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- LABELDISK User Commands LABELDISK
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- NNAAMMEE
- labeldisk - read and write a disk's label
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- SSYYNNOOPPSSIISS
- llaabbeellddiisskk [--ffrroomm ffrroommDDeevviiccee] [--ww] [--qq] [--ssuunn] [--ddeecc] [--nneeww]
- _d_e_v_i_c_e
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- OOPPTTIIOONNSS
- --ffrroomm ffrroommDDeevviiccee
- Read the label from this device.
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- --ww Write a new label.
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- --qq Write a new label quickly, without prompting for parti-
- tion information.
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- --ssuunn Write out a Sun label. The default is to write what-
- ever type of label was read.
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- --ddeecc Write out a Dec label.
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- --nneeww Ignore any old label.
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- _d_e_v_i_c_e
- The device file with the disk label. Without --ffrroomm it
- is the device that the label is read from and written
- to, otherwise it is the device that is written to.
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- DDEESSCCRRIIPPTTIIOONN
- This reads the disk label and verifies its checksum. If the
- --ffrroomm ffrroommDDeevviiccee option is present then the disk label is
- read from the ffrroommDDeevviiccee, and the ddeevviiccee argument becomes
- the device to which the label is written to.
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- If the --ww option is present labeldisk interactively prompts
- for partition information. After this the user is presented
- with the new label and given the opportunity to commit the
- change or abort it. The user is also given the chance to
- write the label to all of the valid partitions found on the
- device. ``valid'' means that the partition has a positive
- number of cylinders associated with it, and that a file sys-
- tem exists on the partition. If a partition on the disk is
- not ``valid'', then it is skipped. An attempt is made to
- write the label to the raw disk in the improbable case that
- no valid partition starts on cylinder 0. If labeldisk was
- not able to write the label to the raw disk or to a parti-
- tion that begins at cylinder 0, then a warning is issued to
- that effect.
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- Sprite v.1.0 Printed: October 3, 1991 1
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- LABELDISK User Commands LABELDISK
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- The --qq option turns off the prompting for partition informa-
- tion only. This is useful for copying a label from one par-
- tition on one device to other partitions on the same or dif-
- ferent device if the user knows that the label on the from
- device has the correct information. Overrides the --ww
- option.
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- The --ddeecc option converts the label being written to a dec
- label.
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- The --ssuunn option converts the label being written to a dec
- label.
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- The --nneeww option ignores any label read, and creates a new
- one instead. If either the --ddeecc or the --ssuunn option is
- specified then the new label created is of the specified
- type.
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- Each disk is divided into 8 partitions, named ``ai'' thru
- ``gi''. Each partition is specified with a starting
- cylinder number and the number of cylinders it contains.
- Unused partitions are indicated with a zero size. Parti-
- tions can overlap, but overlapping partitions should never
- be used simultaneously! Traditionally partition ``ai'' is a
- small partition suitable for the root or a small /tmp. Par-
- tition ``bi'' is a slightly larger system suitable for a
- single machine's swap directory. Partition ``ci'' is a sin-
- gle large partition that specifies the whole disk. Parti-
- tions ``di'' and ``ei'' are often used as large partitions
- beyond ``ai'' and ``bi''. Partition ``gi'' is usually set
- up as all the space after ``ai'' and ``bi''. Partitions
- ``fi'' and ``hi'' usually aren't used, but they can be.
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- Partitions are useful to quarantine different sets of users
- from one another, although they are a pain to change once a
- filesystem has been created on them. Changing them requires
- recreating any affected filesystems.
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- KKEEYYWWOORRDDSS
- disk, label
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- Sprite v.1.0 Printed: October 3, 1991 2
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