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Lost partition table according to Live USB, not according to the rest of the computer

asked 2016-03-06 06:13:19 -0500

gagbo gravatar image

Hello,

I try to reinstall Fedora on a computer that dual boots with a working W10 (I just broke the fedora partition and need to reinstall that). On my live USB, when I run KDE partition manager (after some bad operations, see Context), I have a "no valid partition table found" error on the HDD I want to install to. Which looks pretty bad. But when I try to boot on my HDD, everything is fine : Grub is found and proposes the broken Fedora and W10, and I can boot on W10 without any problem.

Can anyone explain to me how is this possible ? Because of that I can't install Fedora, and I don't really want to wipe the whole HDD because there are a lot of data on the W10 partition I don't want to lose (and I don't have backup drives right now :( )

Context

After a bad disk cloning (old and new fedora partitions -/dev/sda6 and /dev/sdb6- were linked so deleting the one on the old drive actually deleted the one on the the new drive), I needed to reinstall Fedora on my dual-boot (W10) laptop.

When I launched the KDE partition manager, I tried to move partitions around to use the new, unallocated 500GB the new drive had (can't create partitions because of 4 primaries limitation in MBR). I also wanted to delete the fedora partitions to make a new partitioning. I did a bad move at some moment : I tried to do all operations in one go, and it stopped when I tried to delete the apparently locked Fedora partition. From this point on, whenever I launch the partition manager on Live Fedora, it shows me this "no partition table" error.

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answered 2016-03-07 14:58:50 -0500

gagbo gravatar image

I think it was just because I chose to boot in UEFI on my Live USB (though I thought my bios only supports legacy), and thus the partition manager was only looking for GPT in my hard drive.

I think so because when I installed Fedora after wiping the entire HDD, the partition table system proposed by Anaconda was not an option, and always the one I used to boot the Live Key on (GPT if EFI, "MS-DOS" if Legacy)

Anyway, I won't be able to verify all these hypotheses now, so for the time being the best answer I could give is "verify that you booted on the Live Media with the correct mode"

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Asked: 2016-03-06 06:13:19 -0500

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Last updated: Mar 06 '16