Dear All -
If I use the command fdisk -l I get the usual and expected output of the style
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 131604479 131602432 62.8G 7 HPFS/NTFS/exFAT
/dev/sda2 131604480 1180327679 1048723200 500.1G 7 HPFS/NTFS/exFAT
/dev/sda3 1180327680 2229050879 1048723200 500.1G 7 HPFS/NTFS/exFAT
My question concerns the line
/dev/sda1 * 2048 131604479 131602432 62.8G 7 HPFS/NTFS/exFAT
Surely that means that /dev/sda1 starts at sector number 2048 and that there are 2,048 sectors at the start of /dev/sda (yes, numbered 0000-2047) allocated otherwise?
For various reasons I want to zero these initial sectors of /dev/sda using the command
dd if=/dev/zero of=/dev/sda count=2048
but to my annoyance (and very considerable damage to the system) this also zeroes the first sector of /dev/sda1.
That is, the dd command zeroes not just those sectors numbered 0000-2047 but also the sector numbered 2048: so 2049 altogether. not 2048.
I am absolutely convinced that my understanding of counts / numbers / numbering as described above was correct under 7.4.2 and that I issued commands, many times, in the manner describe without damaging /dev/sda1; (but I am a bit nervous now about checking that)!
Can anybody conform that I am right? That I am wrong? That dd under 8.2.0 is glitchy?
Thank you!
Fergus
PS And by the way (completely different and unconnected) I find the file /boot/isolinux/ifcpu64.c32 is broken in the 8.2.0 installation and I have to over-write it with the same file from 7.4.2 for things to work properly. Anybody else?
Fergus
Intel NUC Core i7 8th Gen - Mini PC Kit BOXNUC8I7BEH1
$300.00
INTEL NUC8I3BEH NUC Core i3-8109U 8GB 120GB m.2 SSD, Win11 NO AC ADAPTER #95
$79.99
ALLEGIANCE Desktop Computer Gaming PC: Intel 8 Core 128GB RAM, 2TB SSD, GeForce
$687.99
Intel - Core i9-13900K 13th Gen 24 cores 8 P-cores + 16 E-cores 36M Cache, 3 ...
$689.99
Intel - Core i7-13700K 13th Gen 16 cores 8 P-cores + 8 E-cores 30M Cache, 3.4...
$489.99
Intel Core i7-8700 3.2 GHz 8 GT/s LGA 1151 Desktop CPU Processor SR3QS
$88.99
Intel - Core i9-12900K Desktop Processor 16 (8P+8E) Cores up to 5.2 GHz Unloc...
$619.99
Dell Precision 3630 8-Core i9-9900K 3.6GHz 64GB 1TB SSD WIN 11P
$599.99
Dell Desktop Computer 16GB RAM 512GB SSD Intel Core i5 8th Gen. Windows 11 Pro
$275.60
Custom Gaming PC i7 Quad Core 16GB 2TB SSD NVidia RTX 2060 8GB GPU
$579.99