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Subject says it. I would like to find out if I have anything written on the MBR of a disk in my system /dev/sda, or any other device. If there is something there, is it readable, or recognizable to humans? thanks, -chuck

...speed it up but no joy. Any Ideas what I've done wrong? parted output [root at nas ~]# parted -l Model: ATA ST31000528AS (scsi) Disk /dev/sda: 1000GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 525MB 524MB primary ext4 boot 2 525MB 1000GB 1000GB primary lvm Model: ATA ST2000DM001-1E61 (scsi) Disk /dev/sdb: 2000GB Sector size (logical/physical): 512B/4096B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 20...

...r0 has been opened read-only. When I take a look at things using parted I see this: # parted -l print Model: ATA WDC WD5000AAKS-0 (scsi) Disk /dev/sda: 500GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 525MB 524MB primary ext4 boot 2 525MB 500GB 500GB primary lvm Model: Linux device-mapper (linear) (dm) Disk /dev/mapper/vg_inet02-lv_guest01: 129GB Sector size (logical/physical): 512B/512B Partition Table: loop Number Start End Size File system Flags 1...

...aster partiion table for the device. you can display the latter like... $ sudo parted /dev/sda print Model: ATA Crucial_CT512M55 (scsi) Disk /dev/sda: 512GB Sector size (logical/physical): 512B/4096B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 525MB 524MB primary ext4 boot 2 525MB 512GB 512GB primary lvm note tho, that if "Partition Table" instead says gpt, then the disk is formatted GPT and doesn't use the MBR. $ sudo parted /dev/sdb print Model: ATA ST32000644NS (scsi) Disk /dev/sdb: 2000...

...le system Flags 1 0.00B 18.8GB 18.8GB xfs Model: Virtio Block Device (virtblk) Disk /dev/vda: 21.5GB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: Number Start End Size Type File system Flags 1 1049kB 525MB 524MB primary xfs boot 2 525MB 21.5GB 20.9GB primary lvm This is NOT the case with my CentOS 5 and CentOS 6 VMs, which all have a "correct" device map, with a single (hda0) entry. Is the above behavior expected? If not, what should be the expe...

...tmpfs /dev/shm tmpfs defaults,nodev,. . . parted -l Model: ATA WDC WD1002FAEX-0 (scsi) Disk /dev/sda: 1000GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1094kB 525MB 524MB primary ext4 boot 2 525MB 500GB 500GB primary lvm Model: Linux device-maper (linear) (dm) Disk: /dev/mapper/vg_voinet01-lv_spool: 68.7GB Sector size (logical/physical): 512B/512B Partition Table: loop Number Start End Size Type...

...nux swap / Solaris /dev/sdb3 2074624 6268927 4194304 2G 83 Linux and parted: Model: Kingston SNA-DC/U (scsi) Disk /dev/sdb: 120GB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: Number Start End Size Type File system Flags 1 1049kB 525MB 524MB primary ext3 2 525MB 1062MB 537MB primary linux-swap(v1) 3 1062MB 3210MB 2147MB primary ext4 what dd params work? dd if=/dev/sdb of=os.img bs=1M count=3210 ? thanks