用parted調整分區大小
Select the hard disk to be parted
When you execute parted command without any argument, by default it selects the first hard disk drive that is available on your system.
In the following example, it picked /dev/sda automatically as it is the first hard drive in this system.
# parted
GNU Parted 2.3
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted)
To choose a different hard disk, use the select command as shown below.
(parted) select /dev/sdb
It will throw the following error message when it doesn’t find the given hard disk name.
Error: Error opening /dev/sdb: No medium found
Retry/Cancel? y
Display all Partitions Using print
Using the print command, you can view all the available partitions in the selected hard disk. The print command also displays hard disk properties such as model, size, sector size and partition table as shown below.
(parted) print
Model: ATA WDC WD5000BPVT-7 (scsi)
Disk /dev/sda: 500GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos
Number Start End Size Type File system Flags
1 1049kB 106MB 105MB primary fat16 diag
2 106MB 15.8GB 15.7GB primary ntfs boot
3 15.8GB 266GB 251GB primary ntfs
4 266GB 500GB 234GB extended
5 266GB 269GB 2682MB logical ext4
7 269GB 270GB 524MB logical ext4
8 270GB 366GB 96.8GB logical lvm
6 366GB 370GB 3999MB logical linux-swap(v1)
9 370GB 500GB 130GB logical ext4
Resize Partition from One Size to Another Using resize
Using resize parted command, you can increase or decrease the partition size of a partition as shown in the example below.
(parted) resize 9
WARNING: you are attempting to use parted to operate on (resize) a file system.
parted's file system manipulation code is not as robust as what you'll find in
dedicated, file-system-specific packages like e2fsprogs. We recommend
you use parted only to manipulate partition tables, whenever possible.
Support for performing most operations on most types of file systems
will be removed in an upcoming release.
Start? [373GB]? 373GB
End? [500GB]? 450GB
As shown above, parted command will always warn whenever you are attempting to do something dangerous (i.e : rm, resize, mkfs).
The size of partition 9 is actually reduced from 127GB to 77GB. Verify that the partition is resized properly using the print command as shown below.
(parted) print
Model: ATA WDC WD5000BPVT-7 (scsi)
Disk /dev/sda: 500GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos
Number Start End Size Type File system Flags
1 1049kB 106MB 105MB primary fat16 diag
2 106MB 15.8GB 15.7GB primary ntfs boot
3 15.8GB 266GB 251GB primary ntfs
4 266GB 500GB 234GB extended
5 266GB 316GB 50.0GB logical ext4
6 316GB 324GB 7999MB logical linux-swap(v1)
7 324GB 344GB 20.0GB logical ext4
8 344GB 364GB 20.0GB logical
9 373GB 450GB 77.3GB logical fat32 lba
Parted allows you to type unambiguous abbreviation for commands like “p” for print, “sel” for select,etc.
