You'll need to close the image after writing. On a 700Mb CDR you aren't going to have a whole lot left anyway so no point keepng open.
I have burned the knoppix image with nero, nero warned me that unless i closed the cd after burning(msg.' let nero close the cd after burning) there wouldnt be enough space on the cd-rom.
I pressed no, because i thought that cd wouldn't be accessible anymore when i do this.
Is that how its done or do i need to close the cd after burning.
Nero burned the image anyway.
P.s I used a 700 mb cd-recordable.
You'll need to close the image after writing. On a 700Mb CDR you aren't going to have a whole lot left anyway so no point keepng open.

Intel Core i7-3770K 3.5 GHz Processor
$39.00
AMD Ryzen 7 9800X3D - Ryzen 7 9000 Series Zen 5 8-Core 4.7 GHz - Socket AM5
$375.00
INTEL CORE I9-10940X X-SERIES PROCESSOR | 3.30GHZ | SRGSH
$179.99
Intel Core i7-9700 3.0 GHz Octo-Core (SRG13) Processor
$79.00
Intel Xeon E3-1230 v3 SR153 3.3GHz Quad Core LGA 1150 CPU Processor
$14.49
$295.00
AMD Ryzen 5 PRO 4650GE 3.3GHz 6-Core 12-Thread AM4 Desktop CPU Processor Tested
$54.50
Intel Core i7-9700 SRG13 3.0 GHz Desktop CPU
$80.00
PS5 Over Heating Problem Solver 1.5 Grams Liquid metal thermal paste CPU, GPU
$15.99
Intel 6th Gen Core i7-6700K 4.0GHz (Turbo 4.2GHz) 4-Core LGA1151 CPU SR2L0
$38.00