One utility, which supports reading the "Class A" file-system, is ciscoflash(http://freecode.com/projects/ciscoflash) by Simon Lockhart:
T42 ~ # ciscoflash -d /dev/sdb dir -#- --type-- --crc--- -seek-- -length- -----date/time------ name 1 00000002 E81CCB85 09831C 426652 Jun 17 2013 03:56:03 cat4500-ios-promupgrade-122_31r_SGA7 T42 ~ # ciscoflash -d /dev/sdb extract T42 ~ # ls -l cat4500-ios-promupgrade-122_31r_SGA7 -rw-r--r-- 1 root root 426652 2013-06-17 17:13 cat4500-ios-promupgrade-122_31r_SGA7 T42 ~ # However, it does not support writing to "Class A" file-systems. regards, Martin 2013/6/17, Martin T <[email protected]>: > Hi, > > older Cisco 4500 series supervisor engines support compact flash > cards. However, Cisco-branded 32MB compact-flash taken from Cisco 1800 > series router is not recognized by SUP: > > Catalyst4500#dir slot0: > %Error opening slot0:/ (Bad device info block) > Catalyst4500# > > After executing "format slot0:", the compact flash became accessible: > > Catalyst4500#format slot0: > Format operation may take a while. Continue? [confirm] > Format operation will destroy all data in "slot0:". Continue? [confirm] > Enter volume ID (up to 64 chars)[default slot0]: > > Format of slot0 complete > Catalyst4500#dir slot0: > Directory of slot0:/ > > No files in directory > > 31784960 bytes total (31784960 bytes free) > Catalyst4500# > > > The problem is, that now I'm not able to access this compact-flash in > my PC. Looks like it even does not have a partition-table: > > T42 ~ # dmesg | tail > [1983944.880491] ata5.00: 62720 sectors, multi 0: LBA > [1983944.888476] ata5.00: configured for PIO0 > [1983944.888794] scsi 4:0:0:0: Direct-Access ATA STI Flash > 8.0.0 01/1 PQ: 0 ANSI: 5 > [1983944.889398] sd 4:0:0:0: Attached scsi generic sg2 type 0 > [1983944.891205] sd 4:0:0:0: [sdb] 62720 512-byte logical blocks: > (32.1 MB/30.6 MiB) > [1983944.891403] sd 4:0:0:0: [sdb] Write Protect is off > [1983944.891414] sd 4:0:0:0: [sdb] Mode Sense: 00 3a 00 00 > [1983944.891501] sd 4:0:0:0: [sdb] Write cache: enabled, read cache: > enabled, doesn't support DPO or FUA > [1983944.910031] sdb: unknown partition table > [1983944.910632] sd 4:0:0:0: [sdb] Attached SCSI removable disk > T42 ~ # fdisk -lu /dev/sdb > > Disk /dev/sdb: 32 MB, 32112640 bytes > 255 heads, 63 sectors/track, 3 cylinders, total 62720 sectors > Units = sectors of 1 * 512 = 512 bytes > Sector size (logical/physical): 512 bytes / 512 bytes > I/O size (minimum/optimal): 512 bytes / 512 bytes > Disk identifier: 0x00000000 > > Disk /dev/sdb doesn't contain a valid partition table > T42 ~ # file -s /dev/sdb > /dev/sdb: data > T42 ~ # dd if=/dev/sdb bs=512 count=1 | hexdump -C > 00000000 88 06 35 76 ea 01 00 00 01 00 00 00 00 00 04 00 > |..5v............| > 00000010 ff ff ff ff 01 00 06 00 03 00 00 00 e5 01 00 00 > |................| > 00000020 00 00 00 01 02 00 7c 60 00 00 00 00 02 00 c2 ff > |......|`........| > 00000030 00 00 3e 00 e8 01 00 00 01 00 00 00 e9 01 00 00 > |..>.............| > 00000040 01 00 00 00 6c 73 74 6f 00 30 00 00 00 00 00 00 > |....lsto.0......| > 00000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > |................| > * > 000000a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 > |................| > 000000b0 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > |................| > * > 00000100 d0 ba 1e 0b 02 00 f8 5f b8 80 ff ff ff ff ff ff > |......._........| > 00000110 6f 79 61 64 66 2d 6c 73 62 69 6d 2d 00 00 00 00 > |oyadf-lsbim-....| > 00000120 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > |................| > * > 00000140 45 7f 46 4c 02 01 00 01 00 00 00 00 00 00 00 00 > |E.FL............| > 00000150 02 00 70 00 00 00 01 00 00 01 00 00 00 00 34 00 > |..p...........4.| > 00000160 02 00 68 5e 00 00 00 00 34 00 20 00 01 00 28 00 |..h^....4. > ...(.| > 00000170 0a 00 09 00 00 00 01 00 01 00 00 00 00 01 00 00 > |................| > 00000180 00 01 00 00 01 00 b4 57 29 00 a4 c2 00 00 07 00 > |.......W).......| > 00000190 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > |................| > 000001a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > |................| > * > 1+0 records in > 1+0 records out > 512 bytes (512 B) copied, 0.0158727 s, 32.3 kB/s > 00000200 > T42 ~ # > > > "format" command creates a "Class A" file-system? Is this "Class A" > file-system some kind of Cisco-proprietary file-system? is there a way > to access this file-system under modern(2.6/3.x) Linux kernel? > > > regards, > Martin > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
