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
For Lenovo ideapad 5 15IIL05 15ARE05 15ITL05 15ALC05 Lcd Back Cover Rear Lid NEW
$49.98
NEW Palmrest Keyboard For Lenovo Thinkpad E15 Gen 2 20T8 20T9 Black 5M10W64513
$80.99
For Lenovo ideapad Flex 5 15IIL05 15ITL05 LCD Touch Screen Bezel 5D10S39643 New
$138.95
Lenovo 500w Gen 3 Laptop, 11.6" IPS Glass, N6000, 8GB, 128GB SSD, Win 11 Home
$186.99
Lenovo Ideapad 1i 15.6" FHD Notebook Intel Core i5-1235U 8GB RAM 256GB SSD
$339.99
Lenovo IP 5 16IAU7 16" 2.5K Chromebook i3-1215U 8GB Ram 128GB eMMC Chrome OS
$189.99
Lenovo Notebook IdeaPad 1 Laptop, N6000, 4GB, 128GB eMMC, Win 11 Home-Certified
$229.49
Lenovo Loq 15Irh8 15" Laptop Core i5-13420H GeForce RTX 2050 16GB 512GB SSD W11H
$499.99
~10th Gen~ 14" Lenovo i7 Quad Core Laptop: 16GB RAM 512GB SSD Windows 11 Pro
$359.99
Lenovo K14 AMD Laptop, 14" FHD IPS LED , Ryzen 5 5600U, 16GB, 256GB SSD
$569.00