RAMDISK(HW)

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RAMDISK(HW)

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ramdisk - ��-�� (��).

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�� ramdisk �� . ramdisk �� , �� mkfs(8). �� .

�� ramdisk �� . �� , �� .

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�� . �� ramdisk �� 2 � �� 16K. �� 4 ��, �� 16 �� , �� 16K � �� . �� 16K, 32K, 64K � �.�.

�� . �� , �� , �� . �� . �� (�� ), �� , �� .

�� , �� , ��, �� . �� , �� -�� .

�� 256 �� , �� ramdisk �� 16K (/dev/ram00). �� , �� (��) �� . �� .

� �� , �� :

��
��	��	�� (��. c��. ��.)				��			��
16K (#1) (��)	0	0	0	0	0	0	0	1	1
16K (#1) (��)	1	0	0	1	0	0	0	0	129
64K (#0) (��)	0	0	0	0	0	0	0	0	16
512K (#7) (��)	1	0	1	0	1	1	1	1	1

�� :

��	��
0 0 0 0	16K
0 0 0 1	32K
0 0 1 0	64K
0 0 1 1	128K
0 1 0 0	256K
0 1 0 1	512K
0 1 1 0	1M
0 1 1 1	2M
1 0 0 0	4M
1 0 0 1	8M
1 0 1 0	16M
1 0 1 1	32M
1 1 0 0	64M
1 1 0 1	128M
1 1 1 0	256M
1 1 1 1	512M

�� ramdisk �� :

��
�� , �� . �� :
```
   mknod device_name b_or_c major_device_number minor_device_number
```
�� b_or_c - "b" �� "c". "b" �� , �� . �� 31. �� . �� .
��:
```
    ���������� ���������� - 128, ��������� - 0.
```
��:
```
16K = 0    124K = 24  1M = 48   8M  = 72
32K = 8    256K = 32  2M = 56   16M = 80
64K = 16   512K = 40  4M = 64   32M = 88
```
�� : 0 - 7. ��: �� 8 ��. �� .
��, �� 64K �� 144 �� 151. �� 1, �� :
```
   mknod /dev/ram64 b 31 145
```
��
�� :
```
   mkfs device_name size_of_file_in_Bsize_blocks
```
� �� 64K �� :
```
   mkfs /dev/ram64 64
```
��
�� :
```
   mount device_name mount_point
```
�� 64-�� /mnt ��:
```
   mount /dev/ram64 /mnt
```

�� mkfs � mount. �� mkfs � �� . � �� , �� , �� .

�� mkfs �� 512K � �� :

  (  /etc/mkfs /dev/ram40 512
     /etc/mount /dev/ram40 /mnt
  ) < /dev/ram40

��
�� . �� , �� , �� . � �� . �� .

�� . �� , �� UNIX �� .

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 /dev/ram00

��. ��
mkfs(8), mount(8), mknod(1)

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Designed by Andrey Novikov
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