Byla vydána nová verze 2025.4 linuxové distribuce navržené pro digitální forenzní analýzu a penetrační testování Kali Linux (Wikipedie). Přehled novinek se seznamem nových nástrojů v oficiálním oznámení na blogu.
Národní úřad pro kybernetickou a informační bezpečnost (NÚKIB) zveřejnil Národní politiku koordinovaného zveřejňování zranitelností (pdf), jejímž cílem je nejen zvyšování bezpečnosti produktů informačních a komunikačních technologií (ICT), ale také ochrana objevitelů zranitelností před negativními právními dopady. Součástí je rovněž vytvoření „koordinátora pro účely CVD“, jímž je podle nového zákona o kybernetické … více »
Vývojáři KDE oznámili vydání balíku aplikací KDE Gear 25.12. Přehled novinek i s náhledy a videi v oficiálním oznámení.
Společnost System76 vydala Pop!_OS 24.04 LTS s desktopovým prostředím COSMIC. Videoukázky na YouTube.
Byla vydána verze 1.92.0 programovacího jazyka Rust (Wikipedie). Podrobnosti v poznámkách k vydání. Vyzkoušet Rust lze například na stránce Rust by Example.
Free Software Foundation zveřejnila ocenění Free Software Awards za rok 2024. Oceněni byli Andy Wingo, jeden ze správců GNU Guile, Alx Sa za příspěvky do Gimpu a Govdirectory jako společensky prospěšný projekt.
Bylo vydáno Eclipse IDE 2025-12 aneb Eclipse 4.38. Představení novinek tohoto integrovaného vývojového prostředí také na YouTube.
U příležitosti oslav osmi let prací na debianím balíčku vyšlo GPXSee 15.6. Nová verze přináší především podporu pro geotagované MP4 soubory, včetně GoPro videí. Kdo nechce čekat, až nová verze dorazí do jeho distribuce, nalezne zdrojové kódy na GitHubu.
Monado, tj. multiplatformní open source implementace standardu OpenXR specifikujícího přístup k platformám a zařízením pro XR, tj. platformám a zařízením pro virtuální realitu (VR) a rozšířenou realitu (AR), bylo vydáno ve verzi 25.1.0. Přehled novinek v poznámkách k vydání.
Byla vydána listopadová aktualizace aneb nová verze 1.107 editoru zdrojových kódů Visual Studio Code (Wikipedie). Přehled novinek i s náhledy a videi v poznámkách k vydání. Ve verzi 1.107 vyjde také VSCodium, tj. komunitní sestavení Visual Studia Code bez telemetrie a licenčních podmínek Microsoftu.
A nejde to treba resit zavolanim nejaky funkce HALu a udisku, aby ignorovaly to jednotku DVD?Něco jako killall hald?
mount, když nezadáš -t, hádá typ FS právě pomocí blkid.
EVALUATE, vyzerá to zajímavě, cituji:
The "udev" method uses udev /dev/disk/by-* symlinks and the "scan" method scans all block devices from the /proc/partitions file.
char *blkid_devno_to_devname(dev_t devno)
{
struct dir_list *list = NULL, *new_list = NULL;
char *devname = NULL;
const char **dir;
/*
* Add the starting directories to search in reverse order of
* importance, since we are using a stack...
*/
for (dir = devdirs; *dir; dir++)
add_to_dirlist(*dir, NULL, &list);
while (list) {
struct dir_list *current = list;
list = list->next;
DBG(DEBUG_DEVNO, printf("directory %s\n", current->name));
blkid__scan_dir(current->name, devno, &new_list, &devname);
free(current->name);
free(current);
if (devname)
break;
/*
* If we're done checking at this level, descend to
* the next level of subdirectories. (breadth-first)
*/
if (list == NULL) {
list = new_list;
new_list = NULL;
}
}
free_dirlist(&list);
free_dirlist(&new_list);
if (!devname) {
DBG(DEBUG_DEVNO,
printf("blkid: couldn't find devno 0x%04lx\n",
(unsigned long) devno));
} else {
DBG(DEBUG_DEVNO,
printf("found devno 0x%04llx as %s\n", (long long)devno, devname));
}
return devname;
}
Hledání souboru zařízení skenováním předdefinovaných adresářů a na každý nalezený soubor volat fstat(), aby ho našel, to se na mě nezlobte, ale je to prasárna. Ono to totiž zatím "nějak" funguje, tak to nikoho netrápí.if (S_ISBLK(sb.st_mode) && ioctl(fd, CDROM_GET_CAPABILITY, NULL) >= 0) pr->flags |= BLKID_CDROM_DEV;To jako, že character device nemůže být CD-ROM? Např /dev/sg1 u mě je character device a CD-ROM to teda je. Ale pravda, že udisks testuje jen blokové zařízení.
Blkid je část e2fsprogs a je to poměrně klíčová součást systému.Niektoré distribúcie používajú verziu knižnice, ktoré je v util-linux-ng.
....
nějaký věcičky k zavádění procesu do paměti a tak
....
23:56:09 open("/dev/sr0", O_RDONLY) = 3
23:56:09 fadvise64(3, 0, 0, POSIX_FADV_RANDOM) = 0
23:56:09 fstat(3, {st_mode=S_IFBLK|0660, st_rdev=makedev(11, 0), ...}) = 0
23:56:09 uname({sys="Linux", node="Jardik-PC", ...}) = 0
23:56:09 ioctl(3, BLKGETSIZE64, 0xe11020) = 0
23:56:09 fstat(3, {st_mode=S_IFBLK|0660, st_rdev=makedev(11, 0), ...}) = 0
23:56:09 lseek(3, 0, SEEK_SET) = 0
23:56:09 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:56:27 lseek(3, 0, SEEK_SET) = 0
23:56:27 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:56:35 lseek(3, 0, SEEK_SET) = 0
23:56:35 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:56:44 lseek(3, 0, SEEK_SET) = 0
23:56:44 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:56:53 ioctl(3, BLKSSZGET, 0xe11030) = 0
23:56:53 lseek(3, 0, SEEK_SET) = 0
23:56:53 read(3, 0xe11808, 512) = -1 EIO (Input/output error)
23:57:02 lseek(3, 0, SEEK_SET) = 0
23:57:02 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:57:11 lseek(3, 0, SEEK_SET) = 0
23:57:11 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:57:20 lseek(3, 0, SEEK_SET) = 0
23:57:20 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:57:29 lseek(3, 0, SEEK_SET) = 0
23:57:29 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:57:38 lseek(3, 28672, SEEK_SET) = 28672
23:57:38 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:57:47 lseek(3, 0, SEEK_SET) = 0
23:57:47 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:57:56 lseek(3, 0, SEEK_SET) = 0
23:57:56 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:58:05 lseek(3, 0, SEEK_SET) = 0
23:58:05 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:58:14 lseek(3, 0, SEEK_SET) = 0
23:58:14 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:58:22 lseek(3, 0, SEEK_SET) = 0
23:58:22 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:58:31 lseek(3, 0, SEEK_SET) = 0
23:58:31 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:58:40 lseek(3, 0, SEEK_SET) = 0
23:58:40 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:58:49 lseek(3, 0, SEEK_SET) = 0
23:58:49 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:58:58 lseek(3, 0, SEEK_SET) = 0
23:58:58 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:59:07 lseek(3, 0, SEEK_SET) = 0
23:59:07 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:59:16 lseek(3, 0, SEEK_SET) = 0
23:59:16 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:59:25 lseek(3, 0, SEEK_SET) = 0
23:59:25 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:59:34 lseek(3, 3072, SEEK_SET) = 3072
23:59:34 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:59:43 lseek(3, 3072, SEEK_SET) = 3072
23:59:43 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
23:59:52 lseek(3, 3072, SEEK_SET) = 3072
23:59:52 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:00:00 lseek(3, 3072, SEEK_SET) = 3072
00:00:00 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:00:09 lseek(3, 7168, SEEK_SET) = 7168
00:00:09 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:00:18 lseek(3, 7168, SEEK_SET) = 7168
00:00:18 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:00:27 lseek(3, 7168, SEEK_SET) = 7168
00:00:27 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:00:36 lseek(3, 7168, SEEK_SET) = 7168
00:00:36 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:00:45 lseek(3, 15360, SEEK_SET) = 15360
00:00:45 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:00:54 lseek(3, 15360, SEEK_SET) = 15360
00:00:54 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:01:03 lseek(3, 15360, SEEK_SET) = 15360
00:01:03 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:01:12 lseek(3, 15360, SEEK_SET) = 15360
00:01:12 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:01:21 lseek(3, 31744, SEEK_SET) = 31744
00:01:21 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:01:30 lseek(3, 31744, SEEK_SET) = 31744
00:01:30 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:01:38 lseek(3, 31744, SEEK_SET) = 31744
00:01:38 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:01:47 lseek(3, 31744, SEEK_SET) = 31744
00:01:47 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:01:56 lseek(3, 64512, SEEK_SET) = 64512
00:01:56 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:02:05 lseek(3, 64512, SEEK_SET) = 64512
00:02:05 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:02:14 lseek(3, 64512, SEEK_SET) = 64512
00:02:14 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:02:23 lseek(3, 64512, SEEK_SET) = 64512
00:02:23 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:02:32 lseek(3, 3072, SEEK_SET) = 3072
00:02:32 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:02:41 lseek(3, 3072, SEEK_SET) = 3072
00:02:41 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:02:50 lseek(3, 7168, SEEK_SET) = 7168
00:02:50 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:02:59 lseek(3, 7168, SEEK_SET) = 7168
00:02:59 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:03:08 lseek(3, 15360, SEEK_SET) = 15360
00:03:08 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:03:17 lseek(3, 15360, SEEK_SET) = 15360
00:03:17 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:03:25 lseek(3, 31744, SEEK_SET) = 31744
00:03:25 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:03:34 lseek(3, 31744, SEEK_SET) = 31744
00:03:34 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:03:43 lseek(3, 64512, SEEK_SET) = 64512
00:03:43 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:03:52 lseek(3, 64512, SEEK_SET) = 64512
00:03:52 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:04:01 lseek(3, 0, SEEK_SET) = 0
00:04:01 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:04:10 lseek(3, 1024, SEEK_SET) = 1024
00:04:10 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:04:19 lseek(3, 1024, SEEK_SET) = 1024
00:04:19 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:04:28 lseek(3, 1024, SEEK_SET) = 1024
00:04:28 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:04:37 lseek(3, 1024, SEEK_SET) = 1024
00:04:37 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:04:46 lseek(3, 1024, SEEK_SET) = 1024
00:04:46 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:04:55 lseek(3, 8192, SEEK_SET) = 8192
00:04:55 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:05:04 lseek(3, 65536, SEEK_SET) = 65536
00:05:04 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:05:12 lseek(3, 65536, SEEK_SET) = 65536
00:05:12 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:05:20 lseek(3, 65536, SEEK_SET) = 65536
00:05:20 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:05:28 lseek(3, 8192, SEEK_SET) = 8192
00:05:28 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:05:37 lseek(3, 65536, SEEK_SET) = 65536
00:05:37 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:05:46 lseek(3, 32768, SEEK_SET) = 32768
00:05:46 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:05:54 lseek(3, 32768, SEEK_SET) = 32768
00:05:54 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:06:03 lseek(3, 32768, SEEK_SET) = 32768
00:06:03 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:06:12 lseek(3, 32768, SEEK_SET) = 32768
00:06:12 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:06:21 lseek(3, 32768, SEEK_SET) = 32768
00:06:21 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:06:30 lseek(3, 32768, SEEK_SET) = 32768
00:06:30 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:06:39 lseek(3, 32768, SEEK_SET) = 32768
00:06:39 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:06:48 lseek(3, 32768, SEEK_SET) = 32768
00:06:48 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:06:57 lseek(3, 32768, SEEK_SET) = 32768
00:06:57 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:07:06 lseek(3, 32768, SEEK_SET) = 32768
00:07:06 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:07:15 lseek(3, 131072, SEEK_SET) = 131072
00:07:15 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:07:23 lseek(3, 131072, SEEK_SET) = 131072
00:07:23 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:07:31 lseek(3, 135168, SEEK_SET) = 135168
00:07:31 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:07:39 lseek(3, 135168, SEEK_SET) = 135168
00:07:39 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:07:48 lseek(3, 139264, SEEK_SET) = 139264
00:07:48 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:07:56 lseek(3, 139264, SEEK_SET) = 139264
00:07:56 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:08:04 lseek(3, 393216, SEEK_SET) = 393216
00:08:04 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:08:12 lseek(3, 393216, SEEK_SET) = 393216
00:08:12 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:08:21 lseek(3, 397312, SEEK_SET) = 397312
00:08:21 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:08:29 lseek(3, 397312, SEEK_SET) = 397312
00:08:29 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:08:37 lseek(3, 401408, SEEK_SET) = 401408
00:08:37 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:08:46 lseek(3, 401408, SEEK_SET) = 401408
00:08:46 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:08:54 lseek(3, 1024, SEEK_SET) = 1024
00:08:54 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:09:03 lseek(3, 1024, SEEK_SET) = 1024
00:09:03 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:09:12 lseek(3, 1024, SEEK_SET) = 1024
00:09:12 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:09:21 lseek(3, 1024, SEEK_SET) = 1024
00:09:21 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:09:30 lseek(3, 0, SEEK_SET) = 0
00:09:30 read(3, 0xe11808, 1377) = -1 EIO (Input/output error)
00:09:39 lseek(3, 8192, SEEK_SET) = 8192
00:09:39 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:09:48 lseek(3, 512, SEEK_SET) = 512
00:09:48 read(3, 0xe11808, 512) = -1 EIO (Input/output error)
00:09:56 lseek(3, 2048, SEEK_SET) = 2048
00:09:56 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:10:05 lseek(3, 2048, SEEK_SET) = 2048
00:10:05 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:10:14 lseek(3, 0, SEEK_SET) = 0
00:10:14 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:10:23 lseek(3, 0, SEEK_SET) = 0
00:10:23 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:10:32 lseek(3, 0, SEEK_SET) = 0
00:10:32 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:10:41 lseek(3, 0, SEEK_SET) = 0
00:10:41 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:10:50 lseek(3, 1024, SEEK_SET) = 1024
00:10:50 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:10:59 lseek(3, 1024, SEEK_SET) = 1024
00:10:59 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:11:08 lseek(3, 1024, SEEK_SET) = 1024
00:11:08 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:11:17 lseek(3, 1024, SEEK_SET) = 1024
00:11:17 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:11:26 lseek(3, 1024, SEEK_SET) = 1024
00:11:26 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:11:34 lseek(3, 65536, SEEK_SET) = 65536
00:11:34 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:11:43 lseek(3, 65536, SEEK_SET) = 65536
00:11:43 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:11:51 lseek(3, 8192, SEEK_SET) = 8192
00:11:51 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:12:00 lseek(3, 1024, SEEK_SET) = 1024
00:12:00 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:12:09 lseek(3, 2048, SEEK_SET) = 2048
00:12:09 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:12:18 lseek(3, 4096, SEEK_SET) = 4096
00:12:18 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:12:27 lseek(3, 8192, SEEK_SET) = 8192
00:12:27 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:12:36 lseek(3, 0, SEEK_SET) = 0
00:12:36 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:12:45 lseek(3, 1024, SEEK_SET) = 1024
00:12:45 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:12:54 lseek(3, 0, SEEK_SET) = 0
00:12:54 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:13:03 lseek(3, 0, SEEK_SET) = 0
00:13:03 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:13:11 lseek(3, 0, SEEK_SET) = 0
00:13:11 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:13:20 lseek(3, 0, SEEK_SET) = 0
00:13:20 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:13:29 lseek(3, 4096, SEEK_SET) = 4096
00:13:29 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:13:38 lseek(3, 65536, SEEK_SET) = 65536
00:13:38 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:13:46 lseek(3, 0, SEEK_SET) = 0
00:13:46 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:13:55 lseek(3, 0, SEEK_SET) = 0
00:13:55 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:14:04 lseek(3, 2097152, SEEK_SET) = 2097152
00:14:04 read(3, 0xe11808, 1024) = -1 EIO (Input/output error)
00:14:13 close(3) = 0
00:14:13 exit_group(2) = ?
Pro každej typ FS, co to zná to v podstatě hledá, jestli tam je superblok a pod. Jenže vždy čtení selže. Otázkou je proč. Schválně jsem si napsal testovací prográmek, kterej čte bloky o velikostech 512B - 32k. U CD/DVD/BD je správná velikost bloku 2k, jenže tam je taky chyba. I u 32k (velikost ECC bloku) je chyba. MMC standard nám říká:
When recorded, DVD+RW medium is ECC block readable. An intelligent controller may separate individual sector data from a decoded ECC block. Thus for the Host, DVD+RW media is 2 048 byte sector readable.
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