David Christensen composed on 2017-03-08 21:46 (UTC-0800):
...
Examining a Jesse system drive, the first partition starts at block 2048
(1 MB = 2**20 bytes):
2017-03-08 21:30:04 root@jesse ~
# parted /dev/sda u s p
Model: ATA SAMSUNG SSD UM41 (scsi)
Disk /dev/sda: 31277232s
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 2048s 976895s 974848s primary ext4 boot
2 976896s 1953791s 976896s primary
3 1953792s 28125183s 26171392s primary
There is content in the first 101 blocks (1 MBR plus 100 other):
2017-03-08 21:30:06 root@jesse ~
# dd if=/dev/sda count=2048 2>/dev/null | hexdump -C | tail
...
What is in blocks 1-101?
Was that disk ever used for anything besides Jessie, not new or wiped first?
Run strings on it or view in a sector editor and you'll probably see grub
somewhere, if it's a typical Linux installation that puts Grub in the MBR
instead of on a primary partition with its boot flag set, along with generic
code in the MBR.
Occasionally some of those sectors are used for RAID.
--
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
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