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I am trying to install Ubuntu 10.04 LTS on my laptop. First I installed it inside Windows and when it boots for first time I got the error message "couldn't find root filesystem , try partition table to fix the problem " . When I want to install it on a single partition (normally) and when it told me to chose a partition I don't find any partition (entire disk) .

I have 2 primary partitions and 3 logical partitions. How can I proceed with the install ?

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up vote 5 down vote accepted

Your partition table is probably bad. DO NOT write a new partition table or you will wipe out your hard drive!

The solution is repairing it. You can first try using testdisk and rewriting it, if it doesn't work you can use

fdisk -l

To check for problems on your hard drive.

For more information, see

man fdisk

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thanks martin , but how to rewrite it without wipe my hard drive ? – Radi May 10 '10 at 17:39
Check the manpages for fdisk. One thing more, remember to not do that inside the hard drive - use another hard drive, or a live-enviroment in a C or USB drive. – Martín Fixman May 10 '10 at 18:11
Before you mess with fdisk you should consider to backup your old (broken) partition table, just in case fdisk does more harm than good. – Ludwig Weinzierl May 10 '10 at 18:31
but how to backup old partition table – Radi May 11 '10 at 8:39

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