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A USB stick was earlier written with Arch Linux .iso installation media.
After creating a new partition table with
parted mklabel gpt, the device does still contain some iso9660 leftovers: PUBLISHER_ID, APPLICATION_ID, BOOT_SYSTEM_ID, USAGE, PTTYPE.
Regression:
- reboot, still the iso9660 properties
blkid -p /dev/sdb
/dev/sdb: PUBLISHER_ID="ARCH LINUX <HTTP://WWW.ARCHLINUX.ORG>" APPLICATION_ID="ARCH LINUX LIVE/RESCUE CD" UUID="2017-03-01-18-21-15-00" BOOT_SYSTEM_ID="EL TORITO SPECIFICATION" LABEL="ARCH_201703" TYPE="iso9660" USAGE="filesystem" PTUUID="20983c3d-15f4-4f72-9887-e46d3faa2739" PTTYPE="gpt"How to set or reset these iso9660 labels?
Or at least the LABEL property because that label is also shown in "/dev/disk/by-label/" for the device /dev/sdb (not the partition).
Last edited by probackup-nl (2017-12-24 09:48:14)
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How to set or reset these iso9660 labels?
# sgdisk --zap-all /dev/sdXJin, Jîyan, Azadî
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I'd prefer to use utilities from "core". Is there an other option then sgdisk?
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dd(1) the entire device, perhaps?
Jin, Jîyan, Azadî
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According to grep, this information is stored at sector 0:
# grep -a -b 'ARCH_201703' /dev/sdb
0:UEFI PART\GW"=< rOm?'9ݩX(s*K>;^TH?@RESCUE=rGy=iG}V$YI;e+:gRESCUE-DATACD001 ARCH_201703 %u' ARCH LINUX <HTTP://WWW.ARCHLINUX.ORG> PREPARED BY MKARCHISO ARCH LINUX LIVE/RESCUE CD 2017030118211500201703011821150000000000000000000000000000000000 CD001EL TORITO SPECIFICATION(CD00u'SPPX$AATFu'u)u'CEu'PX$AATFu'u)uu)ARCHPX$AATFu)u)u)NM arcuisolinuxru'LOADERPX$AATFu'u)u'NMX$AATFu'u)u'NM
loaderER
498567318:options archisobasedir=arch archisolabel=ARCH_201703
grep: memory exhaustedOffline
Oh, if
ddcould be commanded to overwrite/zero sector 0.
Which command
dd if=/dev/zero of=$/dev/sdb bs=512 count=1 conv=notruncdoesn't.
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Hmm, better use | hexdump -C to figure out the location of the iso9660 labelling location on disk. It is stored higher. Starting at x8000 (32768=64 blocks) and ending at x9AAF (39599, 39600=77 blocks), totalling 13 3 x 4 = 12 blocks:
grep -a 'ARCH_201703' /dev/sdb | hexdump -C
00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
000001c0 01 00 ee fe ff ff 01 00 00 00 ff bf 9c 03 00 00 |................|
000001d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
000001f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 aa |..............U.|
00000200 45 46 49 20 50 41 52 54 00 00 01 00 5c 00 00 00 |EFI PART....\...|
00000210 a5 ad cc bd 00 00 00 00 01 00 00 00 00 00 00 00 |................|
00000220 ff bf 9c 03 00 00 00 00 22 00 00 00 00 00 00 00 |........".......|
00000230 de bf 9c 03 00 00 00 00 65 e2 b2 82 2f 08 98 49 |........e.../..I|
00000240 89 eb d0 ff a9 be c7 11 02 00 00 00 00 00 00 00 |................|
00000250 80 00 00 00 80 00 00 00 25 99 5b 5d 00 00 00 00 |........%.[]....|
00000260 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00000400 28 73 2a c1 1f f8 d2 11 ba 4b 00 a0 c9 3e c9 3b |(s*......K...>.;|
00000410 f0 b4 a1 ab 59 0e 25 4a 9b 55 d3 99 a7 42 97 dd |....Y.%J.U...B..|
00000420 00 40 00 00 00 00 00 00 ff 7f 06 00 00 00 00 00 |.@..............|
00000430 00 00 00 00 00 00 00 00 52 00 45 00 53 00 43 00 |........R.E.S.C.|
00000440 55 00 45 00 00 00 00 00 00 00 00 00 00 00 00 00 |U.E.............|
00000450 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00000480 af 3d c6 0f 83 84 72 47 8e 79 3d 69 d8 47 7d e4 |.=....rG.y=i.G}.|
00000490 c8 24 d5 45 6a a0 54 4e 8e 93 54 a8 9e b5 09 1f |.$.Ej.TN..T.....|
000004a0 00 80 06 00 00 00 00 00 ff b7 9c 03 00 00 00 00 |................|
000004b0 00 00 00 00 00 00 00 00 52 00 45 00 53 00 43 00 |........R.E.S.C.|
000004c0 55 00 45 00 2d 00 44 00 41 00 54 00 41 00 00 00 |U.E.-.D.A.T.A...|
000004d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00008000 01 43 44 30 30 31 01 00 20 20 20 20 20 20 20 20 |.CD001.. |
00008010 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00008020 20 20 20 20 20 20 20 20 41 52 43 48 5f 32 30 31 | ARCH_201|
00008030 37 30 33 20 20 20 20 20 20 20 20 20 20 20 20 20 |703 |
00008040 20 20 20 20 20 20 20 20 00 00 00 00 00 00 00 00 | ........|
00008050 00 b8 03 00 00 03 b8 00 00 00 00 00 00 00 00 00 |................|
00008060 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00008070 00 00 00 00 00 00 00 00 01 00 00 01 01 00 00 01 |................|
00008080 00 08 08 00 b0 00 00 00 00 00 00 b0 25 00 00 00 |............%...|
00008090 00 00 00 00 00 00 00 26 00 00 00 00 22 00 13 00 |.......&...."...|
000080a0 00 00 00 00 00 13 00 08 00 00 00 00 08 00 75 03 |..............u.|
000080b0 01 12 14 27 00 02 00 00 01 00 00 01 01 00 20 20 |...'.......... |
000080c0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
*
00008130 20 20 20 20 20 20 20 20 20 20 20 20 20 20 41 52 | AR|
00008140 43 48 20 4c 49 4e 55 58 20 3c 48 54 54 50 3a 2f |CH LINUX <HTTP:/|
00008150 2f 57 57 57 2e 41 52 43 48 4c 49 4e 55 58 2e 4f |/WWW.ARCHLINUX.O|
00008160 52 47 3e 20 20 20 20 20 20 20 20 20 20 20 20 20 |RG> |
00008170 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
*
000081b0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 50 52 | PR|
000081c0 45 50 41 52 45 44 20 42 59 20 4d 4b 41 52 43 48 |EPARED BY MKARCH|
000081d0 49 53 4f 20 20 20 20 20 20 20 20 20 20 20 20 20 |ISO |
000081e0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
*
00008230 20 20 20 20 20 20 20 20 20 20 20 20 20 20 41 52 | AR|
00008240 43 48 20 4c 49 4e 55 58 20 4c 49 56 45 2f 52 45 |CH LINUX LIVE/RE|
00008250 53 43 55 45 20 43 44 20 20 20 20 20 20 20 20 20 |SCUE CD |
00008260 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
*
00008320 20 20 20 20 20 20 20 20 20 20 20 20 20 32 30 31 | 201|
00008330 37 30 33 30 31 31 38 32 31 31 35 30 30 00 32 30 |7030118211500.20|
00008340 31 37 30 33 30 31 31 38 32 31 31 35 30 30 00 30 |17030118211500.0|
00008350 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 00 |000000000000000.|
00008360 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 |0000000000000000|
00008370 00 01 00 20 20 20 20 20 20 20 20 20 20 20 20 20 |... |
00008380 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
*
00008570 20 20 20 00 00 00 00 00 00 00 00 00 00 00 00 00 | .............|
00008580 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00008800 00 43 44 30 30 31 01 45 4c 20 54 4f 52 49 54 4f |.CD001.EL TORITO|
00008810 20 53 50 45 43 49 46 49 43 41 54 49 4f 4e 00 00 | SPECIFICATION..|
00008820 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00008840 00 00 00 00 00 00 00 28 00 00 00 00 00 00 00 00 |.......(........|
00008850 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00009000 ff 43 44 30 30 31 01 00 00 00 00 00 00 00 00 00 |.CD001..........|
00009010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00009800 84 00 13 00 00 00 00 00 00 13 00 08 00 00 00 00 |................|
00009810 08 00 75 03 01 12 14 27 00 02 00 00 01 00 00 01 |..u....'........|
00009820 01 00 53 50 07 01 be ef 00 50 58 24 01 ed 41 00 |..SP.....PX$..A.|
00009830 00 00 00 41 ed 01 00 00 00 00 00 00 01 00 00 00 |...A............|
00009840 00 00 00 00 00 00 00 00 00 00 00 00 00 54 46 1a |.............TF.|
00009850 01 0e 75 03 01 12 14 27 00 75 03 01 12 14 29 00 |..u....'.u....).|
00009860 75 03 01 12 14 27 00 43 45 1c 01 14 00 00 00 00 |u....'.CE.......|
00009870 00 00 14 00 00 00 00 00 00 00 00 ed 00 00 00 00 |................|
00009880 00 00 ed 00 60 00 13 00 00 00 00 00 00 13 00 08 |....`...........|
00009890 00 00 00 00 08 00 75 03 01 12 14 27 00 02 00 00 |......u....'....|
000098a0 01 00 00 01 01 01 50 58 24 01 ed 41 00 00 00 00 |......PX$..A....|
000098b0 41 ed 01 00 00 00 00 00 00 01 00 00 00 00 00 00 |A...............|
000098c0 00 00 00 00 00 00 00 00 00 00 54 46 1a 01 0e 75 |..........TF...u|
000098d0 03 01 12 14 27 00 75 03 01 12 14 29 00 75 03 01 |....'.u....).u..|
000098e0 12 14 27 00 6e 00 15 00 00 00 00 00 00 15 00 08 |..'.n...........|
000098f0 00 00 00 00 08 00 75 03 01 12 14 29 00 02 00 00 |......u....)....|
00009900 01 00 00 01 04 41 52 43 48 00 50 58 24 01 ed 41 |.....ARCH.PX$..A|
00009910 00 00 00 00 41 ed 01 00 00 00 00 00 00 01 00 00 |....A...........|
00009920 00 00 00 00 00 00 00 00 00 00 00 00 00 00 54 46 |..............TF|
00009930 1a 01 0e 75 03 01 12 14 29 00 75 03 01 12 14 29 |...u....).u....)|
00009940 00 75 03 01 12 14 29 00 4e 4d 09 01 00 61 72 63 |.u....).NM...arc|
00009950 68 00 6a 00 1f 00 00 00 00 00 00 1f 00 08 00 00 |h.j.............|
00009960 00 00 08 00 75 03 01 12 14 28 00 02 00 00 01 00 |....u....(......|
00009970 00 01 03 45 46 49 50 58 24 01 ed 41 00 00 00 00 |...EFIPX$..A....|
00009980 41 ed 01 00 00 00 00 00 00 01 00 00 00 00 00 00 |A...............|
00009990 00 00 00 00 00 00 00 00 00 00 54 46 1a 01 0e 75 |..........TF...u|
000099a0 03 01 12 14 28 00 75 03 01 12 14 29 00 75 03 01 |....(.u....).u..|
000099b0 12 14 28 00 4e 4d 08 01 00 45 46 49 76 00 22 00 |..(.NM...EFIv.".|
000099c0 00 00 00 00 00 22 00 08 00 00 00 00 08 00 75 03 |....."........u.|
000099d0 01 12 14 27 00 02 00 00 01 00 00 01 08 49 53 4f |...'.........ISO|
000099e0 4c 49 4e 55 58 00 50 58 24 01 ed 41 00 00 00 00 |LINUX.PX$..A....|
000099f0 41 ed 01 00 00 00 00 00 00 01 00 00 00 00 00 00 |A...............|
00009a00 00 00 00 00 00 00 00 00 00 00 54 46 1a 01 0e 75 |..........TF...u|
00009a10 03 01 12 14 27 00 75 03 01 12 14 29 00 75 03 01 |....'.u....).u..|
00009a20 12 14 27 00 4e 4d 0d 01 00 69 73 6f 6c 69 6e 75 |..'.NM...isolinu|
00009a30 78 00 72 00 23 00 00 00 00 00 00 23 00 08 00 00 |x.r.#......#....|
00009a40 00 00 08 00 75 03 01 12 14 27 00 02 00 00 01 00 |....u....'......|
00009a50 00 01 06 4c 4f 41 44 45 52 00 50 58 24 01 ed 41 |...LOADER.PX$..A|
00009a60 00 00 00 00 41 ed 01 00 00 00 00 00 00 01 00 00 |....A...........|
00009a70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 54 46 |..............TF|
00009a80 1a 01 0e 75 03 01 12 14 27 00 75 03 01 12 14 29 |...u....'.u....)|
00009a90 00 75 03 01 12 14 27 00 4e 4d 0b 01 00 6c 6f 61 |.u....'.NM...loa|
00009aa0 64 65 72 00 00 00 00 00 00 00 00 00 00 00 00 00 |der.............|
00009ab0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|Last edited by probackup-nl (2017-11-29 17:01:25)
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