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I have a hard drive (/dev/sda) that is visible when I run sudo lsblk -f, but not when I run sudo fdisk -l.

What could be causing this?

All the google results I could find were about drives that were not listed with either lsblk nor fdisk.

edit to add:

When I run sudo fdisk /dev/sda, I get the error

fdisk: cannot open /dev/sda: Input/output error

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7
  • are you running fdisk as root or with sudo? Commented Aug 30, 2022 at 7:48
  • Does sudo fdisk /dev/sda -> p > Enter work? Commented Aug 30, 2022 at 8:59
  • I am running sudo lsblk -f and sudo fdisk -l Commented Aug 30, 2022 at 15:55
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    When I try running sudo fdisk /dev/sda, I get the error fdisk: cannot open /dev/sda: Input/output error. Commented Aug 30, 2022 at 15:59
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    lsblk is simply interrogating the drive identify, while fdisk actually needs to read from disk. The error you're seeing suggests that your drive may be bad. Commented Aug 30, 2022 at 20:44

1 Answer 1

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Use gdisk. It should work. This means either the disk is physically damaged, but to the extent that is it sill recognised or that partition table has been damaged in a way that fdisk is not able to recognize. fdisk will not let you in, but gdisk will.

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  • 1
    How should gdisk work if the drive is damaged? Commented Jan 13, 2023 at 7:32

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