Play around with Linux partitions ~ Continued ~

Last time failed, so proceed in the following order.

** Work Goal ** ① Partitioning → Failure ~~ ② Mount ~~ ~~ ③ Capacity limit for each user ~~ ~~ ④ Authority setting ~~ ~~ ⑤ Symbolic link setting at mount point ~~

① Partitioning

This time, we will divide it into 3 basic plans + 2 logical partitions. Use the fdisk command to partition the partition until the following status is obtained, as in last time.

Command (m for help): p

Disk /dev/sda: 42.9 GB, 42949672960 bytes, 83886080 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
Disk label type: dos
Disk identifier: 0x0009ef88

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048    10487807     5242880   83  Linux
/dev/sda2        10487808    20973567     5242880   83  Linux
/dev/sda3        20973568    31459327     5242880   83  Linux
/dev/sda4        31459328    83886079    26213376    5  Extended
/dev/sda5        31461376    41947135     5242880   83  Linux
/dev/sda6        41949184    52434943     5242880   83  Linux

After creating and saving the partition, the following error message appears, so I checked it. → I got a lot of information that it will be reflected by restarting.

WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
The kernel still uses the old table. The new table will be used at
the next reboot or after you run partprobe(8) or kpartx(8)
Syncing disks.

After shutting down and vagrant up again, it broke ^^; I don't know the cause, so I put it on hold!

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