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Old 01-07-2012, 01:03 PM   #1
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Partition 1 does not end on cylinder boundary

Hi all,

My fdisk -l shows "Partition 1 does not end on cylinder boundary.".Now Iam not able install any new Linux distro in my system, shows my whole hard drive during partition disk,existing partitions are not listed.Any replies would be appreciated.

root@ubuntu:~# fdisk -l

Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 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: 0xbb65bb65

Device Boot Start End Blocks Id System
/dev/sda1 * 1 5099 40955904 7 HPFS/NTFS
Partition 1 does not end on cylinder boundary.
/dev/sda2 5100 5950 6835657+ 83 Linux
/dev/sda3 5951 19456 108486145 5 Extended
/dev/sda4 6194 6686 3959991 83 Linux
/dev/sda5 5951 6193 1950720 82 Linux swap / Solaris
/dev/sda6 6687 10198 28210107 7 HPFS/NTFS
/dev/sda7 10199 15297 40957686 7 HPFS/NTFS
/dev/sda8 15298 19456 33407136 7 HPFS/NTFS

Thank you
Old 01-07-2012, 03:06 PM   #2
Registered: Dec 2011
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Hello Arun,

it might be a messed up partition table as far as I can tell. Did you mix Windows and Linux software to partition your disk? I highly recommend a) backup your data b) try running TestDisk or even better, download Parted Magic which has great testing and recovery tools, new versions of fdisk etc, and of cource it includes TestDisk.

Also have a look at this, I don't know if it's exactly the same case though...
Old 01-07-2012, 03:17 PM   #3
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@ Reply

Hi Arun_kumar_k,

As I can see that all your disk space has been used by your Windows and Linux install. "Partition 1 does not end on cylinder boundary" as I can see from the output does end the cylinder boundry. But this error is common when you use "parted" utility in linux to create partition and then switch to fdisk for managing them. As I can see Partition 1 is your Windows partition and primary partition as well and the message can be considered bogus if you are able to boot into both of them.

The partition error that you are seeing could be because of the difference between the way Windows and Linux handles partition table. As long as you are able to boot into both of the OSs it should not be a problem. However, if that is not the case then there is a problem.

As you said that you are not able to install linux onto this machine. Are you trying to triple boot? Or you are trying to delete the existing linux partitions and perform a different linux distribution install? If latter is the case then do you not get option to expand hard disk and see the existing partition table? Do you get any error message. Usually during linux install if you are using GUI install then linux launch disk druid for partitioning. Are you not able to do anything with that?

Make sure that you take a good backup before trying anything
Old 01-08-2012, 07:30 AM   #4
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Re :Partition 1 does not end on cylinder boundary

Thanks all for your valuable reply.I am trying to multi boot with linux and windows,it solved the problem when I tried to "fixboot" from the Installation disk.It works now...!!.Again Thanks for the reply.


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