Difference between revisions of "UltraBay II Floppy Drive"

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=== UltraBay II Floppy drive ===
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=== UltraBay II Floppy Drive (12J0425) ===
This is the 3.5" floppy drive for the UltraBay II slot.
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This is a floppy disk drive that slides into an UltraBay II.
 
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The drive allows to be to be connected to a proprietary external FDD connector port, freeing the UltraBay for use of another device at the same time. This requires a special cable (similar interface to a 760ED external floppy? The floppy end connector is the same as the ThinkPad end connector on a 760ED).
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=== Features ===
 
=== Features ===
* 3.5" 1.44 MB
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* Read/Write capabilities:
* additional connector for external attachment
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** 3.5-inch 1.44MB High Density
 
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** 3.5-inch 1.25MB Japanese Density
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** 3.5-inch 720KB Double Density
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* Activity LED
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* [[Floppy Connector#21_mm_drive|Floppy Connector port (21 mm)]]{{footnote|1}}
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{{footnotes|
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#This requires a cable (12J0432) to be able to be used externally.
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}}
 
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=== Part numbers ===
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==== TEAC FD-05U ====
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* 83H6258
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==== Sony MPF72U-1 ====
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* 20L1930
  
=== IBM Partnumbers ===
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=== Linux support ===
*Marketing PN: 12J0425
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In the case that you have two FDDs, or want to attach the FDD externally after the booting process; be aware that the floppy drivers' hardware auto-detection cannot be relied upon. However, you can force the floppy driver to use both of them by adding the following line to {{path|/etc/modprobe.conf}}:
*Cable PN: 12J0432
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=== Linux Support ===
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In case you have two floppy drives, or want to attach the floppy drive externally after boot, the floppy drivers hardware autodetection cannot be relied upon.<br />
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You can force the floppy driver to use both of them by adding the following line to {{path|/etc/modprobe.conf}}:
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  options floppy floppy=1,4,cmos
 
  options floppy floppy=1,4,cmos
This gives you support for either external floppy or ultrabay floppy or both if you plug them in after boot time.
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This will give you support for either external FDD, or UltraBay II FDD, or both if you plug them in after the booting process.
 
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If at boot there is a floppy drive attached to the external port, this is fd0 and the ultrabay is fd1.  Otherwise (no floppies attached at boot/floppy in ultrabay at boot), then ultrabay is fd0 and external port is fd1.  An ACPI-aware floppy driver would have the ablility to stop the devices swapping around, but such a thing doesn't exist.
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=== Also known (in IBM literature) as.... ===
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=== Supported with ===
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If there is a FDD attached to the external port during the boot process, it will be identified as {{path|/dev/fd0}} and the FDD in the UltraBay II will be identified as {{path|/dev/fd1}}. Otherwise (assuming no FDDs are externally attached during boot or FDD in UltraBay II during boot), the UltraBay II FDD would be assigned as {{path|/dev/fd0}} and external port would be assigned as {{path|/dev/fd1}}. An ACPI-aware floppy driver would have the ability to stop the devices from swapping around, but such a thing doesn't exist yet.
*ThinkPad {{770}}, {{770E}}, {{770ED}}, {{770X}}, {{770Z}}
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*[[SelectaDock III]]
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== Models supporting this accessory ==
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* {{770}}, {{770E}}, {{770ED}}, {{770X}}, {{770Z}}
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* {{SelectaDock III}}
  
[[Category:Components]]
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[[Category:Ultrabay Devices]]

Latest revision as of 16:34, 12 October 2020

UltraBay II Floppy Drive (12J0425)

This is a floppy disk drive that slides into an UltraBay II.

Features

  • Read/Write capabilities:
    • 3.5-inch 1.44MB High Density
    • 3.5-inch 1.25MB Japanese Density
    • 3.5-inch 720KB Double Density
  • Activity LED
  • Floppy Connector port (21 mm)1

FOOTNOTES [Δ]
  1. This requires a cable (12J0432) to be able to be used externally.

Part numbers

TEAC FD-05U

  • 83H6258

Sony MPF72U-1

  • 20L1930

Linux support

In the case that you have two FDDs, or want to attach the FDD externally after the booting process; be aware that the floppy drivers' hardware auto-detection cannot be relied upon. However, you can force the floppy driver to use both of them by adding the following line to /etc/modprobe.conf:

options floppy floppy=1,4,cmos

This will give you support for either external FDD, or UltraBay II FDD, or both if you plug them in after the booting process.

If there is a FDD attached to the external port during the boot process, it will be identified as /dev/fd0 and the FDD in the UltraBay II will be identified as /dev/fd1. Otherwise (assuming no FDDs are externally attached during boot or FDD in UltraBay II during boot), the UltraBay II FDD would be assigned as /dev/fd0 and external port would be assigned as /dev/fd1. An ACPI-aware floppy driver would have the ability to stop the devices from swapping around, but such a thing doesn't exist yet.

Models supporting this accessory