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132 Managing partitions using GDisk
Reinitializing the Master Boot Record
Reinitializing the Master Boot Record
Use the /mbr switch to rewrite the boot code in the Master Boot Record (MBR).
You may need to reinitialize the MBR to eliminate a boot sector virus residing
there. You can also use the /mbr switch with the /wipe option to delete a dynamic
disk.
This switch functions with GDisk only.
Note: The switch must be used when you delete Linux partitions if LILO resides
in the MBR.
/for Formats the new partition once it has been created. Unless the
/ntfat16 or /-32 switches are used, the partition type is determined
by the following:
■ If the partition is less than 16MB: FAT12
■ If the partition is between 16MB and 512MB: FAT16
■ If the partition is greater than 512MB: FAT32
/q Performs a quick format if used in combination with the /for
switch. If you do not use this switch, then GDisk performs a surface
scan of the partition and marks any bad sectors.
/v[:label] Gives the new formatted partition the specified label when used in
combination with the /for switch.
/-32 Indicates that the partition is not formatted as FAT32. Limits
primary and logical partitions to 2048 MB. Partitions over 16 MB
are formatted as FAT16. This switch is useful if the operating system
does not support FAT32, such as Windows NT 4.
/ntfat16 Lets you create a FAT16 primary or logical partition, up to 4097
MB. The cluster size is 64 KB. Partitions over 16 MB are formatted
as FAT16. Windows 9x and DOS systems may be unable to access
partitions that are created with this switch and are over 2048 MB.
Table 10-3 Create switches
Switch Explanation