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
Macintosh Platinum Mouse - Apple 128K 512K 512Ke Mac Plus Lisa IIe M0100 - NEW
$44.99
1984 APPLE MACINTOSH 128K 40th Anniversary MATCHING # BOX Set 1st Mac M0001 NICE
$7999.99
Apple Macintosh 128k 512k Plus Analog Board Capacitor Re-Cap Kit - US Shipping
$23.95
Apple Macintosh 128K M0001 Computer 1984 W/Mouse, Keyboard, Bag & Disks AS IS
$699.00
Vintage Apple lle 128k Enhanced Computer A2S2064 Rebuilt W/ Disk Drive & more
$359.99
1984 APPLE MACINTOSH Model M0001 1st MAC 128K 40th Anniversary PICASSO KIT NICE
$4999.99
Apple Macintosh M0001 128K computer & M0110 keyboard/mouse, for parts/repair
$300.00
Working 1984 Apple Mac Macintosh 128K M0001 - Restored/Serviced/Tested
$1390.06
Apple M0110A Keyboard for Macintosh 128k 512k Plus - FULLY TESTED
$124.99
Apple Macintosh 128K Parts Kit - P/N 073-0140-A
$273.60