What is the partition type ('t' command) in fdisk good for?

up vote
2
down vote

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I can't understand the difference between the filesystem specified using fdisk's command line interface with t. And the one used to format it later using say mkefs.

Why do we need to specify it twice?

Say I launch an fdisk session using sudo fdisk /dev/sdb1

Now, I create a partition using the n command.

Then I change the file system type using the t command.

After that, I still have to format the partition and specify the file system again.

edited Mar 23 '16 at 8:42

Byte Commander

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asked Mar 23 '16 at 8:34

Abhishek Bhatia

3342935

1

Possible duplicate of What's the difference of partition type and filesystem type?
– kos
Mar 23 '16 at 8:44

add a comment |

up vote
2
down vote

favorite

I can't understand the difference between the filesystem specified using fdisk's command line interface with t. And the one used to format it later using say mkefs.

Why do we need to specify it twice?

Say I launch an fdisk session using sudo fdisk /dev/sdb1

Now, I create a partition using the n command.

Then I change the file system type using the t command.

After that, I still have to format the partition and specify the file system again.

edited Mar 23 '16 at 8:42

Byte Commander

62.1k26167279

asked Mar 23 '16 at 8:34

Abhishek Bhatia

3342935

1

Possible duplicate of What's the difference of partition type and filesystem type?
– kos
Mar 23 '16 at 8:44

add a comment |

up vote
2
down vote

favorite

I can't understand the difference between the filesystem specified using fdisk's command line interface with t. And the one used to format it later using say mkefs.

Why do we need to specify it twice?

Say I launch an fdisk session using sudo fdisk /dev/sdb1

Now, I create a partition using the n command.

Then I change the file system type using the t command.

After that, I still have to format the partition and specify the file system again.

edited Mar 23 '16 at 8:42

Byte Commander

62.1k26167279

asked Mar 23 '16 at 8:34

Abhishek Bhatia

3342935

I can't understand the difference between the filesystem specified using fdisk's command line interface with t. And the one used to format it later using say mkefs.

Why do we need to specify it twice?

Say I launch an fdisk session using sudo fdisk /dev/sdb1

Now, I create a partition using the n command.

Then I change the file system type using the t command.

After that, I still have to format the partition and specify the file system again.

partitioning filesystem fdisk

edited Mar 23 '16 at 8:42

Byte Commander

62.1k26167279

asked Mar 23 '16 at 8:34

Abhishek Bhatia

3342935

edited Mar 23 '16 at 8:42

Byte Commander

62.1k26167279

asked Mar 23 '16 at 8:34

Abhishek Bhatia

3342935

edited Mar 23 '16 at 8:42

Byte Commander

62.1k26167279

edited Mar 23 '16 at 8:42

Byte Commander

62.1k26167279

edited Mar 23 '16 at 8:42

Byte Commander

62.1k26167279

asked Mar 23 '16 at 8:34

Abhishek Bhatia

3342935

asked Mar 23 '16 at 8:34

Abhishek Bhatia

3342935

asked Mar 23 '16 at 8:34

Abhishek Bhatia

3342935

1

Possible duplicate of What's the difference of partition type and filesystem type?
– kos
Mar 23 '16 at 8:44

add a comment |

1

Possible duplicate of What's the difference of partition type and filesystem type?
– kos
Mar 23 '16 at 8:44

Possible duplicate of What's the difference of partition type and filesystem type?
– kos
Mar 23 '16 at 8:44

add a comment |

2 Answers
2

active

oldest

votes

up vote
1
down vote

When you want to change the partition type like linux to Fat,

In this case, you have use the t command to change the partition type,like below,

Device         Boot Start     End Sectors  Size Id Type

**/dev/mmcblk0p1       8096   90111   82016   40M 83 Linux**

/dev/mmcblk0p2      90112 7634943 7544832  3.6G 83 Linux



Command (m for help): t

Partition number (1,2, default 2): 1

Hex code (type L to list all codes): c



Changed type of partition 'Linux' to 'W95 FAT32 (LBA)'.



Command (m for help): p

Disk /dev/mmcblk0: 3.7 GiB, 3909091328 bytes, 7634944 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disklabel type: dos

Disk identifier: 0x1d437f06



Device         Boot Start     End Sectors  Size Id Type

**/dev/mmcblk0p1       8096   90111   82016   40M  c W95 FAT32 (LBA)**

/dev/mmcblk0p2      90112 7634943 7544832  3.6G 83 Linux

Note: I have changed the first partition to FAT32 from linux using t command to set the respective HEX code for that.

edited Nov 20 at 7:07

muru

134k19282482

answered Nov 20 at 7:04

Mathan Murugan

111

New contributor

add a comment |

up vote
0
down vote

What you specify with the t command of fdisk is the partition type. This is not related to the filesystem that is inside that partition.

The partition type is stored in the partition table and is a hint for the BIOS/EFI firmware or the OS of the content of the partition. I guess only Windows used to use it.

But this is not related of the filesystem you later create on that partition.

You could try to create an ext4 partition on a W95 FAT32 labeled partition and linux will be fine with it. This is not recommended but nothing forbids you to do so.

answered Nov 20 at 8:34

solsTiCe

5,17421845

add a comment |

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

up vote
1
down vote

When you want to change the partition type like linux to Fat,

In this case, you have use the t command to change the partition type,like below,

Device         Boot Start     End Sectors  Size Id Type

**/dev/mmcblk0p1       8096   90111   82016   40M 83 Linux**

/dev/mmcblk0p2      90112 7634943 7544832  3.6G 83 Linux



Command (m for help): t

Partition number (1,2, default 2): 1

Hex code (type L to list all codes): c



Changed type of partition 'Linux' to 'W95 FAT32 (LBA)'.



Command (m for help): p

Disk /dev/mmcblk0: 3.7 GiB, 3909091328 bytes, 7634944 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disklabel type: dos

Disk identifier: 0x1d437f06



Device         Boot Start     End Sectors  Size Id Type

**/dev/mmcblk0p1       8096   90111   82016   40M  c W95 FAT32 (LBA)**

/dev/mmcblk0p2      90112 7634943 7544832  3.6G 83 Linux

Note: I have changed the first partition to FAT32 from linux using t command to set the respective HEX code for that.

edited Nov 20 at 7:07

muru

134k19282482

answered Nov 20 at 7:04

Mathan Murugan

111

New contributor

add a comment |

up vote
1
down vote

When you want to change the partition type like linux to Fat,

In this case, you have use the t command to change the partition type,like below,

Device         Boot Start     End Sectors  Size Id Type

**/dev/mmcblk0p1       8096   90111   82016   40M 83 Linux**

/dev/mmcblk0p2      90112 7634943 7544832  3.6G 83 Linux



Command (m for help): t

Partition number (1,2, default 2): 1

Hex code (type L to list all codes): c



Changed type of partition 'Linux' to 'W95 FAT32 (LBA)'.



Command (m for help): p

Disk /dev/mmcblk0: 3.7 GiB, 3909091328 bytes, 7634944 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disklabel type: dos

Disk identifier: 0x1d437f06



Device         Boot Start     End Sectors  Size Id Type

**/dev/mmcblk0p1       8096   90111   82016   40M  c W95 FAT32 (LBA)**

/dev/mmcblk0p2      90112 7634943 7544832  3.6G 83 Linux

Note: I have changed the first partition to FAT32 from linux using t command to set the respective HEX code for that.

edited Nov 20 at 7:07

muru

134k19282482

answered Nov 20 at 7:04

Mathan Murugan

111

New contributor

add a comment |

up vote
1
down vote

When you want to change the partition type like linux to Fat,

In this case, you have use the t command to change the partition type,like below,

Device         Boot Start     End Sectors  Size Id Type

**/dev/mmcblk0p1       8096   90111   82016   40M 83 Linux**

/dev/mmcblk0p2      90112 7634943 7544832  3.6G 83 Linux



Command (m for help): t

Partition number (1,2, default 2): 1

Hex code (type L to list all codes): c



Changed type of partition 'Linux' to 'W95 FAT32 (LBA)'.



Command (m for help): p

Disk /dev/mmcblk0: 3.7 GiB, 3909091328 bytes, 7634944 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disklabel type: dos

Disk identifier: 0x1d437f06



Device         Boot Start     End Sectors  Size Id Type

**/dev/mmcblk0p1       8096   90111   82016   40M  c W95 FAT32 (LBA)**

/dev/mmcblk0p2      90112 7634943 7544832  3.6G 83 Linux

Note: I have changed the first partition to FAT32 from linux using t command to set the respective HEX code for that.

edited Nov 20 at 7:07

muru

134k19282482

answered Nov 20 at 7:04

Mathan Murugan

111

New contributor

When you want to change the partition type like linux to Fat,

In this case, you have use the t command to change the partition type,like below,

Device         Boot Start     End Sectors  Size Id Type

**/dev/mmcblk0p1       8096   90111   82016   40M 83 Linux**

/dev/mmcblk0p2      90112 7634943 7544832  3.6G 83 Linux



Command (m for help): t

Partition number (1,2, default 2): 1

Hex code (type L to list all codes): c



Changed type of partition 'Linux' to 'W95 FAT32 (LBA)'.



Command (m for help): p

Disk /dev/mmcblk0: 3.7 GiB, 3909091328 bytes, 7634944 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disklabel type: dos

Disk identifier: 0x1d437f06



Device         Boot Start     End Sectors  Size Id Type

**/dev/mmcblk0p1       8096   90111   82016   40M  c W95 FAT32 (LBA)**

/dev/mmcblk0p2      90112 7634943 7544832  3.6G 83 Linux

Note: I have changed the first partition to FAT32 from linux using t command to set the respective HEX code for that.

edited Nov 20 at 7:07

muru

134k19282482

answered Nov 20 at 7:04

Mathan Murugan

111

New contributor

edited Nov 20 at 7:07

muru

134k19282482

edited Nov 20 at 7:07

muru

134k19282482

edited Nov 20 at 7:07

muru

134k19282482

answered Nov 20 at 7:04

Mathan Murugan

111

New contributor

answered Nov 20 at 7:04

Mathan Murugan

111

answered Nov 20 at 7:04

Mathan Murugan

111

New contributor

Mathan Murugan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment |

up vote
0
down vote

What you specify with the t command of fdisk is the partition type. This is not related to the filesystem that is inside that partition.

The partition type is stored in the partition table and is a hint for the BIOS/EFI firmware or the OS of the content of the partition. I guess only Windows used to use it.

But this is not related of the filesystem you later create on that partition.

You could try to create an ext4 partition on a W95 FAT32 labeled partition and linux will be fine with it. This is not recommended but nothing forbids you to do so.

answered Nov 20 at 8:34

solsTiCe

5,17421845

add a comment |

up vote
0
down vote

What you specify with the t command of fdisk is the partition type. This is not related to the filesystem that is inside that partition.

The partition type is stored in the partition table and is a hint for the BIOS/EFI firmware or the OS of the content of the partition. I guess only Windows used to use it.

But this is not related of the filesystem you later create on that partition.

You could try to create an ext4 partition on a W95 FAT32 labeled partition and linux will be fine with it. This is not recommended but nothing forbids you to do so.

answered Nov 20 at 8:34

solsTiCe

5,17421845

add a comment |

up vote
0
down vote

What you specify with the t command of fdisk is the partition type. This is not related to the filesystem that is inside that partition.

The partition type is stored in the partition table and is a hint for the BIOS/EFI firmware or the OS of the content of the partition. I guess only Windows used to use it.

But this is not related of the filesystem you later create on that partition.

You could try to create an ext4 partition on a W95 FAT32 labeled partition and linux will be fine with it. This is not recommended but nothing forbids you to do so.

answered Nov 20 at 8:34

solsTiCe

5,17421845

What you specify with the t command of fdisk is the partition type. This is not related to the filesystem that is inside that partition.

The partition type is stored in the partition table and is a hint for the BIOS/EFI firmware or the OS of the content of the partition. I guess only Windows used to use it.

But this is not related of the filesystem you later create on that partition.

You could try to create an ext4 partition on a W95 FAT32 labeled partition and linux will be fine with it. This is not recommended but nothing forbids you to do so.

answered Nov 20 at 8:34

solsTiCe

5,17421845

answered Nov 20 at 8:34

solsTiCe

5,17421845

answered Nov 20 at 8:34

solsTiCe

5,17421845

answered Nov 20 at 8:34

solsTiCe

5,17421845

add a comment |

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