Boot partition corrupted on encrypted install, trouble repairing GRUB

Long story short, my boot partition got thoroughly messed up. I have an encrypted install with luks and dm-crypt. I have tried many guides for fixing grub and none are working.
Here is where I'm running into trouble:
I've booted an arch install cd, modprobe'd dm_crypt, mounted my encrypted root with cryptsetup, run arch-chroot, mounted the boot partition to /boot, run grub-install /dev/sda, and then grub-mkconfig -o /boot/grub/grub.cfg
When running grub-mkconfig I get 12 instances of "WARNING: Failed to connect to lvmetad: No such file or directory. Falling back to internal scanning." followed by "done". Upon reboot I am met with the grub prompt.
Any ideas?

OK. Well the wiki is usually more up to date and more accurate. However https://wiki.archlinux.org/index.php/Chroot says it is OK to mount them after just simpler and safer to do so before.
I am not surprised grub is unhappy - it doesn't seem to have any entries at all in grub.cfg. I guess it doesn't even give you a menu? (I am not sure how it would make one.)
Did you remember to reinstall the linux package before generating grub.cfg? That's the only thing I can think right now would cause it to just find nothing at all. I've seen it generate entries which wouldn't work but it is acting as if there is nothing there whatsoever. What is the contents of /boot? (Not everything under /boot/grub. Just the top level.)
EDIT: I only asked what happened to /boot in case it suggested any deeper problem. "Corruption" could mean hardware failure, for example. Just wiping it is not that bad . Seen much worse lately, anyway. (You could have run it on / or /home, after all.)
Last edited by cfr (2013-07-31 02:06:39)

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[SOLVED]Should /boot partition be formated in ext2 or ext4?

I used to format /boot partition in ext2 when installing Arch Linux.
Can /boot partition be formatted in ext4?
Is there any advantage when using ext4 over ext2 in /boot ?
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Last edited by yuanzhi (2012-12-22 06:01:10)

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As to ext2fs vs. ext4fs specifically, ext4fs won't have many advantages; its journal and other advanced features will be of little importance on such a small partition. Ext4fs might be a tiny bit faster, especially if you've got an EFI-based system and are using the EFI filesystem drivers, but this effect will usually be so small that it qualifies as negligible. I'm not sure about reliability, but I'd expect that any reliability problems with ext4fs would be pretty well eliminated by now.
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[SOLVED] Setting default boot partition on Macbook Pro w/ no dual boot

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Last edited by whitebrice (2015-05-31 04:31:21)

Thanks for the quick reply. I tried deleting the original boot partition, but I still had my problem. I ended up wiping all the existing partitions and trying again with gummiboot instead of rEFInd. It works now.

Data recovery from corrupt boot partition

The boot partition on my MacBook running 10.7.6 has a corrupt volume structure and will not mount, much less boot. The recovery partition boots but really doesn't let me do anything. Disk Utility can't repair nor even complete verification. I have lots of images which I need to recover, so am looking for a utility which might help.
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I'm thinking of attempting to install a system on an external boot drive and accessing the corrupt partition with a data recovery utility. Any insights, ideas or shared experiences appreciated. Thanks in advance for any desperately needed help.

The safest thing to do here is to install a new disk in the system and do a clean install of OS X. From there, you can put your corrupted volume in an external USB enclosure and mount the file system to try and recover as much data as you can.
It's likely obvious now, but it's REALLY worth investing in a large-capacity external storage or Time Capsure to use with Time Machine. Backups are essential. Hardware always eventually dies. We all need an effective strategy to deal with that.
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HD corrupt, disk utility can't repair it. can't boot.

I have a early 2009 iMac with the latest Mountain Lion update (did the last update two days ago). My HD has two partitions: one for os x and one for windows with bootcamp. I'm curently writing using the windows partition where everything works fine.
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I tried rEFIt to check if there were problems with the partitions: all ok.
I tried the fsck console command: all ok.
Now I'm in the windows partiton and if I navigate through the X partition (I have MacDrive installed) I see that some files are missing. I'm sure they should be there, but they're nowhere to be found.
Of course MacDrive tells me that the volume is damaged, etc...
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What files are missing?
Might try this...
Just recently I ran into a problem when I tried to Verify my hard disk and when it tried to verify the catalog, it responded "Invalid sibling link." Repair Disk didn't work. I searched the web and Apple's site, and couldn't find anything useful except to buy DiskWarrior or reformat the drive. Knowing that OS X is built on Unix gave me a few clues on how to proceed. The solution is pretty simple:
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http://hints.macworld.com/article.php?story=20070204093925888

Cant start up on my Macbook pro. All I get is a grey spinning wheel. Tried all the Startup key combinations and nothing works. I reset the NVRAM and nothing. I booted with start up disk , ran disk repair and all is ok. Tried to re-install OS but when I ge

Can not start up on my Macbook pro. All I get is a grey spinning wheel. Tried all the Startup key combinations and nothing works. I reset the NVRAM and nothing. I booted with start up disk , ran disk repair and all is ok. Tried to re-install OS but when I get to designating drive its blank. When I go to startup disk there is a "?" mark. When I restart under startup disk search for a drive it still comes up with nothing. Before I got the grey spinning wheel I had a locked screen. Could not move curser or click on anything. Finally just shut down. Thank you in advance for any help!

Shouldn't still have a 'beachballing'... if the drive is being found and the system is trying to boot from it but is having problems, I would suggest looking over ds store's user tip - Step by step to fix your Mac.
It's likely either something corrupt in your system files or a failing hard drive. But follow ds's steps until you find the cause of the problem.
Good luck,
Clinton

I am having trouble trying to boot from my lion osx install disk on a 2007 macbook. The disk ejects when I start up with the option key depressed. Anyone have any ideas?

I am having trouble trying to boot from my lion osx install disk on a 2007 macbook. The disk ejects when I start up with the option key depressed. Anyone have any ideas?
Thank you.

How did you get a Lion OSX install disc? They don't exist. Do you mean the gray disks that came with your 2007 MacBook?
If you mean the gray disks, try starting up with the "c" key held down.
What version of OSX is on your MacBook now? Have you tried booting from the Recovery partition?

Grub-install fails to install core.img to boot partition

I am trying to reinstall Arch onto a Dell Precision T3600 workstation, where it used to work fine, but I am stuck at the booloader step.
Details:
1. I have only one disk, partioned with gpt.
2. I am using Grub with Bios
3. As per installation instructions (preliminary requirements, BIOS systems), I created a 1007KiB boot partition at the beginning of the disk, of type ef02.
The partition (which is umber 5 in my partition table) goes from sector 34 to sector 2047
4. I mounted the root partition to /mnt, arch-chroot'd into it, and ran
# grub-install --target=i386-pc --recheck --debug /dev/sdx
# grub-mkconfig -o /boot/grub/grub.cfg
5. I generated the /boot/grub.cfg file with the recommended
# grub-mkconfig -o /boot/grub/grub.cfg
Results:
when I try to boot, grub starts, but it cannot find anything to boot from and drops me into its shell.
Furthermore (this may be unrelated), when I take a look at the dis again (after rebooting from the install disk), I see that the gpt partition table is corrupted. Exact message from gdisk is:
Caution: invalid backup GPT header, but valid main header: regenerating backup header from main header:
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: damaged
Can anyone tell me where I am going wrong? The Installation manual is not very explicit on how to deal with the (very small) boot partition. Is grub-install supposed to create the core.img file even when the partition is not mounted? Or should it be mounted. It certainly cannot contain eveyrthing that goes into /boot (which is over 100Mb).
Thanks for the help

Head_on_a_Stick wrote:
Your partition table is corrupted; you could clear it using:
# dd if=/dev/zero of=/dev/sd<x> bs=512 count=1; sync
Then use gdisk to recreate your partition table and re-install.
Alternatively, you could ask gdisk to re-create the backup GPT header from the main header: start up the program & press "r" followed by "d".
I had already fixed the partition table exactly as you suggested---sorry for not having been clear. It still does not boot.
Head_on_a_Stick wrote:
Your partition table is corrupted; you could clear it using:
If it still will not boot, post your /boot/grub/grub.cfg along with the output of:
# gdisk -l /dev/sd<x>
lsblk -f
Here they are:
/boot/grub.cfg:
# DO NOT EDIT THIS FILE
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
### BEGIN /etc/grub.d/00_header ###
insmod part_gpt
insmod part_msdos
if [ -s $prefix/grubenv ]; then
load_env
fi
if [ "${next_entry}" ] ; then
set default="${next_entry}"
set next_entry=
save_env next_entry
set boot_once=true
else
set default="0"
fi
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
else
menuentry_id_option=""
fi
export menuentry_id_option
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
if [ x$feature_default_font_path = xy ] ; then
font=unicode
else
insmod part_gpt
insmod ext2
set root='hd0,gpt3'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt3 --hint-efi=hd0,gpt3 --hint-baremetal=ahci0,gpt3 74c69286-1775-44de-90c8-3834585da6b6
else
search --no-floppy --fs-uuid --set=root 74c69286-1775-44de-90c8-3834585da6b6
fi
font="/usr/share/grub/unicode.pf2"
fi
if loadfont $font ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=en_US
insmod gettext
fi
terminal_input console
terminal_output gfxterm
if [ x$feature_timeout_style = xy ] ; then
set timeout_style=menu
set timeout=5
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
set timeout=5
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/10_linux ###
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
### BEGIN /etc/grub.d/60_memtest86+ ###
### END /etc/grub.d/60_memtest86+ ###
lsblk -f (sda1 is the swap partition, sda5 is the boot partition):
NAME FSTYPE LABEL UUID MOUNTPOINT
sda
sda1
sda3 /
sda4 /home
sda5
sr0
loop0
loop1
arch_root-image /etc/resolv.conf
loop2
arch_root-image /etc/resolv.conf
Finally, here is the partition table from gdisk -l
GPT fdisk (gdisk) version 0.8.10
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT.
Disk /dev/sda: 1953525168 sectors, 931.5 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 8B675D08-1A4A-44D3-ADC3-A7763E331455
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 1953525134
Partitions will be aligned on 8-sector boundaries
Total free space is 0 sectors (0 bytes)
Number Start (sector) End (sector) Size Code Name
1 2048 67112959 32.0 GiB 8200 Linux swap
3 67112960 276828159 100.0 GiB 8300 Linux filesystem
4 276828160 1953525134 799.5 GiB 8300 Linux filesystem
5 34 2047 1007.0 KiB EF02 BIOS boot partition

I tried partitioning my HD to install linux, the installion was not successful and now I can't boot my mac, I tried internet recovery, it was not helpfull as the disk utility cannot delete the partition I created.

I tried partitioning my HD to install linux, the installion was not successful and now I can't boot my mac, I tried internet recovery, it was not helpfull as the disk utility cannot delete the partition I created. It was only showing me an error message "EFI files are missing", I realized that it is trying to boot from the new partition I created for the installation of the linux I intended to do.

It sounds like you may have multiple problems, but none of them are likely to be caused by malware.
First, the internet-related issues may be related to adware or a network compromise. I tend to lean more towards the latter, based on your description of the problem. See:
http://www.adwaremedic.com/kb/baddns.php
http://www.adwaremedic.com/kb/hackedrouter.php
If investigation shows that this is not a network-specific issue, then it's probably adware. See my Adware Removal Guide for help finding and removing it. Note that you mention AdBlock as if it should have prevented this, but it's important to understand that ad blockers do not protect you against adware in any way. Neither would any kind of anti-virus software, which often doesn't detect adware.
As for the other issues, it sounds like you've got some serious corruption. I would be inclined to say it sounds like a failing drive, except it sounds like you just got it replaced. How did you get all your files back after the new drive was installed?
(Fair disclosure: I may receive compensation from links to my sites, TheSafeMac.com and AdwareMedic.com, in the form of buttons allowing for donations. Donations are not required to use my site or software.)

/boot partition on USB disc for encryption scheme

Hello archers!
i have recently embarked on a project to create a fully encrypted harddrive with the boot routine entirely on a USB pen, as described in this guide
http://linuxreviews.org/howtos/security … ex.html.en
Now, seeing as Loop-AES is not supported in arch, it would mean i'd have to rebuild util-linux amongst other things, and it would be a hassle to maintain. I have taken a look at the dm-crypt + LUKS approach on the wiki, and i was wondering if it was possible to move the /boot partition to the USB pen along with a keyfile and the nessecary routines to make it boot? And if i can, could anyone give me some pointers as to how?

As I have done exactly that - yes.
(well, with CF cards and not USB pen, but since the controller is USB it's technically the same)
First, prepare the USB stick.
- zero it: 'dd if=/dev/zero of=/dev/sdX (<- careful here!) bs=4M'
- put a partition on it; I used cfdisk, normal Linux type 83, and marked it bootable (not really necessary, but hey ;)
- put a filesystem on it; I used plain Ext2 minus all the fancy new stuff (no journal, no 256-byte inodes, no resize_inode, no dir_index, no reserved blocks...)
- make it bootable; I used Grub and had a hard time until I finally got to the normal Grub menu, but I don't remember why ... sorry ^.^
On the topic of Grub, you need a menu.lst:
title Arch Linux
root (hd0,0)
kernel /vmlinuz26 cryptkey=/dev/disk/by-uuid/<UUID-of-Ext2fs-On-UsbPen>:ext2:cryptvg.key cryptdevice=/dev/disk/by-uuid/<UUID-of-Encrypted-RootDisk>:vg root=/dev/mapper/vg-root ro radeon.modeset=1 # okay, KMS is a bit off-topic... :p
initrd /kernel26.img
That's already full-featured, as my setup uses a keyfile instead of a passphrase, and it's an LVM-on-LUKS setup.
Scrap the "cryptkey=..." if you want to input a passphrase on boot.
You really want to use the UUID scheme and for that, 'blkid' is your friend.
Next up is the initramfs, so edit /etc/mkinitcpio.conf.
I tend to keep it minimal (my CF card is not exactly huge - 8 MB ;-) so only the really required modules and hooks:
-> MODULES="intel-agp radeon ehci-hcd usb-storage ext2 sd_mod ahci jfs"
The first two because I want early KMS, the next two to recognize the USB reader, ext2 to read the keyfile, sd_mod is mandatory and you'd have to modify the last two for your setup - type of IDE/SATA controller and root filesystem
-> CRYPTO_MODULES="aes-i586 xts"
Pretty straightforward - you can simply omit the line, the image will just get a bit larger
-> HOOKS="base consolefont udev encrypt lvm2"
Simple again - you always want "base+udev", it's LUKS encrypted and in there lies the LVM stuff; "consolefont" just in case, so you have the same keyboard layout as in /etc/rc.conf right from the start.
-> COMPRESSION="lzma"
8 MB CF card, remember? >.<
Now rebuild the image: 'mkinitcpio -p kernel26' (or specify its location directly with -g)
Last but not least put the /boot stuff (minimum: System.map26, vmlinuz, kernel26.img and the grub/ dir) on the stick and have fun rebooting! :-p
You also might want to read the relevant wiki article a few times more, just in case.
And one final note: I didn't do this with a fresh install, but converted an existing Arch setup to LUKS+LVM after getting a new machine, so I can't say how this would work together with the current installer.
Last edited by byte (2010-05-31 01:43:46)

The description for Event ID 0 from source VSTTExecution cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.

Hi,
Can any one help me on the below issue ?
while executing automated test case in test center it is showing as test case is in progress, then i navigated to virtual machine (where the test agent is online), there Internet
explore has opened automatically and my test case execution started, but with in a seconds IE has closed . However, in test center, test case status is showing as in
progress, after 2 or 3 min some of test cases getting passed and some are failed.
Here my question is in lab center-->virtual machine, IE has opened automatically and navigated the 2 or 3 links and with in seconds IE has getting closed. Why IE is getting closed without completing execution?
Error Message :
The description for Event ID 0 from source VSTTExecution cannot be found. Either the component that raises this event is not installed on your local computer or the
installation is corrupted. You can install or repair the component on the local computer.
If the event originated on another computer, the display information had to be saved with the event.
The following information was included with the event:
(mtm.exe, PID 5240, Thread 4) FileAggregatorSessionInfo: Error occurred while deleting temporary directoryException: System.IO.DirectoryNotFoundException: Could not find a part of the path
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.Directory.Delete(String fullPath, String userPath, Boolean recursive, Boolean checkHost)
at Microsoft.VisualStudio.TestTools.Execution.Aggregation.FileAggregator.FileAggregatorSessionInfo.DeleteTemporaryDirectory(String temporaryDirectory)
the message resource is present but the message is not found in the string/message table
Thanks
Suresh
Suresh

Hi,
Can any one help me on the below issue ?
while executing automated test case in test center it is showing as test case is in progress, then i navigated to virtual machine (where the test agent is online), there Internet
explore has opened automatically and my test case execution started, but with in a seconds IE has closed . However, in test center, test case status is showing as in
progress, after 2 or 3 min some of test cases getting passed and some are failed.
Here my question is in lab center-->virtual machine, IE has opened automatically and navigated the 2 or 3 links and with in seconds IE has getting closed. Why IE is getting closed without completing execution?
Error Message :
The description for Event ID 0
from source VSTTExecution cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.
If the event originated on another computer, the display information had to be saved with the event.
The following information was included with the event:
(mtm.exe, PID 5240, Thread 4) FileAggregatorSessionInfo: Error occurred while deleting temporary directoryException: System.IO.DirectoryNotFoundException:
Could not find a part of the path
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.Directory.Delete(String fullPath, String userPath, Boolean recursive, Boolean checkHost)
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QTAgentService.exe, AgentProcessManager.PerformActionIgnoringExceptions: Successfully called 'Cleanup' on the test agent
QTAgentService.exe, AgentProcessManager.PerformActionIgnoringExceptions: Calling 'StopDataCollection(int)' on the data collection agent
QTAgentService.exe, AgentProcessManager.IsDataCollectionAgentNeeded: IsExecutedOutOfProc? True
QTAgentService.exe, AgentPro
QTAgentService.exe, AgentProcessManager.WaitForDataCollectionAgentProcessToStart: Agents started.
QTAgentService.exe, AgentService: Connection to controller is up.
Thanks
Suresh

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