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Search devices by file (-f, --file), filesystem label (-l, --label), or filesystem UUID (-u, --fs-uuid).
If the (-s, --set) option is used, the first device found is set as the value of environment variable var. The default variable is ‘root’.
The (-n, --no-floppy) option prevents searching floppy devices, which can be slow.
The (--efidisk-only) option prevents searching any other devices then EFI disks. This is typically used when chainloading to local EFI partition.
The (--cryptodisk-only) option prevents searching any devices other than encrypted disks. This is typically used when booting from an encrypted file system to ensure that no code gets executed from an unencrypted device having the same filesystem UUID or label.
This option implicitly invokes the command cryptocheck, if it is
available (see cryptocheck for additional information).
The ‘search.file’, ‘search.fs_label’, and ‘search.fs_uuid’ commands are aliases for ‘search --file’, ‘search --label’, and ‘search --fs-uuid’ respectively.
Also hints as to which device may be the most likely to contain the item searched for may be given via the (-h, --hint) option with a device name as an argument. If the argument ends with a comma, then partitions on the device are also searched. Furthermore, platform specific hints may be given via the options --hint-ieee1275, --hint-bios, --hint-baremetal, --hint-efi, and --hint-arc. When specified, these options take an argument and operate like --hint, but only on the specified platform.