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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | .. SPDX-License-Identifier: GPL-2.0+: bootmeth command ================ Synopis ------- :: bootmeth list [-a] - list selected bootmeths (-a for all) bootmeth order "[<bm> ...]" - select the order of bootmeths\n" Description ----------- The `bootmeth` command is used to manage bootmeths. It can list them and change the order in which they are used. See :doc:`../../develop/bootstd` for more information. .. _bootmeth_order: bootmeth order ~~~~~~~~~~~~~~ Selects which bootmeths to use and the order in which they are invoked. When scanning bootdevs, each bootmeth is tried in turn to see if it can find a valid bootflow. You can use this command to adjust the order or even to omit some boomeths. The argument is a quoted list of bootmeths to use, by name. If global bootmeths are included, they must be at the end, otherwise the scanning mechanism will not work correctly. bootmeth list ~~~~~~~~~~~~~ This lists the selected bootmeths, or all of them, if the `-a` flag is used. The format looks like this: ===== === ================== ================================= Order Seq Name Description ===== === ================== ================================= 0 0 extlinunx Extlinux boot from a block device 1 1 efi EFI boot from an .efi file 2 2 pxe PXE boot from a network device 3 3 sandbox Sandbox boot for testing glob 4 efi_mgr EFI bootmgr flow ===== === ================== ================================= The fields are as follows: Order: The order in which these bootmeths are invoked for each bootdev. If this shows as a hyphen, then the bootmeth is not in the current ordering. If it shows as 'glob', then this is a global bootmeth and should be at the end. Seq: The sequence number of the bootmeth, i.e. the normal ordering if none is set Name: Name of the bootmeth Description: A friendly description for the bootmeth Example ------- This shows listing bootmeths. All are present and in the normal order:: => bootmeth list Order Seq Name Description ----- --- ------------------ ------------------ 0 0 distro Extlinux boot from a block device 1 1 efi EFI boot from an .efi file 2 2 pxe PXE boot from a network device 3 3 sandbox Sandbox boot for testing 4 4 efi_mgr EFI bootmgr flow ----- --- ------------------ ------------------ (5 bootmeths) Now the order is changed, to include only two of them:: => bootmeth order "sandbox distro" => bootmeth list Order Seq Name Description ----- --- ------------------ ------------------ 0 3 sandbox Sandbox boot for testing 1 0 distro Extlinux boot from a block device ----- --- ------------------ ------------------ (2 bootmeths) The -a flag shows all bootmeths so you can clearly see which ones are used and which are not:: => bootmeth list -a Order Seq Name Description ----- --- ------------------ ------------------ 1 0 distro Extlinux boot from a block device - 1 efi EFI boot from an .efi file - 2 pxe PXE boot from a network device 0 3 sandbox Sandbox boot for testing - 4 efi_mgr EFI bootmgr flow ----- --- ------------------ ------------------ (5 bootmeths) |