus I
> washed my hands of it and rarely booted into XP. (My noob
> approach to a workaround until such a time that I built a new
> machine).
>
> New machine has now been in service for a long while and I'm
> running ONLY 11.04 on it and am quite happy. I do run a
> Virtualbox VM of XP for some work that I do for a museum in
> Colorado in CorelDraw 10; but that's about how far I am
> willing to let Windows run on my machines anymore.
> Unfortunately, our studio requires baremetal installs of
> Windows for hardware support to our specialized broadcast
> audio cards. Digigram doesn't have Linux drivers for their
> PCX924 cards thus we're stuck with "Bill". We at least keep
> them offline and do all online work with Ubuntu boxes.
>
> Do we have any good GRUB2 pros in the group? Could be a good
> topic for some of us at a monthly meeting. Just a
> thought.....
>
> Rich in Lilburn
>
>
> On Tue, 2012-02-21 at 22:48 -0500, Michael Campbell wrote:
>
> > FWIW, after some scary episodes with dual booting and
> > Windows' general anti-social behavior with it, I've moved to
> > running a Windows host and my Ubuntu "machines" in a VM. A
> > Linux host with a Windows as a VM also works, but for my use
> > not as well.
> >
> >
> > With sufficient hardware, they run pretty well together, and
> > I get the best (or at least the necessary bits) from both
> > worlds, simultaneously, and I can even run my VM off a USB
> > drive and carry it around with me and have my complete
> > environment wherever I go.
> >
> >
> > I use VirtualBox as my VM container. No real problems so
> > far to speak of. I'm a Java server side developer, so am
> > running WebSphere tools and Oracle on the VM as my day to
> > day routine.
> >
> >
> > On Tue, Feb 21, 2012 at 3:51 PM, Rich Faulkner
> > <rfaulkner at tux86.org> wrote:
> >
> > ...and to think...Richard Stallman professed the use
> > of "no password" as a password to keep systems open
> > and free. Unfortunately the word "ethical" is lost
> > on too many in the world thus we are pressed to
> > encrypt our file systems.
> >
> > Glad you got your partition mounted and files
> > copied!
> >
> > As for making the drive bootable again...reinstall
> > GRUB?
> >
> > Rich
> >
> >
> >
> >
> > On Tue, 2012-02-21 at 15:28 -0500, John Pilman
> > wrote:
> >
> > > Here's an update on my progress with the scrambled partition table and
> > > encrypted home directory.
> > > Using dd I copied the hard drive and did the rest of this on the copy.
> > > I ran testdisk from a live boot usb flash drive and was able
> > > re-identify the unallocated partition as a linux partition and write
> > > the partition table.
> > > After a boot or two, gparted saw the partition as sda5.
> > > Long story short for now, Ubuntu 11.04 includes the ultility
> > > encryptfs-recover-private which was able to mount the encrypted
> > > /home/john and I have now copied my files.
> > > Caveat #1 - it took me a while to learn that my live boot usb Ubuntu
> > > 11.04 had to be 64 bit since my original partition was 64 bit.
> > > Caveat #2 - some of these steps were very time consuming.
> > >
> > > I next plan to try to see if I can make the hard drive bootable again.
> > >
> > > ...John
> > >
> > > On Sun, Feb 19, 2012 at 4:05 PM, John Pilman <jcpilman at gmail.com> wrote:
> > > > Thanks for the ideas. I am starting with a second hard drive and the
> > > > dd command as Derek said and I am going to try to recreate how I go
> > > > into this mess. Understanding, at his point, is more valuable than
> > > > the little bit of data since my last last backup.
> > > >
> > > > To partially answer some questions:
> > > > The disk started with Windows 7 and I installed Ubuntu 10.10 with dual
> > > > boot. So the partition utility is the one used during the Ubuntu
> > > > install. Also, I vaguely remember a question about encryption during
> > > > that process. I can't say for sure whether the partition or just the
> > > > home directory was encrypted.
> > > > Also, I'm not sure where the boot record was.
> > > >
> > > > If possible, I will reinstall everything and then find those answers.
> > > > At, the speed this dd is going, I have some free time to do more research.
> > > > ...John
> > > >
> > > > On Sat, Feb 18, 2012 at 7:12 PM, Jim Lynch
> > > > <ale_nospam at fayettedigital.com> wrote:
> > > >> On 02/18/2012 05:19 PM, Derek Atkins wrote:
> > > >>> Once you make your copy, try making all your unallocated space into a
> > > >>> single linux partition. Then you can dd the first few MB off into a file
> > > >>> (running a RAMDISK rescue environment, of course) and use 'file' to see if
> > > >>> you got it right. Were you using LVM? Then from there you might be able
> > > >>> to get lucky and find your partition endpoints.
> > > >> Since you can now with grub2 boot from LVM that might be the answer.
> > > >> I'm surprised that grub didn't recognize that. I'd find a live cd or
> > > >> Knopix cd that understands LVM and see if the partition contains LVM
> > > >> volumes before I did anything rash.
> > > >>
> > > >> Jim.
> > > >> _______________________________________________
> > >
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> >
> >
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