Starting from v6rc5 it is possible to partition NAND flash, allowing to install own OS on each partition and specify primary and fallback partitions.
If a partition should fail for some reason (failed upgrade, problematic configuration introduced, software problem), the next partition will boot instead. This can be used as an interactive backup where you keep a verified working installation, and upgrade only some secondary partition. If you upgrade your configuration, and it prooves to be good, you can use the "save config" button to copy it over to other partititions.
Minimum partition sizes:
- 32MB on MIPS
- 40MB on PowerPC
- 48MB on CCR
Maximum number of allowed partitions is 8.
[admin@bumba] /partitions> print Flags: A - active, R - running # NAME FALLBACK-TO VERSION SIZE 0 AR part0 next RouterOS v6.0rc5 64Mi
|repartition (integer)||Will reboot the router and reformat the NAND, leaving only active partition.|
|copy-to (<partition>)||Clone running OS with config to specified partition. Previously stored data on partition will be erased.|
|save-config-to (<partition>)||Clone running config on specified partition. Everything else is untouched.|
|restore-config-from (<partition>)||Copy config from specified partition to running partition|
|name (string; Default: )||Name of the partition|
|fallback-to (etherboot | next | <partition-name>; Default: next)||What to do if active partition fails to boot:
|active (yes | no)||Partition is active|
|running (yes | no)||Currently running partition|
|size (integer[MiB])||Partition size|
|version (string)||Current RouterOS version installed on the partition|