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Accepted
Laurent
Asked: 2014-12-19 01:02:03 +0800 CST

I mixed the arguments of sgdisk -R /dev/sdY /dev/sdX

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I have two raid1 arrays and an LVM partition across both raid arrays.

A disk died and I tried to copy back the partition table of the other member to it using sgdisk -R

But I mixed the arguments, so after a reboot, the good disk seems as unusable as the bad one.

Can I fix it? I mean it was running well before I rebooted ...

partition

2 Answers

  1. You can use testdisk to recover your partition table. TestDisk is a free and open source data recovery utility it can:

    • Recover deleted partition
    • Rebuild partition table
    • Rewrite the Master boot record (MBR)

    Here a simple howto

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  2. Best Answer

    I fixed my issue.

    Luckily my second raid1 array has a totally identical partition table, so I used sgdisk (the proper way this time) copying the partition table from a disk of that other raid1.

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