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@ -1077,9 +1077,12 @@ to display, assign, reassign, or remove the drive letter assignments. |
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| `ASSIGN /?` |
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| `ASSIGN /L` |
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| `ASSIGN ` *`<drv>`*`=` |
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| `ASSIGN ` |
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| `ASSIGN [`*`<drv>`*`],...` |
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| `ASSIGN `*`<drv>`*`=[`*`<device>`*`:[`*`<slice>`*`]],...` |
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| `ASSIGN `*`<tgtdrv>`*`=`*`<srcdrv>`*`,...` |
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| `ASSIGN ` *`<drv>`*`=[`*`<device>`*`:[`*`<slice>`*`]],...` |
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| `ASSIGN ` *`<tgtdrv>`*`=`*`<srcdrv>`*`,...` |
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| `ASSIGN /B='*'<option>'*'['*'<option>'*'['*'<option>'*'...]]` |
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#### Usage |
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@ -1090,23 +1093,36 @@ used in drive assignments in the running system. The devices listed |
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may or may not contain media. Although some device types support the |
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use of slices, the list does not indicate this. |
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`ASSIGN A:` just specifying the drive letter will display the |
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assignment for the drive letter |
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`ASSIGN` with no parameters will list all of the current drive |
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assignments. |
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`ASSIGN `*`<drv>`* will display the assignment for the specific drive |
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#### Usage (Specific) |
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The following describes how to assign drive specifically by identifing each |
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drive by its unique device and slice id's |
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`ASSIGN ` *`<drv>`* will display the assignment for the specific drive |
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For example, `ASSIGN C:` will display the assignment for drive C:. |
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`ASSIGN `*`<drv>`*`=`*`<device>`*`[:`*`<slice>`*`]` will assign (or |
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`ASSIGN ` *`<drv>`*`=`*`<device>`*`[:`*`<slice>`*`]` will assign (or |
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reassign) a drive letter to a new device and (optionally) slice. If no |
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slice is specified, then slice 0 is assumed. For example, `ASSIGN |
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C:=IDE0` will assign drive letter C: to device IDE0, slice 0. `ASSIGN |
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D:=IDE0:3` will assign drive letter D: to device IDE0 slice 3. |
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`ASSIGN `*`<drv>`*`=` can be used to remove the assignment from a |
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The `ASSIGN` command will not allow you to specify a slice (other than |
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zero) for devices that do not support slices. |
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A slice should only be specified for hard disk devices (SD, IDE, PPIDE). |
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Floppy disk drives and RAM/ROM drives do not have slices. |
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`ASSIGN ` *`<drv>`*`=` can be used to remove the assignment from a |
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drive letter. So, `ASSIGN E:=` will remove the association of drive |
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letter E: from any previous device. |
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`ASSIGN `*`<tgtdrv>`*`=`*`<srcdrv>`* is used to swap the assignments |
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`ASSIGN ` *`<tgtdrv>`*`=`*`<srcdrv>`* is used to swap the assignments |
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of two drive letters. For example, `ASSIGN C:=D:` will swap the device |
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assignments of C: and D:. |
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@ -1118,6 +1134,78 @@ When the command runs it will echo the resultant assignments to the |
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console to confirm its actions. It will also display the remaining |
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space available in disk buffers. |
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#### Usage (Bulk) |
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The following describes how to assign drives in bulk without having to specify |
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the identifiers of each drive being mapped. Instead bulk mode has a |
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predefined set options (identified by single letter) which will map drives. |
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Bulk mode works by assigning drives sequentially starting at A: until all |
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drives are used, or there are no more options to process. Each option |
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will typically map between 0 and N drives depending on the option |
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and the available hardware in your system. |
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`ASSIGN /B=`*`<option><option>`*... will perform bulk assignment . |
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The following options will assign a small number of devices, typically you would |
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place at beginning of an option list. |
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| Option | Name | Description | Assigned | |
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|--------|----------|---------------------------------------------|----------| |
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| B | Boot | The boot device | 1 | |
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| A | RAM | Ram drive | 0,1 | |
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| O | ROM | Rom drive | 0,1 | |
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| F | Floppy | All floppy devices, with/without media | 0,1,2,.. | |
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| P | Preserve | Skip and preserve the next drive assignment | 1 | |
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| X | Exclude | Un-assign / Exclude the next drive | 1 | |
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A drive e.g. RAM, ROM, FLOPPY can only be assigned if it exists. if you system |
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doesn't have the hardware that supports the device, then no devices will be |
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assigned, and the next option will be processed. |
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`B` assigns the boot device. If used the `B`oot drive should typically be |
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assigned first. |
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`P` will not make any changes to the next drive, it will skip over it. While the |
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`X` option will un-assign the next drive, leaving a gap. |
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The remaining options will fill drives mostly to end, from hard drive slices, |
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generally choose 1 of the following: |
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| Option | Name | Description | Assigned | |
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|--------|-------------|---------------------------------------------|----------| |
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| S | Slices | Assign slices from boot hard drive | ...max | |
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| H | Hard Drive | Assign slices evenly from all hard drives | ...max | |
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| L | Legacy HD | Assign slices from all hard drives (legacy) | 6,...max | |
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| Z | Exclude All | Un-assign all remaining drives | ...max | |
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`S`lices assignment will map all remaining drives to slices from the boot device. |
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If I have other hard drives present these will not be mapped by this option. |
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e.g. `ASSIGN /B=BAOS` |
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Will first assign drives `A:(Boot), B:(RAM), C:(ROM)` this leaves 13 drives |
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which will be assigned to slices from the boot hard drive (D: thru P:), |
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leaving no unused drives. |
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'H'ard drive assignment will attempt to fill all remaining drive letters |
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by splitting the number of drives remaining evenly across all. |
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e.g. `ASSIGN /B=BAOH` |
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Will first assign drives `A:(Boot), B:(RAM), C:(ROM)` this leaves 13 drives |
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available. If I have 3 hard disks then (13/3) = 4 slices from each hard drive will |
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be assigned to drives (D: thru O:), leaving a single unused drive (P:). |
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`L`egacy hard drive assignment is identical to how the startup hard disk assignment |
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works. ie. Attempt to assign up to 8 hard drives split across hard drives |
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detected at boot. |
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e.g. `ASSIGN /B=BAOL` |
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Will first assign drives `A:(Boot), B:(RAM), C:(ROM)`. If I have 3 hard disks |
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then (8/3) = 2 slices from each hard drive will be assigned to drives (D: thru I:), |
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leaving 7 unused drives (J: thru P:). |
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#### Notes |
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If the `ASSIGN` command encounters any rule violations or errors, it |
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@ -1136,10 +1224,6 @@ being assigned actually contains readable media. If the assigned |
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device has no media, you will receive an I/O error when you attempt to |
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use the drive letter. |
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The `ASSIGN` command will not allow you to specify a slice (other than |
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zero) for devices that do not support slices (such as floppy drives |
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or RAM/ROM disks). |
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The `ASSIGN` command does not check that the media is large enough to |
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support the slice you specify. In other words, you could potentially |
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assign a drive letter to a slice that is beyond the end of the media |
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@ -1154,6 +1238,10 @@ You will not be allowed to assign multiple drive letters to a single |
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device and slice. In other words, only one drive letter may refer to a |
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single filesystem at a time. |
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Attempts to assign a duplicate drive letter will fail and display an |
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error. If you wish to assign a different drive letter to a |
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device/unit/slice, unassign the existing drive letter first. |
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Drive letter A: must always be assigned to a device and slice. The |
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`ASSIGN` command will enforce this. |
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@ -1163,14 +1251,6 @@ all drive letters will return to their default assignments. A SUBMIT |
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batch file can be used to setup desired drive assignments |
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automatically at boot. |
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Floppy disk drives and RAM/ROM drives do not have slices. A slice |
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should only be specified for hard disk devices (SD, IDE, PPIDE). |
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Only one drive letter may be assigned to a specific device/unit/slice |
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at a time. Attempts to assign a duplicate drive letter will fail and |
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display an error. If you wish to assign a different drive letter to a |
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device/unit/slice, unassign the existing drive letter first. |
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Be aware that this command will allow you to reassign or remove the |
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assignment of your system drive letter. This can cause your operating |
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system to fail and force you to reboot. |
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Mark Pruden
1 year ago