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105 lines
4.8 KiB
ReStructuredText
105 lines
4.8 KiB
ReStructuredText
.. include:: /include.rst
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|hard_disk| Hard disks
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======================
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The **Hard disks** page contains settings related to the emulated machine's fixed disks.
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Hard disk list
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--------------
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All hard disks attached to the emulated machine are listed, with the following information:
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* **Bus:** storage bus the disk is attached to, as well as the disk's bus channel or ID. These can be changed through the *Bus* and *Channel*/*ID* boxes below the list.
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* **File:** path to the disk image file.
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* **C/H/S:** disk size in cylinders, heads and sectors, respectively.
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* **MB:** disk size in megabytes.
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* **Model:** :ref:`emulated model profile <settings/hdd:Model>` for the disk.
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Model
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-----
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The *Model* box below the hard disk list determines the **disk model** to emulate. Model profiles adjust the disk's identification data, as well as its performance according to rotation speed, physical layout and cache size. Generic profiles adjust performance to match an average period-correct disk, while the **RAM Disk** profile runs the disk as fast as the host can manage.
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Adding a new disk
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-----------------
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The *New...* button opens a new window allowing you to create an existing hard disk image file.
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* **File name:** where to save the disk image file. See :ref:`hardware/diskimages:Hard disk images` for a list of supported image formats.
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* **Cylinders/Heads/Sectors:** CHS parameters for the disk image. These boxes control the *Size (MB)* box below.
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* **Size (MB):** the disk image's size in MB. This box controls the *Cylinders*, *Heads* and *Sectors* boxes above. There are limits to how big a hard disk image can be; see :ref:`hardware/diskimages:Hard disk size limits` for more information.
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* **Bus:** storage bus to attach the disk to.
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* **Channel**/**ID:** where to attach the disk on the selected storage bus. Channels/IDs that are already in use cannot be selected.
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* On IDE disks, the first number corresponds to the IDE channel, and the second number corresponds to the Master/Slave position:
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+-----+----------+------+
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|Value|Channel |Device|
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+=====+==========+======+
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|0:0 |Primary |Master|
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+-----+----------+------+
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|0:1 |Primary |Slave |
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+-----+----------+------+
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|1:0 |Secondary |Master|
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+-----+----------+------+
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|1:1 |Secondary |Slave |
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+-----+----------+------+
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|2:0 |Tertiary |Master|
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+-----+----------+------+
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|2:1 |Tertiary |Slave |
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+-----+----------+------+
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|3:0 |Quaternary|Master|
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+-----+----------+------+
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|3:1 |Quaternary|Slave |
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+-----+----------+------+
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* On SCSI disks, the first number corresponds to the controller's index, starting from 0 and following the order of: on-board SCSI controllers if present, then :ref:`sound cards <settings/sound:Sound card #1-#4>` with SCSI if present, then :ref:`configured SCSI controllers <settings/storage:SCSI>`; the second number is the SCSI ID within that controller:
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+-----+------------+-------+
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|Value|Controller |SCSI ID|
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+=====+============+=======+
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|0:00 |Controller 1|0 |
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+-----+ +-------+
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||vel|| ||vel| |
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+-----+ +-------+
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|0:15 | |15 |
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+-----+------------+-------+
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|1:00 |Controller 2|0 |
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+-----+ +-------+
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||vel|| ||vel| |
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+-----+ +-------+
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|1:15 | |15 |
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+-----+------------+-------+
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|2:00 |Controller 3|0 |
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+-----+ +-------+
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||vel|| ||vel| |
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+-----+ +-------+
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|2:15 | |15 |
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+-----+------------+-------+
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|3:00 |Controller 4|0 |
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+-----+ +-------+
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||vel|| ||vel| |
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+-----+ +-------+
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|3:15 | |15 |
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+-----+------------+-------+
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* On MFM/RLL, XTA and ESDI disks, the second number is 0 for the first drive on the controller, and 1 for the second drive.
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.. note:: If the disk is attached to a channel or controller that doesn't exist, such as the tertiary IDE channel with no tertiary IDE controller present, it will be effectively disabled.
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Press the *OK* button to create the disk image file, or *Cancel* to close the window without adding the disk.
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Adding an existing disk
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-----------------------
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The *Existing...* button opens a similar window to the *New...* button, except that it lets you select an existing disk image file. The CHS parameters are guessed from the image's file size, or the file header if the image is of a format which contains a header.
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After selecting the image file and checking if the parameters are correct, select the *Bus* and *Channel*/*ID* for the hard disk and press *OK* to add it. Press *Cancel* to close the window without adding the disk.
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Removing a disk
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---------------
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Select a disk on the list and press *Remove* to remove it.
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