qemu-system-i386: -localtime: invalid optionが出て起動できない

[hangingman]

ref https://www.qemu.org/docs/master/about/removed-features.html#localtime-removed-in-3-1

qemu 3.1でオプションが無くなった

-localtime (removed in 3.1)

Replaced by -rtc base=localtime.

https://www.qemu.org/docs/master/system/qemu-manpage.html

Specify base as utc or localtime to let the RTC start at the current UTC or local time, 
respectively. localtime is required for correct date in MS-DOS or Windows. 
To start at a specific point in time, provide datetime in the format 2006-06-17T16:01:21 or 2006-06-17. The default base is UTC.

MS-DOSで必要な機能だったようだ