Re: recent kernel upgrades damage mbr

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Gene Heskett wrote:

So yes, if it silently rewrote the mbr, it will just as silently rewrite the device.map, and this list will, whenever I do manage to get it booted again, hear from one very unhappy camper.

It should not re-write the device map, so I would report this as a big. The install script needs to check if there is a device map file, and honor it.

So thanks for the warning, I'm off to dd a backup of the mbr and /boot/grub to a usb key and to what is now /dev/sdc in hopes I can recover from such a boneheaded 'upgrade'.

This is not going to help, because the old MBR will be pointing to the wrong location for stage 1.5, so you will get an error on boot. Remember, the part of GRub that is in the MBR loads from a fixed disk location. It does not read the file system. So, unless stage 1.5 is in the same place on the disk, (head, cylinder, sector) it is not going to be able to load it.

Your best bet is to fix the device map, and run grub-install.

Mikkel
--

  Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!

Attachment: signature.asc
Description: OpenPGP digital signature

-- 
fedora-list mailing list
fedora-list@xxxxxxxxxx
To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
[Index of Archives]     [Older Fedora Users]     [Fedora Announce]     [Fedora Package Announce]     [EPEL Announce]     [Fedora Magazine]     [Fedora News]     [Fedora Summer Coding]     [Fedora Laptop]     [Fedora Cloud]     [Fedora Advisory Board]     [Fedora Education]     [Fedora Security]     [Fedora Scitech]     [Fedora Robotics]     [Fedora Maintainers]     [Fedora Infrastructure]     [Fedora Websites]     [Anaconda Devel]     [Fedora Devel Java]     [Fedora Legacy]     [Fedora Desktop]     [Fedora Fonts]     [ATA RAID]     [Fedora Marketing]     [Fedora Management Tools]     [Fedora Mentors]     [SSH]     [Fedora Package Review]     [Fedora R Devel]     [Fedora PHP Devel]     [Kickstart]     [Fedora Music]     [Fedora Packaging]     [Centos]     [Fedora SELinux]     [Fedora Legal]     [Fedora Kernel]     [Fedora OCaml]     [Coolkey]     [Virtualization Tools]     [ET Management Tools]     [Yum Users]     [Tux]     [Yosemite News]     [Gnome Users]     [KDE Users]     [Fedora Art]     [Fedora Docs]     [Asterisk PBX]     [Fedora Sparc]     [Fedora Universal Network Connector]     [Libvirt Users]     [Fedora ARM]

  Powered by Linux