64G tf 卡上，使用 fdisk 和 resize2fs 扩展 root 分区到 54G
root@Debian-StarFive:~# fdisk -l
Disk /dev/mmcblk0: 58.24 GiB, 62534975488 bytes, 122138624 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: 0xc2d63c59
Device Boot Start End Sectors Size Id Type
/dev/mmcblk0p2 18432 51199 32768 16M c W95 FAT32 (LBA)
/dev/mmcblk0p3 * 51200 1099775 1048576 512M 83 Linux
/dev/mmcblk0p4 1099776 14680063 13580288 6.5G 83 Linux
root@Debian-StarFive:~# fdisk /dev/mmcblk0
Welcome to fdisk (util-linux 2.38).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
This disk is currently in use - repartitioning is probably a bad idea.
It's recommended to umount all file systems, and swapoff all swap
partitions on this disk.
Command (m for help): p
Disk /dev/mmcblk0: 58.24 GiB, 62534975488 bytes, 122138624 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: 0xc2d63c59
Device Boot Start End Sectors Size Id Type
/dev/mmcblk0p2 18432 51199 32768 16M c W95 FAT32 (LBA)
/dev/mmcblk0p3 * 51200 1099775 1048576 512M 83 Linux
/dev/mmcblk0p4 1099776 14680063 13580288 6.5G 83 Linux
Command (m for help): d
Partition number (2-4, default 4): 4
Partition 4 has been deleted.
Command (m for help): p
Disk /dev/mmcblk0: 58.24 GiB, 62534975488 bytes, 122138624 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: 0xc2d63c59
Device Boot Start End Sectors Size Id Type
/dev/mmcblk0p2 18432 51199 32768 16M c W95 FAT32 (LBA)
/dev/mmcblk0p3 * 51200 1099775 1048576 512M 83 Linux
Command (m for help): n
Partition type
p primary (2 primary, 0 extended, 2 free)
e extended (container for logical partitions)
Select (default p): p
Partition number (1,4, default 1): 4
First sector (2048-122138623, default 2048): 1099776
Last sector, +/-sectors or +/-size{K,M,G,T,P} (1099776-122138623, default 122138623): 122138623
Created a new partition 4 of type 'Linux' and of size 57.7 GiB.
Partition #4 contains a ext4 signature.
Do you want to remove the signature? [Y]es/[N]o: N
Command (m for help): p
Disk /dev/mmcblk0: 58.24 GiB, 62534975488 bytes, 122138624 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: 0xc2d63c59
Device Boot Start End Sectors Size Id Type
/dev/mmcblk0p2 18432 51199 32768 16M c W95 FAT32 (LBA)
/dev/mmcblk0p3 * 51200 1099775 1048576 512M 83 Linux
/dev/mmcblk0p4 1099776 122138623 121038848 57.7G 83 Linux
Command (m for help): w
The partition table has been altered.
Syncing disks.
root@Debian-StarFive:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 3.5G 0 3.5G 0% /dev
tmpfs 718M 908K 718M 1% /run
/dev/mmcblk0p4 6.3G 1.2G 4.9G 19% /
tmpfs 3.6G 0 3.6G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
/dev/mmcblk0p3 488M 39M 413M 9% /boot
/dev/mmcblk0p2 16M 4.5M 12M 29% /boot/efi
tmpfs 718M 0 718M 0% /run/user/0
root@Debian-StarFive:~# resize2fs /dev/mmcblk0p4
resize2fs 1.46.5 (30-Dec-2021)
Filesystem at /dev/mmcblk0p4 is mounted on /; on-line resizing required
old_desc_blocks = 1, new_desc_blocks = 8
The filesystem on /dev/mmcblk0p4 is now 15129856 (4k) blocks long.
root@Debian-StarFive:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 3.5G 0 3.5G 0% /dev
tmpfs 718M 908K 718M 1% /run
/dev/mmcblk0p4 57G 1.2G 54G 3% /
tmpfs 3.6G 0 3.6G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
/dev/mmcblk0p3 488M 39M 413M 9% /boot
/dev/mmcblk0p2 16M 4.5M 12M 29% /boot/efi
tmpfs 718M 0 718M 0% /run/user/0