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Erwan
Asked: 2016-11-10 07:32:25 +0800 CST

Ubuntu 16.04 installer cant see SSD drive previously used as RAID

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I just replaced the hard drive on my desktop with an SSD HD. Ubuntu installer doesn't find it, although when I run Ubuntu from the live CD:

  • the HD is detected in GParted, where I was able to create and format partitions.
  • It's detected by the Ubuntu disks utility as well, and the partitions can be mounted, but when I tried to write a file to it it didn't work

  • fdisk /dev/sda gives this:

    Disk /dev/sda: 139.8 GiB, 150039945216 bytes, 293046768 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x7da8b393

Device     Boot     Start       End   Sectors   Size Id Type
/dev/sda1            2048 293046271 293044224 139.8G  5 Extended
/dev/sda5            4096  71684095  71680000  34.2G 83 Linux
/dev/sda6        71686144 102406143  30720000  14.7G 83 Linux
/dev/sda7       102408192 270344191 167936000  80.1G 83 Linux
/dev/sda8       270346240 293046271  22700032  10.8G 82 Linux swap / Solaris

I tried to change the BIOS SATA parameters to ACHI and tried a few other settings (not sure what that means but saw it might be related), it didn't help.

The HD is not new, it was previously used as RAID in another computer. I don't know how this works so I have no idea if that matters?

Thanks for your help!

partitioning

2 Answers

  1. Best Answer

    If drive was previously part of a RAID set it may have RAID meta-data on it. Change example from sdx to whatever drive is sda, sdb etc.

    sudo dmraid -E -r /dev/sdx
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  2. Just do dd if=/dev/zero of=YOUR_SSD_DRIVE bs=1024k count=10 then try again. This will erase all metadata that may have been on the drive.

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