Linux change vfat label

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File Allocation Table (FAT) is a computer file system architecture and a family of industry-standard file systems utilizing it. The FAT file system is a legacy file system which is simple and robust. It offers good performance even in light-weight implementations, but cannot deliver the same performance, reliability and scalability as some modern file systems. It is, however, supported for compatibility reasons by nearly all currently developed operating systems for personal computers and many mobile devices and embedded systems, and thus is a well-suited format for data exchange between computers and devices of almost any type and age from 1981 up to the present.

File system creation

To create a FAT filesystem, install dosfstools .

mkfs.fat supports creating FAT12, FAT16 and FAT32, see Wikipedia:File Allocation Table#Types for an explanation on their differences. mkfs.fat will select the FAT type based on the partition size, to explicitly create a certain type of FAT filesystem use the -F option. See mkfs.fat(8) for more information.

Format a partition to FAT32:

Kernel configuration

Here is an example of the default mount configuration in the kernel:

A short description of the options:

Language settings: CONFIG_FAT_DEFAULT_CODEPAGE , CONFIG_FAT_DEFAULT_IOCHARSET
All filenames to lower letters on a FAT partitions if enabled: CONFIG_NCPFS_SMALLDOS
Enables support of the FAT file systems: CONFIG_FAT_FS , CONFIG_MSDOS_FS , CONFIG_VFAT_FS
Enables support of a FAT partitioned harddisks on 86x PCs: CONFIG_MSDOS_PARTITION

If the partition type detected by mount is VFAT then it will run the /usr/bin/mount.vfat script.

Writing to FAT32 as normal user

To write on a FAT32 partition, you must make a few changes to the fstab file.

The user option means that any user (even non-root) can mount and unmount the partition /dev/sdX . rw gives read-write access.

For example, if your FAT32 partition is on /dev/sda9 , and you wish to mount it to /mnt/fat32 , then you would use:

Now, any user can mount it with:

And unmount it with:

Note that FAT does not support Linux file permissions. Each file will also appear to be executable. You may want to use the showexec option to only mark Windows executables (com, exe, bat) as executable. See mount(8) for more options.

Detecting FAT type

If you need to know which type of FAT file system a partition uses, use the file command:

Alternatively you can use minfo from the mtools package:

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Persistent block device naming

This article describes how to use persistent names for your block devices. This has been made possible by the introduction of udev and has some advantages over bus-based naming. If your machine has more than one SATA, SCSI or IDE disk controller, the order in which their corresponding device nodes are added is arbitrary. This may result in device names like /dev/sda and /dev/sdb switching around on each boot, culminating in an unbootable system, kernel panic, or a block device disappearing. Persistent naming solves these issues.

Persistent naming methods

There are four different schemes for persistent naming: by-label, by-uuid, by-id and by-path. For those using disks with GUID Partition Table (GPT), two additional schemes can be used by-partlabel and by-partuuid. You can also use static device names by using Udev.

The directories in /dev/disk/ are created and destroyed dynamically, depending on whether there are devices in them.

The following sections describe what the different persistent naming methods are and how they are used.

The lsblk command can be used for viewing graphically the first persistent schemes:

For those using GPT, use the blkid command instead. The latter is more convenient for scripts, but more difficult to read.

by-label

Almost every file system type can have a label. All your volumes that have one are listed in the /dev/disk/by-label directory.

Most file systems support setting the label upon file system creation, see the man page of the relevant mkfs.* utility. For some file systems it is also possible to change the labels. Following are some methods for changing labels on common file systems:

swap swaplabel -L «new label» /dev/XXX using util-linux ext2/3/4 e2label /dev/XXX «new label» using e2fsprogs btrfs btrfs filesystem label /dev/XXX «new label» using btrfs-progs reiserfs reiserfstune -l «new label» /dev/XXX using reiserfsprogs jfs jfs_tune -L «new label» /dev/XXX using jfsutils xfs xfs_admin -L «new label» /dev/XXX using xfsprogs fat/vfat fatlabel /dev/XXX «new label» using dosfstools mlabel -i /dev/XXX ::»new label» using mtools exfat tune.exfat -L «new label» /dev/XXX using exfatprogs exfatlabel /dev/XXX «new label» using exfatprogs or exfat-utils ntfs ntfslabel /dev/XXX «new label» using ntfs-3g udf udflabel /dev/XXX «new label» using udftools crypto_LUKS (LUKS2 only) cryptsetup config —label=»new label» /dev/XXX using cryptsetup

The label of a device can be obtained with lsblk:

by-uuid

UUID is a mechanism to give each filesystem a unique identifier. These identifiers are generated by filesystem utilities (e.g. mkfs.* ) when the device gets formatted and are designed so that collisions are unlikely. All GNU/Linux filesystems (including swap and LUKS headers of raw encrypted devices) support UUID. FAT, exFAT and NTFS filesystems do not support UUID, but are still listed in /dev/disk/by-uuid/ with a shorter UID (unique identifier):

The UUID of a device can be obtained with lsblk:

The advantage of using the UUID method is that it is much less likely that name collisions occur than with labels. Further, it is generated automatically on creation of the filesystem. It will, for example, stay unique even if the device is plugged into another system (which may perhaps have a device with the same label).

The disadvantage is that UUIDs make long code lines hard to read and break formatting in many configuration files (e.g. fstab or crypttab). Also every time a volume is reformatted a new UUID is generated and configuration files have to get manually adjusted.

by-id and by-path

by-id creates a unique name depending on the hardware serial number, by-path depending on the shortest physical path (according to sysfs). Both contain strings to indicate which subsystem they belong to (i.e. pci- for by-path , and ata- for by-id ), so they are linked to the hardware controlling the device. This implies different levels of persistence: the by-path will already change when the device is plugged into a different port of the controller, the by-id will change when the device is plugged into a port of a hardware controller subject to another subsystem. [1] Thus, both are not suitable to achieve persistent naming tolerant to hardware changes.

However, both provide important information to find a particular device in a large hardware infrastructure. For example, if you do not manually assign persistent labels ( by-label or by-partlabel ) and keep a directory with hardware port usage, by-id and by-path can be used to find a particular device.[2] [3]

by-id also creates World Wide Name links of storage devices that support it. Unlike other by-id links, WWNs are fully persistent and will not change depending on the used subsystem.

This article or section needs expansion.

by-partlabel

GPT partition labels can be defined in the header of the partition entry on GPT disks.

This method is very similar to the filesystem labels, except the partition labels do not get affected if the file system on the partition is changed.

All partitions that have partition labels are listed in the /dev/disk/by-partlabel directory.

The partition label of a device can be obtained with lsblk:

by-partuuid

Like GPT partition labels, GPT partition UUIDs are defined in the partition entry on GPT disks.

MBR does not support partition UUIDs, but Linux[5] and software using libblkid[6] (e.g. udev[7]) are capable of generating pseudo PARTUUIDs for MBR partitions. The format is SSSSSSSS—PP , where SSSSSSSS is a zero-filled 32-bit MBR disk signature, and PP is a zero-filled partition number in hexadecimal form. Unlike a regular PARTUUID of a GPT partition, MBR’s pseudo PARTUUID can change if the partition number changes.

The dynamic directory is similar to other methods and, like filesystem UUIDs, using UUIDs is preferred over labels.

The partition UUID of a device can be obtained with lsblk:

Static device names with udev

Using persistent naming

There are various applications that can be configured using persistent naming. Following are some examples of how to configure them.

fstab

Kernel parameters

To use persistent names in kernel parameters, the following prerequisites must be met. On a standard installation following the installation guide both prerequisites are met:

You are using an initramfs image that has udev in it.
- For mkinitcpio, enable either the udev or systemd hook in /etc/mkinitcpio.conf

The location of the root filesystem is given by the parameter root on the kernel command line. The kernel command line is configured from the boot loader, see Kernel parameters#Configuration. To change to persistent device naming, only change the parameters which specify block devices, e.g. root and resume , while leaving other parameters as is. Various naming schemes are supported:

Persistent device naming using label and the LABEL= format, in this example Arch Linux is the LABEL of the root file system.

Persistent device naming using UUID and the UUID= format, in this example 0a3407de-014b-458b-b5c1-848e92a327a3 is the UUID of the root file system.

Persistent device naming using disk id and the /dev path format, in this example wwn-0x60015ee0000b237f-part2 is the id of the root partition.

Persistent device naming using GPT partition UUID and the PARTUUID= format, in this example 98a81274-10f7-40db-872a-03df048df366 is the PARTUUID of the root partition.

Persistent device naming using GPT partition label and the PARTLABEL= format, in this example GNU/Linux is the PARTLABEL of the root partition.

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Linux: Mount Disk Partition Using LABEL

H ow do I mount the filesystem (disk partition) using the filesystem label on the ext3/ext4 file system located on USB disk or hard disk under Linux operating systems?

The e2label command will display or set the filesystem label. The mount command has the option to mount partition that has the specified label. To see your current label type the following command:
# e2label /dev/sdc1
Sample outputs:

Syntax: Mount Command With Label

The syntax is as follows:

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To mount the /dev/sdc1 using the seagate_2tb_usb label at /media/usb, enter:
# mkdir -p /media/usb
# mount -L seagate_2tb_usb /media/usb
# df -H
Sample outputs:

Please note that my actual device name is /dev/sdf1. Feel free to replace actual label names and mount point as per your requirements.

Update /etc/fstab File

You can update the /etc/fstab file as follows to mount it automatically using the disk label:

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Business and Process integration

How to volume label (disk name) on windows and Linux of a (windows file-system, vfat)

This will only work if the disk portion is formatted on msdos file system with a label type dos

Change volume label (disk name) on windows:

Insert the disk on windows machine

Go to my computer and right click on the disk you want to re-name.
Click on rename.
Set new name

And you are done changing the disk name

Go to my computer and right click on the disk you want to re-name.
Click on properties
Under the general tab you shall see an editable text box where you can place the name of the disk
Change the name as you wish

And you are done changing the disk name

Change volume label (disk name) on Linux:

Check the disk label name: Option1

First check the disk label name using the following command

This shall display the disk label name of all the attached disk along with the device name and mount point as following:

The name found is under Label “32GB”

Check the disk label name: Option2

Alternatively, this is a little more complicated

Install the dosfstools by executing the following command:

After installation run

from this output identify the disk based on the size and device name.

In this case, it is /dev/sda1

now to check the disk name with the following command

this shall display the label of the disk

sudo dosfslabel /dev/sda1

which is “32GB” as you can see

Change the name of the disk:

To change the name of the disk you shall need to have dosfstools backage installed. If you don’t already have it install it with the following command:

Now to change the name

to see if the change has taken effect run on of the following command

Please leave a command if you find it find this post useful or want any addition input. Thanks.

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Linux change vfat label