Virtualbox stopped working: Fatal: No bootable medium found. System halted

[Chelmite]

I'm running Ubuntu 11.10 on an x86_64 machine. The guest is Windows 7. I've been running Virtualbox 4.1.12 daily since April 3. (and earlier versions before that) I ran it 2 days ago without problems. When I ran it last night, I got the message: Fatal: No bootable medium found! System halted.

I haven't changed any of the virtualbox settings. Any idea of what's wrong? Could one of the latest updates to Ubuntu have broken virtualbox?

VB is configured as:

    IDE Controller
    IDE Secondary Master (CD/DVD): Empty
    SATA Controller
    SATA Port 0: Win7-disk1.vdi (Normal, 58.59 GB)

[Chelmite]

VBox.log file

[Frank Mehnert]

Looks like the boot record of your guest virtual hard disk cannot be recognized (anymore). At fist you should check your host file system for errors. Also check your host log files for any error messages.

And please attach the VBox.log file with the last working setup to this ticket as well (there are always the latest 4 log files stored).

[Chelmite]

Oldest vbox.log file

[Chelmite]

I ran fsck, which found and fixed some problems. Unfortunately, /var/log/fsck/* contains only "(Nothing has been logged yet.)"

[Chelmite]

Here is an older log from the VMs/Win7-bak/logs directory....

[Chelmite]

VBox.log from VMs/Win7-bak/Logs from 2012/2/12

[Frank Mehnert]

Even the VBox.log.3 logfile shows the hard disk boot error. Sorry to say that but if your host file system has errors they might be also responsible for the problem with the guest hard disk as the guest hard disk is only a normal file on the host. I suggest you restore your backup or try to repair your guest with a Windows rescue CD.

[Chelmite]

I made a copy of the damaged vdi and am trying to run Acronis Disk Director 11, which recovered two lost partitions. I tried running Win7 Repair, but it didn't work. In desperation, I'm going to try to re-install Win7 in the first partition so I don't lose my data in the 2nd partition.

[Chelmite]

How should I backup a 60G disk image?

[Frank Mehnert]

Copy it on a bigger hard disk? I mean this seriously, you can also compress the image during the copy.

[bakis]

FATAL: No bootable medium found! System halted

[bakis]

give solution