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- dd if=/dev/zero of=/dev/disk/by-id/lousy-vendor-123 bs=128k
- ddrescue --verbose --force --no-split /dev/zero /dev/disk/by-id/lousy-vendor-123
- # badblocks -v -b 4096 -t random -o badblocks.txt -w /dev/destroyme
- Checking for bad blocks in read-write mode
- From block 0 to 2097151
- Testing with random pattern: done
- Reading and comparing: done
- Pass completed, 52105 bad blocks found. (0/52105/0 errors)
- # head badblocks.txt
- 2097000
- 2097001
- 2097002
- 2097003
- 2097004
- # hexdump -C /dev/destroyme
- 00000000 be e9 2e a5 87 1d 9e 61 e5 3c 98 7e b6 96 c6 ed |.......a.<.~....|
- 00000010 2c fe db 06 bf 10 d0 c3 52 52 b8 a1 55 62 6c 13 |,.......RR..Ubl.|
- 00000020 4b 9a b8 d3 b7 57 34 9c 93 cc 1a 49 62 e0 36 8e |K....W4....Ib.6.|
- $ sudo hdparm -I /dev/sdX
- .
- # lots of other info here...
- .
- Security:
- Master password revision code = 65534
- supported
- not enabled
- not locked
- not frozen
- not expired: security count
- supported: enhanced erase
- 202min for SECURITY ERASE UNIT. 202min for ENHANCED SECURITY ERASE UNIT.
- $sudo hdparm --user-master u --security-set-pass p /dev/sdX
- security_password="p"
- $sudo hdparm --user-master u --security-erase p /dev/sdX
- security_password="p"
- /dev/sdX:
- Issuing SECURITY_ERASE command, password="p", user=user
- dd conv=notrunc
- dd conv=noerror
- dd iflag=fullblock oflag=direct conv=noerror,notrunc if=/dev/zero of=/dev/sda
- dd iflag=fullblock oflag=direct conv=noerror,notrunc if=/dev/urandom of=/dev/sdX
- ddrescue --verbose --force --nosplit /dev/urandom /dev/sdX
- dd if=/dev/sdX of=/dev/null conv=noerror
- dd if=/dev/zero of=/dev/sdX bs=128k
- badblocks -v -s -w -t random /dev/sdX
- badblocks -v -s -w -t random /dev/sdX
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