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I am new to Linux world. I am trying to dual boot my machine for Ubuntu 18.04 and Windows 10. I have done the rest of the setup accurately and I can boot to both the OS successfully. But when I check my drives I see my 1 TB HDD is invalid and some of its partitions are missing. I have windows installed on SSD and Ubuntu on HDD. I used /dev/sda/ boot loader. When I boot to windows and look for HDD it only shows SSD and the HDD- Disk 0 is shown invalid as well as few partitions of it are shown as missing. At this point, I am not sure if my Ubuntu is actually using HDD or SSD. Please help me to fix this issue OR help me diagnose this issue so that I can figure out how to fix this. I appreciate any suggestions given regarding partitions and dual boot to avoid further complications.

Pragati Bhingare
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    Welcome! Don't use windows to check disks or partitions, since it cannot see properly EXT file systems. In Ubuntu, opend Disks application and you will see all the disks' information. Ubuntu is installed under an EXT format filesystem, windows under NTFS. – schrodingerscatcuriosity Sep 13 '20 at 16:58
  • Bring up the terminal (R. click desktop), then run this command - sudo parted -l. Post output into your question. – Paul Benson Sep 13 '20 at 17:05
  • Model: ATA ST1000LM035-1RK1 (scsi) Disk /dev/sda: 1000GB Sector size (logical/physical): 512B/4096B Partition Table: gpt Disk Flags:

    Number Start End Size File system Name Flags 3 135MB 850GB 850GB ntfs LDM data partition 4 850GB 881GB 30.7GB ext4 5 881GB 885GB 4000MB linux-swap(v1) 6 885GB 885GB 308MB fat32 boot, esp 7 885GB 1000GB 115GB ext4

     – Pragati Bhingare Sep 13 '20 at 23:21
  • LDM data partition is an issue. That is dynamic partitions in Windows which only recently can even be seen with Linux. https://askubuntu.com/questions/482768/changing-windows-dynamic-disk-partition-to-basic-partition-and-not-the-full-driv & http://ubuntuforums.org/showthread.php?t=2325331&p=13492758&viewfull=1#post13492758 – oldfred Sep 14 '20 at 03:39
  • Your 1 TB disk is shown clearly in parted command. It shows a 850GB LDM Windows partition, 30.7GB and 115GB Linux partitions, 4GB swap and 308MB EFI partition. At a guess it seems that Ubuntu is on the HDD. Nothing is being shown for your SSD, that is if you posted all output for the command. And Windows cannot read ext4 partitions anyway. – Paul Benson Sep 14 '20 at 16:28
  • Thank you for your information everyone I understand it better now – Pragati Bhingare Oct 22 '20 at 15:25

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