how to store a file in continuous disk block in linux

Question

I want store some data on the disk in linux. I want this data stored in continuous disk block in physical disk. If i in order write this data to a normal file, maybe the block that the file occupies is not continuous in physical disk. Is there any way to do this job?

Accepted Answer

Disk partitions are continuous regions of a disk.

So one way to do what you want to do is to resize your disk partitions and create a new one with gparted (gnome) or partitionmanager (kde) or similiar - of an appropriate size for your file.

You can then write directly to your new partition (not using and bypassing a filesystem) by using the file:

```
/dev/sdxn
```

Where sdxn = {sda1, sda2, ..., sdb1, ... ...} etc. is the letter/number of the partition.

Alternatively you can set aside an entire disk by writing directly to it (bypassing partition table alltogether) using the file:

```
/dev/sdx
```

Where sdx = {sda, sdb, sdc, ...} etc. is the letter of the disk.

Warning: Don't make a typo and write to the wrong one (that has a filesystem on it) or you will corrupt it. Best to make a symbolic link ln -s /dev/sdxn /home/fred/mydata, and then always write to mydata file.

how to store a file in continuous disk block in linux

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