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[SS] Bootleg II data side of the disc
Posted: Sat May 25, 2019 1:02 pm
by Madroms
As you can see in the pictures attached, this disc has some weird reflection on the data side, like there are 2 gaps/rings in the middle of the data.
This is this disc:
https://redump.info/disc/14130/
any idea ? Gap with no data ? data with different reflection ?
I am not an expert, and I just want to know
Re: [SS] Bootleg II data side of the disc
Posted: Sat May 25, 2019 3:20 pm
by F1ReB4LL
Another ring type on US discs
You can try to read that area with IsoBuster or CD Tool.
Re: [SS] Bootleg II data side of the disc
Posted: Sun May 26, 2019 3:32 am
by Madroms
I don't think it is the same type of ring. On yours, it is clearly a weird ring in the non-data part of the disc.
On the bootleg II (total size of data = 619716720), it is inside the data part of the disc (or this is how I see them): data part, then tiny gap, then tiny data part, then tiny gap, then the end of the data. And after, there is the non-data part before the Sega ring.
Better explanation on the picture attached.
Re: [SS] Bootleg II data side of the disc
Posted: Sun May 26, 2019 6:04 am
by iR0b0t
Code: Select all
3 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
4 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
5 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
6 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
7 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
8 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
9 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
10 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
11 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
Code: Select all
16 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
17 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
18 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
19 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
20 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
21 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
22 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
23 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
24 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
25 1058400 30467379 12eb1c39b4b4ef3853da8f42b042dabb 454018fbe7e5f75d0c3a7a24ec21f972edf9add8
I think its a holographical effect due to those tracks having some specific byte pattern.
Re: [SS] Bootleg II data side of the disc
Posted: Sun May 26, 2019 6:49 am
by F1ReB4LL
iR0b0t wrote:I think its a holographical effect due to those tracks having some specific byte pattern.
Something similar to "hidden" Audio CD tracks, it seems. I don't have the image atm, but I believe these tracks are empty.
Re: [SS] Bootleg II data side of the disc
Posted: Sun May 26, 2019 11:01 am
by wiggy2k
Logs from mine: (Sega Screams Vol 1)
those tracks are indeed empty.
https://mega.nz/#!exEmHARI!_Aoi1EfFFhpC … wycNU6E304
Re: [SS] Bootleg II data side of the disc
Posted: Sun May 26, 2019 12:53 pm
by Madroms
iR0b0t wrote:I think its a holographical effect due to those tracks having some specific byte pattern.
It makes sense, but i never thought it could be seen like that on the cd.
Re: [SS] Bootleg II data side of the disc
Posted: Mon May 27, 2019 2:02 am
by F1ReB4LL
Madroms wrote:iR0b0t wrote:I think its a holographical effect due to those tracks having some specific byte pattern.
It makes sense, but i never thought it could be seen like that on the cd.
I'd like to remind you the entire outer protection ring can be burned with fully readable SEGA text without any tricks
The text is formed by the data patterns on the sector level, you can even open the ring dump in the notepad and align the data properly to see the same text.
Re: [SS] Bootleg II data side of the disc
Posted: Tue May 28, 2019 2:56 pm
by Madroms
F1ReB4LL wrote:I'd like to remind you the entire outer protection ring can be burned with fully readable SEGA text without any tricks
The text is formed by the data patterns on the sector level, you can even open the ring dump in the notepad and align the data properly to see the same text.
This is something I could easily forgot
Re: [SS] Bootleg II data side of the disc
Posted: Tue May 28, 2019 3:37 pm
by F1ReB4LL
Btw, if you like various data patterns, take a look at Applesauce Apple II disk dumps -
https://wiki.reactivemicro.com/Applesau … e_Software