Internal Bootflash; External Compactflash (Slot0); Formatting Flash Devices And File Systems; Initializing Internal Bootflash - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Chapter 2 Before You Begin
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m

Internal bootflash

All switches in the Cisco MDS 9000 Family have one internal bootflash: that resides in the supervisor
or switching module.You have access to two locations within the internal bootflash: file system.
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External CompactFlash (Slot0)

Cisco MDS 9500 Series directors contain an additional external CompactFlash referred to as the slot0:
file system.
The external CompactFlash, an optional device for MDS 9500 Series directors, can be used for storing
software images, logs, and core dumps.

Formatting Flash Devices and File Systems

By formatting a flash device or a file system, you are clearing out the contents of the device or the file
system and restoring it to its factory-shipped state.
See the
page

Initializing Internal bootflash

When a switch is shipped, the init system command is already performed and you do not need to issue
it again. Initializing the switch resets the entire internal flash device and erases all data in the bootflash:
file system. The internal flash device is composed of several file systems with bootflash: being one of
them. All files in bootflash: are erased and you must download the system and kickstart images again.
After issuing an init system command, you do not have to format the bootflash: again because bootflash:
is automatically formatted.
The init system command also installs a new loader from the existing (running) kickstart image. You
Note
can access this command from the
If your system has an active supervisor module currently running, you must issue the system standby
Caution
manual-boot command in EXEC mode on the active supervisor module before issuing the init system
command on the standby supervisor module to avoid corrupting the internal bootflash:. After the init
system command completes on the standby supervisor module, issue the system no standby
manual-boot command in EXEC mode on the active supervisor module.
If bootflash: is found corrupted during a boot sequence, you will see the following message:
ERROR:bootflash: has unrecoverable error; please do "format bootflash:"
OL-18084-01, Cisco MDS NX-OS Release 4.x
The volatile: file system provides temporary storage, and it is also the default location for file system
commands. Files in temporary storage (volatile:) are erased when the switch reboots.
The bootflash: (nonvolatile storage) file system provides permanent storage. The files in bootflash:
are preserved through reboots and power outages.
"About Flash Devices" section on page 2-24
2-26.
and the
prompt (see
switch(boot)#
Cisco MDS 9000 Family CLI Configuration Guide
Formatting Flash Devices and File Systems
"Using Switch File Systems" section on
Chapter 8, "Software Images").
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