Grub Rescue after (failed) Ubuntu 11.04 install alongside Windows 7
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I just attempted installing Ubuntu 11.04 alongside Windows 7 in unallocated disk space on my new computer for dual-booting.
The installation itself went smoothly until the reboot, at which point I was sent into Grub Rescue.
I'm assuming this is due to the installation failing in some way and the Windows 7 bootloader being overwritten(?).
I've booted up Ubuntu from a DVD now to post this. I also ran fdisk -l to check on my partitions, but I'm not proficient enough at this to interpret the errors - although it's pretty apparent the partitioning's not quite right. Here's the output:
[code]ubuntu@ubuntu:~$ sudo fdisk -l
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xfb11f129
Device Boot Start End Blocks Id System
/dev/sda1 1 5 40131 de Dell Utility
/dev/sda2 * 6 1735 13891584 7 HPFS/NTFS
/dev/sda3 1735 211332 1683587072 7 HPFS/NTFS
Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0a0b0000
Disk /dev/sdb doesn't contain a valid partition table
Disk /dev/dm-0: 2000.4 GB, 2000405397504 bytes
255 heads, 63 sectors/track, 243202 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 131072 bytes / 262144 bytes
Disk identifier: 0xfb11f129
Device Boot Start End Blocks Id System
/dev/dm-0p1 1 5 40131 de Dell Utility
Partition 1 does not start on physical sector boundary.
/dev/dm-0p2 * 6 1735 13891584 7 HPFS/NTFS
/dev/dm-0p3 1735 211332 1683587072 7 HPFS/NTFS
Disk /dev/dm-2: 41 MB, 41094144 bytes
255 heads, 63 sectors/track, 4 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 131072 bytes / 262144 bytes
Alignment offset: 98816 bytes
Disk identifier: 0x8a42b4c3
This doesn't look like a partition table
Probably you selected the wrong device.
Device Boot Start End Blocks Id System
/dev/dm-2p1 1880 111816 883058677+ cd Unknown
Partition 1 has different physical/logical beginnings (non-Linux?):
phys=(0, 190, 62) logical=(1879, 146, 63)
Partition 1 has different physical/logical endings:
phys=(257, 19, 50) logical=(111815, 75, 50)
Partition 1 does not end on cylinder boundary.
Partition 1 does not start on physical sector boundary.
/dev/dm-2p2 ? 33873 138704 842053558 72 Unknown
Partition 2 has different physical/logical beginnings (non-Linux?):
phys=(101, 107, 32) logical=(33872, 185, 42)
Partition 2 has different physical/logical endings:
phys=(370, 114, 47) logical=(138703, 139, 40)
Partition 2 does not end on cylinder boundary.
Partition 2 does not start on physical sector boundary.
/dev/dm-2p3 ? 69058 69060 10020+ 45 Unknown
Partition 3 has different physical/logical beginnings (non-Linux?):
phys=(68, 114, 0) logical=(69057, 206, 23)
Partition 3 has different physical/logical endings:
phys=(322, 76, 12) logical=(69059, 14, 29)
Partition 3 does not end on cylinder boundary.
Partition 3 does not start on physical sector boundary.
Disk /dev/dm-3: 14.2 GB, 14224982016 bytes
255 heads, 63 sectors/track, 1729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 131072 bytes / 262144 bytes
Disk identifier: 0x6e697373
This doesn't look like a partition table
Probably you selected the wrong device.
Device Boot Start End Blocks Id System
/dev/dm-3p1 ? 120528 234814 918008208 4f QNX4.x 3rd part
Partition 1 does not end on cylinder boundary.
Partition 1 does not start on physical sector boundary.
/dev/dm-3p2 ? 119381 153271 272218546+ 73 Unknown
Partition 2 does not end on cylinder boundary.
Partition 2 does not start on physical sector boundary.
/dev/dm-3p3 ? 113202 147075 272087568 2b Unknown
Partition 3 does not end on cylinder boundary.
Partition 3 does not start on physical sector boundary.
/dev/dm-3p4 ? 177065 177069 27487 43 Unknown
Partition 4 does not end on cylinder boundary.
Partition 4 does not start on physical sector boundary.
Partition table entries are not in disk order
Disk /dev/dm-4: 1724.0 GB, 1723993161728 bytes
255 heads, 63 sectors/track, 209596 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 131072 bytes / 262144 bytes
Disk identifier: 0x6e697373
This doesn't look like a partition table
Probably you selected the wrong device.
Device Boot Start End Blocks Id System
/dev/dm-4p1 ? 120528 234814 918008208 4f QNX4.x 3rd part
Partition 1 does not end on cylinder boundary.
Partition 1 does not start on physical sector boundary.
/dev/dm-4p2 ? 119381 153271 272218546+ 73 Unknown
Partition 2 does not end on cylinder boundary.
Partition 2 does not start on physical sector boundary.
/dev/dm-4p3 ? 113202 147075 272087568 2b Unknown
Partition 3 does not end on cylinder boundary.
Partition 3 does not start on physical sector boundary.
/dev/dm-4p4 ? 177064 177067 27487 61 SpeedStor
Partition 4 does not end on cylinder boundary.
Partition 4 does not start on physical sector boundary.
Partition table entries are not in disk order[/code]
(Note that I have 2 hard drives in RAID-0.)
Any ideas on what to look for and how to proceed to fix this?
[editline]a[/editline]
With a lot of fiddling, I got this fixed. Case closed.
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